[HELP] unmount of /data failed (-1) device or resource busy - HTC 10 Questions & Answers

Hi, I've got a huge issue with my phone.
I was using the PureFusion 8.0 EAS Rom and i wanted to get back to stock because of some bugs in this ROM (audio issues with my headphones, low battery life ...).
I've tried to use the RUU.exe but I got an "Error 170 USB Connection". So I searched for a stock ROM with oreo and I decided to download LeeDroid 8.0 and another Deoxed stock ROM.
I've done A wipe cache & dalvik and install the LeeDroid one, choosing data encryption. But it doesn't ask me for a password and the phone encrypt itself after that, the phone bootlooped and I've been waiting for about 15 minutes to see if this was really a bootloop or just a bad boot animation. Then I restarted the phone to install the Deoxed's Rom but I can't, their is an error message with "unmount of /data failed (-1) device or resource busy" and when I boot up the phone it's stuck on HTC build for developpement purpose only (...).
How can I make the ressources no busy again ? Is it because of the encryption ? I've tried full wipe (data, boot, cache, system) but for the leedroid or the deoxed's rom I get stuck on the HTC's logo.

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system partition size reduced, Please somebody solve my issue

Honorable forum members,
i can't explain my problem more detailed than this and attached logs and screenshots
I am having a problem with my redmi 1s since 4 days (reporting daily to everybody and every thread i know, Now i came to some conclusion *from my point of view*) i.e., System partition size reduced ( due to "My fault" of trying to expand system storage). Now i can't flash any custom rom on my phone. (Except CM11). I'm getting an error, i.e.,
1. strucks at - "Patching system image unconditionally"
2. and some times it gives me an error "E/system unable mount" and breaks operation here.
I was using CM14.1 official rom till 12th of this month ( So no need to doubt about proper installing of custom rom). As i'm unable to install any custom rom on my phone (tried CM12,13,14,14.1, RR, AICP). Then i tried MIUI. Surprisingly I can install MIUI from recovery (works well) but not from fastboot (by fastboot, after installation strucks at Mi Logo, wiping cache and dalvik cache doesn't work too). ***Another big wonder is that i'm able to install CM11 (works well but not used gapps)***. I think my phone no longer upgrades from Kitkat. Is it true?
Then after several research and several suggestions from some honorable forum members i found that (may be) the problem is with system partition. i.e., My system partition size decreased. It was my fault. I tried to increase my system partition to install aroma gapps (in the need of OK Google voice recognition from any screen and due to some google apps were creating a lot of cache) using a thread on increasing system partition size from our forum (not to specify). Then i realized that i'm not the one who can modify anything on somebody Else's rom- as after receiving a update, it took one after another all the google apps from me.
Then i used revert back flash file from the same thread, but it took something extra along with my some of my phones original system partition size. Tried restoring backup but not worked.
While installing custom rom it strucks at " patching system image unconditionally" (waited every time at least an hour), as i'm not being able to do anything, so i restart my phone. Then when i try again it gives me an error "E/System unable to mount". Then if i try to wipe or resize or repair nothing works gives same error. But if i format using f2fs and then again using ext4, then i can mount system partition in MOUNT in twrp (also tried Philz recovery and CM recovery- same issue). After Mounting when i try to install again it strucks at " patching system image unconditionally". So same cycle continues. But when i try to insatll MIUI or CM11 it works fine -after mounting system partiton ( not even takes command i.e., " patching system image unconditionally" in terminal).
Also i tried to flash the rom using adb sideload strucks at 45%, checked the rom file whether corrupted by extracting and for exact rom redownloaded. But there is no improvement.
Maybe Because of this I'm not being able to flash any custom rom on my device anymore. I've took some recovery log files and some screenshots from recovery of my phone. Here below i'm attaching them.
Finally i would like to inform you that
i) i'm using latest recovery- twrp 3.0.2-1,
ii)and latest firmware- v8.1.2.0. (used whichever firmware required for every rom).
iii) Now i'm using global stable MIUI v8.1.2.0
So now i request you all to please help me in installing a custom rom on my Redmi 1s.
I have updated the tutorial with the solution for your problem follow this link
http://forum.xda-developers.com/redmi-1s/general/tut-repartition-redmi-1s-to-increase-t3506904

Lenovo P2 encryption failed

Hello
So this evening I tried to flash the Android Pie version of Liquid Remix.
Flashed ROM and Gapps without any problem.
Then after I typed my pin to load the OS, i got an error saying "decryption failed"
So, i tried to follow the instructions on screen, it rebooted to twrp and then to the system and i got the same result.
Then I did a full wipe of my partitions (System, data, dalvik, Storage and cache) and reinstalled the rom and the gapps.
This time I got the error "encryption failed".
So i booted to recovery, but now it's like i'm locked outside. I'm not asked for Pin to decrypt and I can't do anything.
ADB says decive unauthorized. AM I DOOMED or there is a solution?
UPDATE 1: I'm not and android expert, and i don't know what is happening to my phone: So I desperately rebooted into system from twrp, and it actually booted into the os. There wasn't any "first launch" procedure but i'm in.
Did the phone fix itself or AM I still DOOMED?

Brick issue

Hello, I'm new here and I need help, let me explain...
I already have it unlocked with TWRP 3.2 (latest) with AEX rom, but I can't install any rom on it since I have some issues:
On TWRP:
When I try to install it can't mount /data and /cache. I have already tried to make them ext2 then ext4 and format data. System, Vendor and Firmware is mounting fine, just cache and data not.
On QFIL:
Tried to install stock rom via but is also not working, I don't know about those errors but also seem like permissions (maybe?). It finishes download, but when I start the phone still there AEX and nothing changed, stuck on the logo just loading...
* Logs -- https://pastebin.com/63L6cnwp
On MiFlash:
Installed everything ok but nothing happen, when start the phone still same.
My phone is Z2131, I have already tried Z2132 but none of them work.
Please help me ;c

Stuck at bootloop after installing stock rom

My device was rooted with magisk,and when i tried to update device to android 10 manually it restarted in twrp recovery mode.
When i tried to format data it said "unable to mount vendor ( it was showing some permission issue).
Then i flashed Stock rom and it installed successfully. Then i cleared cache and data and rebooted my device. And now its stuck in boot loop.
Please help me.

RN8 file problems

Hello I have a problem with the files on my device and it is that when trying to install a ROM using TWRP I get that it has failed and a lot of messages saying:
"Error opening: ยด/data/user_de/0/" (Here it puts rare names of symbols and letters) operation not permitted
I already tried to mount the data folder from the recovery and I also tried to install the ROM from ADB commands but it is not possible, this is not the first time that I installed a ROM since I had Pixel Experence and when installing it it did not show me any error and now the Device does not start as it has no ROM and when it turns on it opens the TWRP.
someone could help me with that please.
I'm having problems with TWRP and OrangeFox, permission errors all the time
I'm facing some permissions problems and thus being unable to install Paranoid Android Q5. I was using MIUI 12 (Xiaomi.EU). The steps I took to change the ROM: Formated data (errors started right away) then I did the usual wipes (cache, dalvik...
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