[Q] Factory reset doesn't do anything - Nexus 7 (2013) Q&A

Hi there,
I'm currently using Scott's stock ROM(rooted) and I noticed that performing factory reset via main menu or wiping via TWRP doesn't actually do anything. I tried it a few times but it still leaves pictures and app folders in the tablet. I also tried formatting data & internal storage but it bricked my tablet so I had to learn a few new things the hard way.
Am I just doing it wrong? Factory reset on my Note 2 worked just fine.
I'd appreciate any comments. Thank you!

Code:
fastboot erase userdata
fastboot erase cache

k26 said:
Hi there,
I'm currently using Scott's stock ROM(rooted) and I noticed that performing factory reset via main menu or wiping via TWRP doesn't actually do anything. I tried it a few times but it still leaves pictures and app folders in the tablet. I also tried formatting data & internal storage but it bricked my tablet so I had to learn a few new things the hard way.
Am I just doing it wrong? Factory reset on my Note 2 worked just fine.
I'd appreciate any comments. Thank you!
Click to expand...
Click to collapse
Factory reset doesn't erase contents of the "virtual" sdcard (ie /data/media)
You need to erase that separately yourself, either through file manager, custom recovery, or fastboot.

Thanks for the comments!
Everything is looking good now

Related

[Q] Phone Constantly Rebooting!

I was wondering if anyone can help me. I have looked at the other posts which relate to a very similar problem, but none of them have quite the same problem as me. Basically, all the phone will do is show the 'HTC Quietly Brilliant' loading screen and it is stuck in a reboot cycle. I can access the bootloader and I have tried to factory reset with no luck.
I was watching a YouTube tutorial on how to flash CM10 onto my One X (I do have ClockworkMod and all of that stuff installed already). Everything was going well, but the video only briefly (for maybe a second) mentioned the fact that you have to put the CM10 zip folder onto the phone storage before you flash the boot.img. I went on and followed the steps and tried to flash the boot.img, but as I said earlier, all the phone will do is reboot over and over again. I have charged it to full battery so this should not be a problem when I go to fix it.
I would be really grateful for any help on the subject as I contacted the person who made the tutorial, and he has not responded. Thanks in advance.
Havoc2510 said:
I was wondering if anyone can help me. I have looked at the other posts which relate to a very similar problem, but none of them have quite the same problem as me. Basically, all the phone will do is show the 'HTC Quietly Brilliant' loading screen and it is stuck in a reboot cycle. I can access the bootloader and I have tried to factory reset with no luck.
I was watching a YouTube tutorial on how to flash CM10 onto my One X (I do have ClockworkMod and all of that stuff installed already). Everything was going well, but the video only briefly (for maybe a second) mentioned the fact that you have to put the CM10 zip folder onto the phone storage before you flash the boot.img. I went on and followed the steps and tried to flash the boot.img, but as I said earlier, all the phone will do is reboot over and over again. I have charged it to full battery so this should not be a problem when I go to fix it.
I would be really grateful for any help on the subject as I contacted the person who made the tutorial, and he has not responded. Thanks in advance.
Click to expand...
Click to collapse
Have you placed the ROM's zip file in your phone's root?
If you haven't, go to fastboot and flash CWM 5.8.4.0 and then go into recovery > mounts and storage > mount USB. Now place your ROM into the storage and flash it via install zip from SD card. Don't forget to wipe data partition, cache partition and Dalvik cache.
If this wasn't your case, just try erasing data partition, cache and Dalvik cache again.
If it still doesn't work, try flashing another ROM.
Thank You!!!
SidDev said:
Have you placed the ROM's zip file in your phone's root?
If you haven't, go to fastboot and flash CWM 5.8.4.0 and then go into recovery > mounts and storage > mount USB. Now place your ROM into the storage and flash it via install zip from SD card. Don't forget to wipe data partition, cache partition and Dalvik cache.
If this wasn't your case, just try erasing data partition, cache and Dalvik cache again.
If it still doesn't work, try flashing another ROM.
Click to expand...
Click to collapse
Thank you so much. I had CWM 5.8.4.0 already, all I had to do was mount USB and put the CM10 zip on the phone storage! I also wiped the caches, the phone works better now than it ever has . Thank you so much again, really appreciate the help

Noob questions

1. What is the difference between the following terms: adb. fastboot, bootloader, recovery.
I understood a bit from efrant's thread but I still need some more clarity.
Correct me if I'm wrong - ADB is a mode which can be accessed by either booting into recovery or booting normally into android. and FASTBOOT is a mode which can be accessed by booting into the bootloader.
A key question still remains in my mind - what is the difference between booting into bootloader and booting into recovery?
2. How do I open command prompt in a specific folder? The instructions listed in efrant's thread don't work in Windows 7.
3. I can flash PA as long as I have an unlocked bootloader even if device is not unrooted?
4. Where do I get the fastboot.exe file and adb files (the .exe and two .dll files for Windows) being talked about in efrant's thread and what are they used for?
5. Are custom ROMs flashed to system partition?
6. Do I use ChainsDD's Superuser, or Chainfire's SuperSU?
Note:
Efrant's thread: forum.xda-developers.com/showthread.php?p=29733879#post29733879
TheMysteriousOne said:
1. What is the difference between the following terms: adb. fastboot, bootloader, recovery.
I understood a bit from efrant's thread but I still need some more clarity.
Correct me if I'm wrong - ADB is a mode which can be accessed by either booting into recovery or booting normally into android. and FASTBOOT is a mode which can be accessed by booting into the bootloader.
A key question still remains in my mind - what is the difference between booting into bootloader and booting into recovery?
2. How do I open command prompt in a specific folder? The instructions listed in efrant's thread don't work in Windows 7.
3. I can flash PA as long as I have an unlocked bootloader even if device is not unrooted?
4. Where do I get the fastboot.exe file and adb files (the .exe and two .dll files for Windows) being talked about in efrant's thread and what are they used for?
5. Are custom ROMs flashed to system partition?
6. Do I use ChainsDD's Superuser, or Chainfire's SuperSU?
Note:
Efrant's thread: forum.xda-developers.com/showthread.php?p=29733879#post29733879
Click to expand...
Click to collapse
1. The bootloader is Google's interface for flashing the phone with stock images. Recovery (stock) is used to flash OTAs & perform a Factory reset.
3. You need a custom recovery (either TWRP or CWM) to flash a custom ROM, your phone does not need to be rooted.
4. Look for efrant's (stickied) return to stock thread in the general section, it has the needed fastboot & adb files attached to the OP.
5. Yes & they also generally include a kernel (some have a stock kernel some use a custom)
6. AFAIK Chainfire's SuperSU is more reliable ATM on Jelly Bean.
http://wiki.rootzwiki.com/Android_SDK
That's the link I used to set up adb. Just make sure you get the nexus drivers set up right. To test it when you think you've got it all set up, make sure you have adb debugging checked in developer options, plug your phone in, open command prompt and type adb devices. It should spit out a line of numbers. If it's blank that means the phone drivers aren't set up right. If you want to test it further you can try an adb push command.
Where are Nandroid backups stored? Are the backups still there after a factory reset?
Where are Titanium backups stored? Are the backups still there after a factory reset?
Using adb you choose where to store your nandroids.
For titanium open the app and it shows where on the main screen.
Don't forget to thank those who helped
Edit: backups remain as long you don't wipe internal or external storage
namtombout said:
Using adb you choose where to store your nandroids.
For titanium open the app and it shows where on the main screen.
Don't forget to thank those who helped
Click to expand...
Click to collapse
But where do I store the backups so that I can access them even after a factory reset?
Does a factory reset delete everything literally?
TheMysteriousOne said:
But where do I store the backups so that I can access them even after a factory reset?
Does a factory reset delete everything literally?
Click to expand...
Click to collapse
/sdcard/clockwordmod/backup -- copy the whole folder with the date and time on it. replace it in the same location if you want to restore from it
edit: for titanium backup, copy the whole folder on the root of your sdcard labelled "titaniumbackup"
Create a folder named nandroid in your internal storage.
Factory reset won't wipe any of your files in your internal storage.
namtombout said:
Using adb you choose where to store your nandroids.
For titanium open the app and it shows where on the main screen.
Don't forget to thank those who helped
Edit: backups remain as long you don't wipe internal or external storage
Click to expand...
Click to collapse
I don't think you understood what I was trying to say.
Suppose I make a Nandroid backup now and then perform a factory reset. Will that nandroid backup still be a available on the phone?
TheMysteriousOne said:
But where do I store the backups so that I can access them even after a factory reset?
Does a factory reset delete everything literally?
Click to expand...
Click to collapse
I am on CM10.1 and the backup I made with CWM was stored in data/media/clockworkmod/backup. Its an odd location but I have done factory resets in order to install other ROMs and the backup remains. And a factory reset does not wipe the Internal storage. A factory reset pretty much just resets the system files back to stock. The only thing you really lose is your apps. All your personal files (pictures/videos/etc.) are left alone.
namtombout said:
Create a folder named nandroid in your internal storage.
Factory reset won't wipe any of your files in your internal storage.
Click to expand...
Click to collapse
Then what exactly does a factory reset do - what do I lose in a factory reset?
And if factory reset doesn't wipe everything, what does?
jsgraphicart said:
And a factory reset does not wipe the Internal storage. A factory reset pretty much just resets the system files back to stock. The only thing you really lose is your apps. All your personal files (pictures/videos/etc.) are left alone.
Click to expand...
Click to collapse
I use twrp recovery. Wiping internal or external storage wipes everything
namtombout said:
I use twrp recovery. Wiping internal or external storage wipes everything
Click to expand...
Click to collapse
But a simple factory reset doesnt wipe the internal storage. There may be options in there to do so but I thought we were just talking about a factory reset.
TheMysteriousOne said:
Then what exactly does a factory reset do - what do I lose in a factory reset?
And if factory reset doesn't wipe everything, what does?
Click to expand...
Click to collapse
its simple.
Factory reset wipes /data (where all your play store/side loaded apps and data (app settings, etc) are stored)
and /cache
it does not touch the /data/media which is your internal storage. since there is no external storage on the nexus, there is nothing to worry about there
/system does not get touched unless you flash a new rom or wipe it manually from recovery
if you wipe /system, you better have another rom to flash in its place....or the phone wont boot into the OS, because /system contains the OS
TheMysteriousOne said:
Then what exactly does a factory reset do - what do I lose in a factory reset?
And if factory reset doesn't wipe everything, what does?
Click to expand...
Click to collapse
Are you asking because you WANT to wipe everything or are you afraid of losing stuff?
You Sir are correct. Just quoted you to help answer op questions.
namtombout said:
Create a folder named nandroid in your internal storage.
Factory reset won't wipe any of your files in your internal storage.
Click to expand...
Click to collapse
Note: nandroid backups get created on /sdcard aka /data/media.
TheMysteriousOne said:
I don't think you understood what I was trying to say.
Suppose I make a Nandroid backup now and then perform a factory reset. Will that nandroid backup still be a available on the phone?
Click to expand...
Click to collapse
Answered by the poster above, thank him. I corrected him, as well.
TheMysteriousOne said:
Then what exactly does a factory reset do - what do I lose in a factory reset?
And if factory reset doesn't wipe everything, what does?
Click to expand...
Click to collapse
Answered below.
jsgraphicart said:
But a simple factory reset doesnt wipe the internal storage. There may be options in there to do so but I thought we were just talking about a factory reset.
Click to expand...
Click to collapse
Pirateghost said:
its simple.
Factory reset wipes /data (where all your play store/side loaded apps and data (app settings, etc) are stored)
and /cache
it does not touch the /data/media which is your internal storage. since there is no external storage on the nexus, there is nothing to worry about there
/system does not get touched unless you flash a new rom or wipe it manually from recovery
if you wipe /system, you better have another rom to flash in its place....or the phone wont boot into the OS, because /system contains the OS
Click to expand...
Click to collapse
There's an option in twrp at least, that allows to format the internal storage. if you do it by accident or need a fresh start/don't care about the data, of course you'll need to know how to use adb to push stuff back to it, previously pulled from it to the PC.
What I'm saying is that it only matters as much as you care about your data stored up until that point. I keep regular, tarball backups of /data/media in my PC.
Sent from my i9250
So, Nandroid backs up all 13 partitions?
Note: nandroid backups get created on /sdcard aka /data/media.
Click to expand...
Click to collapse
What is this /data/media that you talk about?
I read that Nandroid backup gets stored on /sdcard/clockworkmod/backup
Edit: Also, http://www.vikitech.com/10347/perform-nandroid-backup-restore-android-device says "A point to note here is that your SD Card data is not backed up."
TheMysteriousOne said:
So, Nandroid backs up all 13 partitions?
What is this /data/media that you talk about?
I read that Nandroid backup gets stored on /sdcard/clockworkmod/backup
Edit: Also, http://www.vikitech.com/10347/perform-nandroid-backup-restore-android-device says "A point to note here is that your SD Card data is not backed up."
Click to expand...
Click to collapse
The backup will be in either location. Some phones put it on the sd card. I just recently got a Nexus and found out it was backed up to data/media/clcockworkmod/backup. To get to that location, you need a root browser. I use Root Explorer and love it. Once you get one, you can go to the root directory of your phone and start going into each folder data/media/clockworkmod/backup.
/data/media/ is the same as /sdcard/
You must backup your own sdcard. Adb push /data/media to a computer

[Q] GNex stuck at bootup screen - how to recover files?

After a dead battery earlier today, my phone is stuck at the 'X' bootup screen. The phone is rooted and has a custom ROM on it that I did not do myself, someone else did it over a year ago.
I got into recovery mode and clockworkmod recovery v6.0.0.5. I tried wipe cache which did not fix the problem. I assume that I have to do the wipe data/factory reset option, is that right?
If so, how can I get my pictures and videos off the phone first? A fuller backup with SMS and so on would be nice as well.
I did a 'Nandroid' backup just now in CWM and it completed successfully, but I don't know where it went, it talked about an sd card but of course there is none. I would think whatever backup I made will be wiped away if I do the factory reset option.
When I plug in the USB in this recovery mode, my PC says it could not install the drivers correctly. I tried installing the drivers from samsung's website and it did not help.
Any help is greatly appreciated!
Ok, I have made a little progress I think. I got drivers and fastboot and adb files. I can now connect over fastboot in the bootloader and adb in clockworkmod. Now I am trying to figure out how to get my files.
Also I'm not clear on what is next. Can I just use the factory reset option in CWM and then everything will be fine?
Success! I used adb pull and got my entire sdcard directory which at least includes pics and vids.
Now what about SMS and MMS? And is there any chance of restoring all my apps and settings and everything? I assume that replicating everything would run the risk of just having another boot loop error! Not sure what to do or if I need to figure out how to flash a new ROM or what.
thor_ said:
I assume that replicating everything would increase the risk of just having another boot loop error!
Click to expand...
Click to collapse
Correct.
a maguro wrote this.
thor_ said:
Success! I used adb pull and got my entire sdcard directory which at least includes pics and vids.
Now what about SMS and MMS? And is there any chance of restoring all my apps and settings and everything? I assume that replicating everything would run the risk of just having another boot loop error! Not sure what to do or if I need to figure out how to flash a new ROM or what.
Click to expand...
Click to collapse
A factory reset erases everything on your phone EXCEPT nandroid backups and pics, music, etc on your sd card. You say you have no sd card but it is probably just not removable on your phone. Nandroid backups are saved on the sd card where they wont be erased. Texts, call history, etc are gone...just let them go, nbd. For future reference there are tons of apps that back up everything you want and you can set them to back up your stuff every day (titanium backup, eg).
sd0070 said:
A factory reset erases everything on your phone EXCEPT nandroid backups and pics, music, etc on your sd card. You say you have no sd card but it is probably just not removable on your phone. Nandroid backups are saved on the sd card where they wont be erased. Texts, call history, etc are gone...just let them go, nbd. For future reference there are tons of apps that back up everything you want and you can set them to back up your stuff every day (titanium backup, eg).
Click to expand...
Click to collapse
Thank you so much for the replies.
To confirm: I now have to adb push a rom file to my sdcard and then install from CWM.
What I have been trying to figure out is whether there is a stock ROM I can flash using this method? If not some other rom will be fine.
sd0070 said:
A factory reset erases everything on your phone EXCEPT nandroid backups and pics, music, etc on your sd card.
Click to expand...
Click to collapse
not true.
a factory reset in a custom recovery leaves these items, if you had stock recovery, it would wipe the device.
---------- Post added at 09:56 AM ---------- Previous post was at 09:55 AM ----------
thor_ said:
Thank you so much for the replies.
To confirm: I now have to adb push a rom file to my sdcard and then install from CWM.
What I have been trying to figure out is whether there is a stock ROM I can flash using this method? If not some other rom will be fine.
Click to expand...
Click to collapse
if you want to flash the stock rom, use fastboot and the factory google images
you can adb push a custom rom over and flash it that way.

[Q] About Factory Reset

I just bought used note 3 it rooted, running on kitkat not sure which version
so he already did factory reset, but when i used root explorer i found many downloaded files and picture on the internal storage, isn't it supposed to be deleted when doing factory reset? to confirm this i do couple factory reset it the result is the same. even some folder for some app that i didnt own is there. wonder how i can really reset it to become like new phone?
re: factory data reset
Michitaka said:
I just bought used note 3 it rooted, running on kitkat not sure which version
so he already did factory reset, but when i used root explorer i found many downloaded files and picture on the internal storage, isn't it supposed to be deleted when doing factory reset? to confirm this i do couple factory reset it the result is the same. even some folder for some app that i didnt own is there. wonder how i can really reset it to become like new phone?
Click to expand...
Click to collapse
There are two kinds of factory resets, one is done in recovery mode
and is simply called "factory reset". This type of reset does not delete
all the personal data on your internal sdcard.
If you want to a full factory reset you need to go into the settings of
the phone and then navigate to "backup and reset".
There you will see an option to "Factory Data Reset", if you select that
option it will fully wipe your phone's internal sdcard including all personal
information, data, videos, downloaded apps and pictures (everything)
Good luck!
Its works. thank you so much

[q] CWM - Factory Reset .. still leaves stuff behind?

So after tinkering around with the AFTV (mounting external usb as internal, etc) , i decided to start fresh. I did a factory reset, but noticed that there's stuff that's still around. for example, I noticed there's an /emulated/legacy folder with some old stuff like my XBMC folders even though after the factory reset I installed SPMC. Also when I installed the ikonoTV app again, it already had the XBMC icon switched in still. Is it correct that the factory reset just wipes a certain portion and leaves others (the "SDcard" portion of the AFTV)? If so, how do i fully go fresh start with everything wiped?
Thanks
Boot into clockwork recovery, wipe /data and /system and reflash the pre rooted software version you want. It will even make you watch the welcome video again. Make sure you have updates blocked on router because com.Amazon.dcp will not be disabled until you disable it again.
Thanks! I guess I need to wipe /system as well then.
Router is blocking the updates so should be good.
barrist said:
Thanks! I guess I need to wipe /system as well then.
Router is blocking the updates so should be good.
Click to expand...
Click to collapse
Factory reset will not FORMAT /data, but just delete everything but /data/media, which is /sdcard. There is a separate option for wiping /data & /data/media. If you wipe /system you must be extra careful you NEVER attempt to reboot before reflashing something onto it.
Do you think it's useful to wipe the system or should wiping data media be enough for a fresh start ?
Sent from my iPhone using Tapatalk
barrist said:
Do you think it's useful to wipe the system or should wiping data media be enough for a fresh start ?
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
As long as you didn't change /system, there is no point in touching it. But like I said, if you do, make absolute sure to reflash something.
I got a bit of a problem here.
I extracted two .obb folders with FolderMount to my usb drive and then set my aftv (running your pre-rooted 51.1.4.0_514006420) back to factory settings + did wipe cache, data and dalvik in recovery.
all runs fine except I can not enter the usb drive.
stickmount shows it is mounting "sdcard/usbStorage/sda1" but I can not access it, neither in ESFile explorer nor FolderMount.
sdcard/usbStorage/sda1 is showing the two empty .obb folders and I can not change them.
I just reinstalled 51.1.4.0_514006420 from recovery but saw there is a lot of junk left + the same problem with the usb drive.
how can I safely wipe to a totally clean 51.1.4.0_514006420 ?
best
rbox said:
As long as you didn't change /system, there is no point in touching it. But like I said, if you do, make absolute sure to reflash something.
Click to expand...
Click to collapse
Hi, sorry to jump on this discussion but I think I may well of done this exact process and rebooted before reflashing.
My fire tv will now only boot to the White Amazon logo and won't revert to factory restore at all using the alt-print screen-I method. All I can manage is constant reboots.
Any ideas?
Does this mean I have in fact bricked my fire to and there's no way back for me?
Paul

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