Develop Bugs

[Q] Had low memory after apps update, will not boot now - MIUI-XJ

Hey guys, got a strange problem here. I'm running MIUI-XJ 2.3.30 A2SD.
Had 8 apps to update via Google Play and 31mb internal left (over 600mb on sd-ext, too). In the middle of updating the apps I've got a Google Play crash followed by few other fc's, phone said my internal memory is too low to operate and such - so I tried the most obvious fix, which is of course rebooting the phone.
That was a mistake, apparently. Phone will not boot anymore - goes through the bootscreen and gets stuck on the yellow MIUI splash. It's not a bootloop, the phone just freezes and the only thing I can do is battery removal. Tried booting it up with no sd card as well, nothing seems to help though.
Is there anything I can do except full wipe via recovery? I had some important sms and spent quite a bit of time customizing the desktop, I'm not to keen on doing that again.
Is it possible to delete some apps via adb or something like that? Or is there a point in trying to install the rom again on top of my system?
Thanks in advance, help really appreciated!

Try clearing dalvik cache and cache from recovery and then boot. Thereafter clear some space or change your a2sd scheme.

Thanks for the answer! Makes me feel silly I did not think of that myself lol, sounds like an obvious solution.
Problem is, it still does not seem to help though - wiped /cache and dalvik-cache on data, sd-ext and system - still nothing, same problem persists. Stuck at MIUI bootanimation.
Any other ideas? I'm really kind of desperate to recover the data.

- Take a nandroid backup first. So you can start over if need be.
Some things to try
- Only flash ROM and see if it helps.
- Wipe data. Flash ROM fresh. Install Titanium Backup. With TB locate nandroid on sdcard and try to extract your data. Maybe restoring the launcher and messaging will do the trick. Not sure . Try. You can always start over.
- Fix permissions in recovery

There's an app called AROMA Filemanager that can be started from recovery and allows you to modify all phone partitions, all you need is to mount them before starting the app. Here it is:
http://forum.xda-developers.com/showthread.php?p=25911276

Tried flashing the ROM again on top of my system - no effect whatsoever, still gets stuck at bootanimation. Also, tried the permission fix as well as the RMD recovery "apk uid mismatches" fix. Still nothing.
Going to give the AROMA a try, having some problems right now though - using RMD recovery, no touch support. Trying to flash 4ext touch from fastboot somehow!
Thank you. Will keep you updated.
UPDATE//
Managed to get the AROMA up and running, deleted few apps from /data/apps, nothing to delete from /system really. /cache is cleared, so are all 3 dalvik-cache folders.
System still does not want to start.
Any ideas what might have happened? Seems like I'm running out of options and will have to do a clear install, after all.

You probably damaged some important system files so tho phone can't load system. The best solution is to restore some nand backup if you have, or to do a full wipe and start from scratch.
Sent from my HTC Desire using Flashes and Thunders

If that was the case, reflashing the ROM on top of my current system should fix the problem, while it didn't - right? Also, I find it hard to believe that "important system files" could have been damaged during routine Google Play apps update...

Than a full wipe and fresh install is inevitable...
Sent from my HTC Desire using Flashes and Thunders

Q TWRP Cannot wipe data/factory reset due to multiple lost+found folders

Using TWRP 2.6.3.0, I'm unable to wipe data. Every time I try, I get
"wiping data without wiping /data/media
E: error opening '/data/lost+found'
done."
I excluded the nonessential bits, if anyone wants a full log (something something partition details), I can make one.
I using ES File Explorer with root explorer on, I checked out /data and found two lost+found folders, which I think is causing my issue. I've tried deleting just one, but a second one is automatically generated. If I delete them both, then they're automatically recreated as well. If I delete them both and then remake one immediately after, another one will be remade.
I also checked the rest of the /data folder, and I did not find any lost+found files, so I'm pretty sure it's just the folders messing things up
I checked this thread, but I didn't find anything useful
http://forum.xda-developers.com/showthread.php?p=39497772
I ended up here after I accidentally wiped my internal storage with TWRP. I went from a 4.3 AOSP rom to 4.1.2 stock (HD RLS16). I wiped the 4.3 rom, but I think I accidentally wiped internal storage then as well, or maybe something was messed up with TWRP because the storage folder for 4.3 isn't in data/media (or at least not for the rom I was using). After that I used hyperdrive, which was super buggy with Gapps and didn't work at all. After adding an account, everything kept force closing, and things were extremely slow and took minutes to open, even after removing the account and wiping cache+dalvik.
I thought it had to do with the rom, so I went and wiped stuff, then went to CM 10.1.3 stable, but that didn't boot at all, so I tried wiping again and going to liquidsmooth 2.9, which is where my problems started again. I attempted to wipe again and go back to cm10.1.3. The wipe failed, but cm10.1.3 worked.
any ideas on how I can fix this? I was unable to find help on google.

xxkid123 said:
Using TWRP 2.6.3.0, I'm unable to wipe data. Every time I try, I get
"wiping data without wiping /data/media
E: error opening '/data/lost+found'
done."
I excluded the nonessential bits, if anyone wants a full log (something something partition details), I can make one.
I using ES File Explorer with root explorer on, I checked out /data and found two lost+found folders, which I think is causing my issue. I've tried deleting just one, but a second one is automatically generated. If I delete them both, then they're automatically recreated as well. If I delete them both and then remake one immediately after, another one will be remade.
I also checked the rest of the /data folder, and I did not find any lost+found files, so I'm pretty sure it's just the folders messing things up
I checked this thread, but I didn't find anything useful
http://forum.xda-developers.com/showthread.php?p=39497772
I ended up here after I accidentally wiped my internal storage with TWRP. I went from a 4.3 AOSP rom to 4.1.2 stock (HD RLS16). I wiped the 4.3 rom, but I think I accidentally wiped internal storage then as well, or maybe something was messed up with TWRP because the storage folder for 4.3 isn't in data/media (or at least not for the rom I was using). After that I used hyperdrive, which was super buggy with Gapps and didn't work at all. After adding an account, everything kept force closing, and things were extremely slow and took minutes to open, even after removing the account and wiping cache+dalvik.
I thought it had to do with the rom, so I went and wiped stuff, then went to CM 10.1.3 stable, but that didn't boot at all, so I tried wiping again and going to liquidsmooth 2.9, which is where my problems started again. I attempted to wipe again and go back to cm10.1.3. The wipe failed, but cm10.1.3 worked.
any ideas on how I can fix this? I was unable to find help on google.
Click to expand...
Click to collapse
I would flash back to stock in Odin and root again

xxkid123 said:
Using TWRP 2.6.3.0, I'm unable to wipe data. Every time I try, I get
"wiping data without wiping /data/media
E: error opening '/data/lost+found'
done."
I excluded the nonessential bits, if anyone wants a full log (something something partition details), I can make one.
I using ES File Explorer with root explorer on, I checked out /data and found two lost+found folders, which I think is causing my issue. I've tried deleting just one, but a second one is automatically generated. If I delete them both, then they're automatically recreated as well. If I delete them both and then remake one immediately after, another one will be remade.
I also checked the rest of the /data folder, and I did not find any lost+found files, so I'm pretty sure it's just the folders messing things up
I checked this thread, but I didn't find anything useful
http://forum.xda-developers.com/showthread.php?p=39497772
I ended up here after I accidentally wiped my internal storage with TWRP. I went from a 4.3 AOSP rom to 4.1.2 stock (HD RLS16). I wiped the 4.3 rom, but I think I accidentally wiped internal storage then as well, or maybe something was messed up with TWRP because the storage folder for 4.3 isn't in data/media (or at least not for the rom I was using). After that I used hyperdrive, which was super buggy with Gapps and didn't work at all. After adding an account, everything kept force closing, and things were extremely slow and took minutes to open, even after removing the account and wiping cache+dalvik.
I thought it had to do with the rom, so I went and wiped stuff, then went to CM 10.1.3 stable, but that didn't boot at all, so I tried wiping again and going to liquidsmooth 2.9, which is where my problems started again. I attempted to wipe again and go back to cm10.1.3. The wipe failed, but cm10.1.3 worked.
any ideas on how I can fix this? I was unable to find help on google.
Click to expand...
Click to collapse
Anytime you get that error format data (the one where you type yes) the folder gets corrupted and a format fixes it.
Sent from my SGH-I747 using xda app-developers app

Im getting the same E:Error opening '/data/lost+found' im my twrp 2.6.3.1 after flashing Official CM11 nightly dec 12.
So now my recovery is very messed up, i cant properly wipe or restore nandroid with ease anymore, did you by any chance find a solution to fixing this issue?

Mystikalrush said:
Im getting the same E:Error opening '/data/lost+found' im my twrp 2.6.3.1 after flashing Official CM11 nightly dec 12.
So now my recovery is very messed up, i cant properly wipe or restore nandroid with ease anymore, did you by any chance find a solution to fixing this issue?
Click to expand...
Click to collapse
This has happened to me twice and the only solution i have found was to wipe internal storage. unfortunately i wasnt able to backup my internal storage before wiping so eveything i had on my phone was erased. Everything in your external is safe you dont have to worry but if you had important files or anything that you wouldnt erase on your internal storage then that is very unfortunate.
As for me, i now backup everything maybe like once a month or so, just in case something like this happens again.

Its happened to me also and I could not resolve it without the wipe, that was the only viable solution that worked for me.
Sent from my SGH-I747M using Tapatalk

Although if you're using twrp I just found out you can still save some of your precious files.
How? Simple
You can go into recovery and into the file manager. I think it's in settings or advanced I'm not sure. But I know that is built into twrp. So then just go into your internal storage and select the files and move them to the external storage.
If it's your first time using the file manager then you'll have to get used to it because it's not 100% noob friendly
And remember the bigger the file the longer it'll take to move so just be patient.

Use AromaFM!
search bar will serve you..

KorGuy123 said:
Anytime you get that error format data (the one where you type yes) the folder gets corrupted and a format fixes it.
Sent from my SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Thank you very much, saved my life today!

Can i get some help please. I cant format data via TWRP, it says "E: unable to wipe data, unknow fle system, auto, unable to format to remove encryption". I did not put any encryption. What to do?

Have you tried using different versions of TWRP to wipe?

How do I erase everything on galaxy s3 i747

Hi,
I have i747 that has a clockworkmod recovery. How do I erase as much as possible of everything so that my phone is as clean as possible before I install a new ROM on galaxy s3?
I tried to factory reset phone, did all the 'delete/erase' options within clockworkmod recovery (except advanced section) and yet I see some residual folders from the previous installation. is there a way to completely erase wipe out everything without bricking the phone?
Thanks!

user-747 said:
Hi,
I have i747 that has a clockworkmod recovery. How do I erase as much as possible of everything so that my phone is as clean as possible before I install a new ROM on galaxy s3?
I tried to factory reset phone, did all the 'delete/erase' options within clockworkmod recovery (except advanced section) and yet I see some residual folders from the previous installation. is there a way to completely erase wipe out everything without bricking the phone?
Thanks!
Click to expand...
Click to collapse
You should really flash TWRP recovery before proceeding. CWM hasn't been maintained or updated in a long time. It is likely to give you problems flashing anything new.
To completely blank a phone in TWRP I use Wipe -> Advanced Wipe -> Dalvik, Cache, System, Data. Followed by Wipe -> Format Data then type "yes" to confirm; always a good idea if you're switching between Touchwiz and AOSP in particular. That will leave you with totally blank internal storage. You'll have to flash a ROM from an external SD, or load a ROM zip over USB while booted in recovery because internal storage will be wiped clean.
It might be a good idea to look into what bootloader and modem you're running too. If you're still using CWM, you might be on pretty old firmware that isn't going to work right with newer roms. Just don't start flashing bootloaders/modems willy-nilly. Samsung made this phone kind of easy to hard brick on the newer firmwares. There's a right way to update it, if you find you have to.

jason2678 said:
You should really flash TWRP recovery before proceeding. CWM hasn't been maintained or updated in a long time. It is likely to give you problems flashing anything new.
To completely blank a phone in TWRP I use Wipe -> Advanced Wipe -> Dalvik, Cache, System, Data. Followed by Wipe -> Format Data then type "yes" to confirm; always a good idea if you're switching between Touchwiz and AOSP in particular. That will leave you with totally blank internal storage. You'll have to flash a ROM from an external SD, or load a ROM zip over USB while booted in recovery because internal storage will be wiped clean.
It might be a good idea to look into what bootloader and modem you're running too. If you're still using CWM, you might be on pretty old firmware that isn't going to work right with newer roms. Just don't start flashing bootloaders/modems willy-nilly. Samsung made this phone kind of easy to hard brick on the newer firmwares. There's a right way to update it, if you find you have to.
Click to expand...
Click to collapse
Thanks so much for providing such a detailed answer!! You make many very good points!!
Just to reflect on those...
1) Yes, CWM recovery has not been updated for about 2-3 years. I have 6.0.4.7 version. Where do I check how stale it really is? I tried googling for CWM recovery and saw tons of links with everyone talking about CWM but ZERO sites with actual CWM .zip or .img file
2) I did 'adb bugreport' and was able to find information on my bootloader and a modem:
Bootloader: I747UCUEMJB
Radio: I747UCUEMJB
I am not too sure for what I would need to use this information for though
3) when completely blanking the phone (doing all those wipe/erase actions you mentioned), would that erase the recovery as well or is recovery is kept on a some other partition that never gets touched
4) When installing TWRP over CWM, would TWRP override CWM or install side to side along with CWM?
Thanks!

The will need to run an updated bootloader and modem before installing the latest custom roms.

user-747 said:
2) I did 'adb bugreport' and was able to find information on my bootloader and a modem:
Bootloader: I747UCUEMJB
Radio: I747UCUEMJB
I am not too sure for what I would need to use this information for though
3) when completely blanking the phone (doing all those wipe/erase actions you mentioned), would that erase the recovery as well or is recovery is kept on a some other partition that never gets touched
4) When installing TWRP over CWM, would TWRP override CWM or install side to side along with CWM?
Thanks!
Click to expand...
Click to collapse
3 - Those wipes will just blank /system, /data and other partitions that would affect a rom. More critical areas like bootloader, modem, and recovery will remain untouched and intact.
4 - TWRP will overwrite CWM in the /recovery partition. They can't coexist.
2 - If you're comfortable with Odin, this thread might be the easiest and safest way to get updated. The Odin tar will get you up to NE4 firmware that should work with all the newest roms. Before modding, you could check for updates a few times in that stock rom. There should be two, one from NE4 to NJ1, and one NJ1 to NJ2. NJ2 is the newest and almost certainly last update for the i747.
If you don't like using Odin, there are recovery flashable zips to update the firmware for i747 too. You just have to be very careful how you go about it or you can brick the phone.

audit13 said:
The will need to run an updated bootloader and modem before installing the latest custom roms.
Click to expand...
Click to collapse
I was able to install the most recent octos just a few days ago with my stale configuration: old bootloader and old cwm recovery. My phone i747 currently has nougat.
When you speak of 'latest roms' what exactly do you have in mind?

jason2678 said:
3 - Those wipes will just blank /system, /data and other partitions that would affect a rom. More critical areas like bootloader, modem, and recovery will remain untouched and intact.
4 - TWRP will overwrite CWM in the /recovery partition. They can't coexist.
2 - If you're comfortable with Odin, this thread might be the easiest and safest way to get updated. The Odin tar will get you up to NE4 firmware that should work with all the newest roms. Before modding, you could check for updates a few times in that stock rom. There should be two, one from NE4 to NJ1, and one NJ1 to NJ2. NJ2 is the newest and almost certainly last update for the i747.
If you don't like using Odin, there are recovery flashable zips to update the firmware for i747 too. You just have to be very careful how you go about it or you can brick the phone.
Click to expand...
Click to collapse
I am actually quite familiar with Odin. I used to root i747 with it. Then I wanted to update to the latest official rom and ironically soft-bricked the phone to the point where it was dead...nothing worked at all. If I remember correctly I wrote i9305 Rom to i747 phone. Then I found out that during boot the phone internally still scans through sd card and was able to take advantage of that to install recovery and consequently cyanogenmod os. I remember tons of Adb done. Since then the phone regained all functionality and now works very smooth with freshly installed octos. However, I see I am missing some hard drive space ie unusually large usage by octos. This makes me wonder if the 'bad original partition + bootloader +modem' are still in there but not invoked for some reason and the explanation behind my what appears to be successful installs is working os, etc are written to a separate partition which is now invoked. Is this hypothesis legit or not real? Is it at all possible that my cwm somehow is installed on a partition that is delete-able or that cannot be a possibility and all recovery goes into write-protected space?
And while we are in this topic, what are the obvious advantages of a newer boot loader if I can still install whatever custom roms?

user-747 said:
I was able to install the most recent octos just a few days ago with my stale configuration: old bootloader and old cwm recovery. My phone i747 currently has nougat.
When you speak of 'latest roms' what exactly do you have in mind?
Click to expand...
Click to collapse
Sometimes, a phone will not display the correct imei with the latest custom ROM unless the phone is running the most recent bootloader and modem for the particular phone.

audit13 said:
Sometimes, a phone will not display the correct imei with the latest custom ROM unless the phone is running the most recent bootloader and modem for the particular phone.
Click to expand...
Click to collapse
Thanks! Good to know.

I think this phone only has a 12 GB data partition. About 1.5 GB is reserved for /system, another 1 GB for /cache, and there are a host of other partitions. That's some of your used space. The rest could be cruft from old installs left over in userdata that a standard wipe of /data didn't get unless you format internal storage.
If what you have is working for you, then I wouldn't touch bootloader and modem.

jason2678 said:
You should really flash TWRP recovery before proceeding. CWM hasn't been maintained or updated in a long time. It is likely to give you problems flashing anything new.
To completely blank a phone in TWRP I use Wipe -> Advanced Wipe -> Dalvik, Cache, System, Data. Followed by Wipe -> Format Data then type "yes" to confirm; always a good idea if you're switching between Touchwiz and AOSP in particular. That will leave you with totally blank internal storage. You'll have to flash a ROM from an external SD, or load a ROM zip over USB while booted in recovery because internal storage will be wiped clean.
It might be a good idea to look into what bootloader and modem you're running too. If you're still using CWM, you might be on pretty old firmware that isn't going to work right with newer roms. Just don't start flashing bootloaders/modems willy-nilly. Samsung made this phone kind of easy to hard brick on the newer firmwares. There's a right way to update it, if you find you have to.
Click to expand...
Click to collapse
jason2678 said:
I think this phone only has a 12 GB data partition. About 1.5 GB is reserved for /system, another 1 GB for /cache, and there are a host of other partitions. That's some of your used space. The rest could be cruft from old installs left over in userdata that a standard wipe of /data didn't get unless you format internal storage.
If what you have is working for you, then I wouldn't touch bootloader and modem.
Click to expand...
Click to collapse
Thanks for the insight!
I went ahead and updated by recovery to TWRP via Odin just a few minutes ago...
I see Under Advanced Wipe another option for Wipe -> Advanced Wipe -> Internal Storage. Should I also wipe out internal storage? What is it for anyway? Whats the difference between 'internal storage' and 'system'?

user-747 said:
Thanks for the insight!
I went ahead and updated by recovery to TWRP via Odin just a few minutes ago...
I see Under Advanced Wipe another option for Wipe -> Advanced Wipe -> Internal Storage. Should I also wipe out internal storage? What is it for anyway? Whats the difference between 'internal storage' and 'system'?
Click to expand...
Click to collapse
Honestly I'm not 100% sure what the Internal Storage wipe does under Advanced Wipe, and I don't feel like making then restoring a backup right now just to test it . I never use it. If I had to guess, I bet it wipes /data and possibly a few other partitions without preserving user files in /data/media/0, see below, but don't know that. It certainly won't blank the whole internal storage; some areas like recovery, modem, and aboot are far too important and won't be touched.
Here's what I can tell you. Doing Wipe -> Advanced Wipe -> system, data, cache, dalvik is typically good enough for flashing a new rom (switching from Touchwiz to AOSP can require some additional care), some would even say overkill the way rom installers are scripted today, but old habits die hard. However, Advanced Wipe -> Data will wipe /data without wiping /data/media. Since android got multi-user support, files reported to be in /sdcard are actually stored in /data/media/0 for the primary user, so that means that downloads, pictures, user app files and things like that can be left behind by just wiping data since /data/media is left untouched. It is useful if you don't want to shuffle your files off then back on the device to flash something new or if you're using a device without an external SD and have a rom zip stored on device in /sdcard, but it leaves stuff behind if you're looking for a clean start.
To completely blank /data pick Wipe -> Format Data and TWRP will format /data and leave nothing behind, not even /data/media like the normal Advanced Wipe -> Data preserves. Just make sure you're prepared for the phone storage to be blank. You'll have to flash from external SD or push files from a computer over usb. TWRP does automatically start up mtp and adb shortly after booting if you need to push files over usb.
/system is a partition of special reserved space just for the rom and system apps and not user files. It is usually mounted read only when booted up normally to keep us from messing anything important up. I hope this helps and doesn't just muddy the waters more.

jason2678 said:
Honestly I'm not 100% sure what the Internal Storage wipe does under Advanced Wipe, and I don't feel like making then restoring a backup right now just to test it . I never use it. If I had to guess, I bet it wipes /data and possibly a few other partitions without preserving user files in /data/media/0, see below, but don't know that. It certainly won't blank the whole internal storage; some areas like recovery, modem, and aboot are far too important and won't be touched.
Here's what I can tell you. Doing Wipe -> Advanced Wipe -> system, data, cache, dalvik is typically good enough for flashing a new rom (switching from Touchwiz to AOSP can require some additional care), some would even say overkill the way rom installers are scripted today, but old habits die hard. However, Advanced Wipe -> Data will wipe /data without wiping /data/media. Since android got multi-user support, files reported to be in /sdcard are actually stored in /data/media/0 for the primary user, so that means that downloads, pictures, user app files and things like that can be left behind by just wiping data since /data/media is left untouched. It is useful if you don't want to shuffle your files off then back on the device to flash something new or if you're using a device without an external SD and have a rom zip stored on device in /sdcard, but it leaves stuff behind if you're looking for a clean start.
To completely blank /data pick Wipe -> Format Data and TWRP will format /data and leave nothing behind, not even /data/media like the normal Advanced Wipe -> Data preserves. Just make sure you're prepared for the phone storage to be blank. You'll have to flash from external SD or push files from a computer over usb. TWRP does automatically start up mtp and adb shortly after booting if you need to push files over usb.
/system is a partition of special reserved space just for the rom and system apps and not user files. It is usually mounted read only when booted up normally to keep us from messing anything important up. I hope this helps and doesn't just muddy the waters more.
Click to expand...
Click to collapse
Thanks!
I will try to do wipe and reinstall Rom tonight and will update this thread. While we are in this topic, when flashing twrp via Odin in phone's download mode, I noticed that it says: Qualcomm secureboot: enabled. Does this mean my bootloader is locked?

user-747 said:
Thanks!
I will try to do wipe and reinstall Rom tonight and will update this thread. While we are in this topic, when flashing twrp via Odin in phone's download mode, I noticed that it says: Qualcomm secureboot: enabled. Does this mean my bootloader is locked?
Click to expand...
Click to collapse
No, the i747 never had a locked bootloader. You couldn't boot unsigned stuff like CWM, TWRP, or octos if it did.

jason2678 said:
No, the i747 never had a locked bootloader. You couldn't boot unsigned stuff like CWM, TWRP, or octos if it did.
Click to expand...
Click to collapse
Thanks!

user-747 said:
Thanks!
I will try to do wipe and reinstall Rom tonight and will update this thread. While we are in this topic, when flashing twrp via Odin in phone's download mode, I noticed that it says: Qualcomm secureboot: enabled. Does this mean my bootloader is locked?
Click to expand...
Click to collapse
I went ahead and did all the wipes and formats you recommend and all worked like a charm. OctOs installed like a charm, my disk space is regained, gapps are working, IMEI is good. so far I cannt find anyting that does not work. Thank you @jason2678 for your valuable feedback on my questions!!

[SOLVED] How to completely wipe literally EVERYTHING

I looked through many threads, posts, websites, and tutorials, but none of them say how to literally wipe my device completely (it could be that it's not possible), what I want to do is completely remove literally everything so that it's like a brand new hard drive without even any files in it.
'Factory Reset' doesn't remove everything because android still boots after a factory reset and android wouldn't be able to boot if there were no files on the device. TWRP doesn't remove everything either because how is twrp running, and I can still see the androids root directories in twrps file manager (TWRP does tell me that there's no OS installed, but then why is there still a functioning file system with actual files in them).
I want to completely wipe everything so that any future roms I download will have no way to be affected by any old kernels/roms/apps that I have installed in the past. I want to clean install android on top of a literally empty phone hard drive. If this isn't possible then what's the closest to that that I can get? Cuz I tried various roms and I had bugs that persisted between multiple roms even though other people said that they didn't have these issues.
In case you're wondering: I'm currently running LineageOS 15.1, oreo 8.1

Your best bet it to wipe using stock image. Reinstall TWRP and wipe system, cache and data before installing new ROM

I agree with the advice given by Vanschtezla.
Also, if you would completely wipe all data on the phone's storage then that would also wipe the partition table. The storage area is divided into partitions which are mounted to for example /system /data and /cache when your phone boots.
Also there is no real need to "wipe everything" as you say as that could brick your phone. If you just boot TWRP and wipe using "Factory reset" and additionally: System then everything should be clean enough to install a new ROM. Depending on the ROM it will wipe the System partition anyway.
Kernels reside in the system partition so when you wipe System, any Kernel is gone
Pre installed (system) Apps sit in the System partition so wipe System and they are gone
User Apps sit in the data partition so wipe data (that is included in the Factory reset) and they're gone
All in all I think you're expecting issues that simply do not exist. Especially if you just follow the instructions of the (custom) ROM you want to install.

THANK YOU!
peterpv said:
I agree with the advice given by Vanschtezla.
Kernels reside in the system partition so when you wipe System, any Kernel is gone
Pre installed (system) Apps sit in the System partition so wipe System and they are gone
User Apps sit in the data partition so wipe data (that is included in the Factory reset) and they're gone
Click to expand...
Click to collapse
This is exactly what I was looking for! Why don't any "How to wipe your phone" guides say these things (even the ones that get more technical don't mention what exactly gets deleted for each wipe option, which is why from your perspective it was probably very weird to read my question).

Question Can I skip wiping internal storage while changing roms?

Everytime I have to change my rom, My apks , music, books get wiped. Is there a possibiltiy to not wipe internal storage, just format , like it used to happen on a only devices?

Switching roms would require you to wipe, you may use some software to backup and restore your apps if you have root access. I don't flash roms now, but when I use to I used Titanium Backup for this, you can try it if it still works.

The OxygenOS @Funk Wizard? Lol

Bupreno said:
Everytime I have to change my rom, My apks , music, books get wiped. Is there a possibiltiy to not wipe internal storage, just format , like it used to happen on a only devices?
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If you are going between custom ROMs of the same base version (meaning they all use the same OOS base like C.62), you do not have to do the wipe operation and can just dirty flash, but it's highly recommended to do a wipe so you don't have weird issues. If you do decide to dirty flash, at least do the dev the courtesy of holding off any bug reports until after you factory reset because if you have a weird problem nobody else is reporting, there's a pretty good chance it's because you dirty flashed.
If you're going between stock ROMs, that's a bit more complicated. I have successfully used Fastboot Enhance to upgrade, downgrade, and crossflash between different versions and it generally works as long as I'm not trying to downgrade or upgrade between Android 11 and 12 and I make sure to delete all the cow partitions in the partition screen before starting the flash. Trying to go from ColorOS 13 beta back to C.62 didn't work either but I have flashed between various C builds of OOS for different regions as well as ColorOS 12.1 and they've all worked.
That said, you should always do a full backup because things do go wrong. I have done it so many times on this phone that I have it down to a science now. I hook my phone up and use adb pull -a /sdcard to grab everything, do a system backup to Google Drive using the backup option in settings, back up my Signal messages, and when I'm on a stock ROM, I use the OnePlus backup to grab all my apps and settings. When I restore, I skip the initial Google account setup, I delete the Android folder from the adb pull folder and drag and drop the rest of it to the root of the storage, then I use the OnePlus backup to restore (if it's a stock ROM), then I log into my Google account and run that restore and the rest of the setup process, then I restore my Signal messages. Doing it in this order, I end up with the least amount of data loss. I don't even have to reconfigure my battery settings for my apps on the stock ROM doing it this way, it's all carried over, which saves me about 15 minutes of turning off optimizations for everything so my notifications work right.