Failed to mount '/devlog' (invalid argument) [SOLVED]but boot loop still happening - One (M7) Q&A, Help & Troubleshooting

So my phone was in charger last night and when I woke up, the phone was stuck in HTC logo splash screen. I was curios to see what happened so I tried to force restart but it didn't help. The next thing I did was to enter the recovery to see if there was any problem there. What I noticed was that my sdcard was showing no data on it, so I connected it to PC and mount the sdcard, the sdcard size was suggesting that there should be data on it but there was nothing inside when I tried to open the folder. This was the first time this issue was happening to me.
So the next best thing that I had in mind was to factory reset the phone in TWRP and reinstall the ROM (Xenon HD) and then GApps. Well everything was fine and the ROM booted but since in the latest update of the ROM, root was not present, I went to recovery and installed Magisk 14.0 and then restarted it. After the restart, I notice that the phone boot loops in the ROM splash screen. So I gave it another try to reset my phone but this time only formatting the system like usual way of installing ROM. This is where the issue happened.
Every time I tried to wipe or install anything, at the first and and the end of the log, it states that "Failed to mount '/devlog' (invalid argument)". I thought it was normal and I proceeded with reinstalling the ROM but it won't boot and gets stuck in boot loop. I tried to search for this specific error but in every site, failing of mounting data or system or cache or all of them together with devlog was mentioned but not devlog by itself. I tried many ways suggested in the forums like:
Installing newer version of TWRP
Formatting the partitions to ext2 then reformat to ext4
but non helped.
I really appreciate if anyone could help me figure out how to solve this issue I'm facing. My phone is HTC M7 GSM, S-OFF and the latest GPE firmware is installed.
Thank you

I reflashed my firmware since, when I did getvar, it was showing blank version-main. This solved the error in the TWRP ( /devlog) BUT every time I try to install any ROM, after installation, it shows the ROM splash screen but then it boots loops forever. I tried many ROMS from Lolipop to Noughat all having the same problem. The other thing I forgot to mention after this issue happened there is now a black stagger line under the HTC logo whenever the phone boots. This was not there before and it only happens in that stage of booting.
I appreciate any help

Related

[Q] Need help fixing this bootloop please!

Okay, so I am having a lot of trouble with a bootloop for seemingly no reason. I got two nexus 6'es, and i unlocked, rooted, and flashed TWRP on mine, no problem at all.
So onto my gf's, I did fastboot oem unlock, and then i went to reboot-bootloader, but i accidentally bumped the power button, which was on "Start". It launched a weird loading style screen - the green android standing up with a blue ball spinning around (NOT the stock recovery, android laying down with chest open) , and i couldn't do anything. eventually, when i hit the volume up button, it said "Formatting /data..." but it never completed.
The only thing I could do was unplug it from my computer (mac) and put it in fastboot mode again. I tried flashing all the shamu factory images, and then rebooted again. Same thing. Now, i re-locked and then unlocked the phone again. Now it's just looping at the red, blue, green and yellow circles for over ten minutes now. What the heck can i do to fix this? I can in no way get it to boot to the lock screen, but fastboot is working fine and it recognizes the device
Edit: Got into TWRP by writing it over stock recovery. Tried to factory reset in TWRP and got the following errors:
E: Unable to mount /data
Unable to mount /cache
Unable to mount /storage
Wiping the cache should fix it.
joshua.justice said:
Wiping the cache should fix it.
Click to expand...
Click to collapse
Okay, i wiped cache, userdata, system and everything just to be safe, am currently finishing flashing the rest of the factory images, waiting on system. I'll let you know
joshua.justice said:
Wiping the cache should fix it.
Click to expand...
Click to collapse
./fastboot erase cache did not work still looping the four colored circles
joshua.justice said:
Wiping the cache should fix it.
Click to expand...
Click to collapse
Got this when trying to Factory reset in TWRP Got into TWRP by writing it over stock recovery.
E: Unable to mount /data
Unable to mount /cache
Unable to mount /storage
I was trying to take picture but suddenly my phone restarted. Then after few sec it was not booting up. It was giving me blank screen, no boot animation was coming up. So now what should I do? I try to wipe/factory reset the phone but still phone was not booting up. It was still stuck on blank screen. Please help?
Device: nexus 4
I got stuck in a boot loop also. I had to reflash the factory image. See this link here. It's the best way to do it just follow the instructions you should be fine. http://www.ibtimes.co.uk/how-fix-er...roid-5-0-factory-images-nexus-devices-1474865
Try to flash the unencrypted boot image, mine did the same thing when in first flashed TWRP to it and it. Then reflash the stock image and wipe the phone.

Read-only M7?

Hello there!
Last night, my phone is perfectly fine until this morning. I woke up and my phone stucked in HTC Logo. I can still access the Recovery (TWRP). I tried reflashing, updating the TWRP, but it still stucked in the HTC Logo and after 2-3 mins, it will reboot to recovery.
I tried to add ROM and reflash but it gives me an error copying of the ROM. I tried copying files from my M7 and it works. I tried deleting some files on my M7, the files deleted but when I refresh the unit, its still there - and this is why I believed that my phone is on read-only status.
By the way, im accessing my phone via TWRP MTP Enable.
zyxer_raffy said:
Hello there!
Last night, my phone is perfectly fine until this morning. I woke up and my phone stucked in HTC Logo. I can still access the Recovery (TWRP). I tried reflashing, updating the TWRP, but it still stucked in the HTC Logo and after 2-3 mins, it will reboot to recovery.
I tried to add ROM and reflash but it gives me an error copying of the ROM. I tried copying files from my M7 and it works. I tried deleting some files on my M7, the files deleted but when I refresh the unit, its still there - and this is why I believed that my phone is on read-only status.
By the way, im accessing my phone via TWRP MTP Enable.
Click to expand...
Click to collapse
Use MTP to copy everything important you want to keep to your pc.
Then in twrp select "Wipe" then "Format Data" (Warning this will format your entire device, any currently installed Rom, internal storage everything will be gone) You will be prompted type yes to continue. When it's completed.
Reboot Recovery < --------- Important.
After rebooted copy your Rom or Backup to the device using MTP and install/Restore it with TWRP. :good:
Tried this but still, the files still there. I forgot to put in my first post that I already tried wiping the Data. Any hope for this?
My bad. It worka but when i flashed the latest cm12, my phone keeps bootloop ahter 5mins
zyxer_raffy said:
My bad. It worka but when i flashed the latest cm12, my phone keeps bootloop ahter 5mins
Click to expand...
Click to collapse
Can you post the output of
Code:
fastboot getvar all
Please remove your imei and serial number before posting.
Also a link to the CM Rom you flashed please. :good:

S3 i8190l stuck in loop after flashing CM12.1

Hey everyone,
I'm having a problem after trying to flash CM12.1 on a i8190l.
The instructions I basically followed are the ones mentioned here: novafusion.pl/tutorials/installation-guide-golden/ and I used the rom Lollipop 5.0.2 (CyanogenMod 12.0) 20150428 stable with the Odin app to install it.
All went well up to the point 12. Click on Wipe, then use slider on the bottom to let process begin.
At this point I received a FAILED message with an error message saying below that /data couldn't be mounted. After that, I rebooted the phone, and it started loading the first android screen apparently. After a few minutes, Android threw up an error saying that it couldn't encrypt the data and had to reboot. After that reboot, the system won't stop going over a loop boot that flashes TeamWin over and over again.
I can still get to the download mode, what is the recommended step to take from here? Is it possible to recover the OS? Do I have to worry about the battery running out, or does it charge up while on download mode/other mode?
Thanks for your help

corrupt /persist: phone full bricked

Hey guys,
after my phone yesterday crashed it never went to boot fully again. I was using my phone normally, when suddenly after a crash my phone rebooted to TWRP and I got the message "Failed to mount '/persist' (Invalid argument) " . So yeah I was ****ed, I didn't have any what to do and actually I couldn't do much. Reflashing over fastboot didn't work out, so flashing over twrp did the thing. I pushed the persist.img on my phone and overwrote it with a dd command and hoped everythng worked. So I rebooted and suddenly my phone doesn't get detected properly by fastboot and adb, sometimes connection established and then breaks. The second thing I noticed that my data partition is corrupt. I can delete what I want, after a reboot everything is back at the old state, I even can't repair the partition.
I actually have the feeling it is the fault of the /persist/ partition and things that have gone might wrong. I am currently on holiday and only have a macbook, a cable and my phone with me.
If anyone had that issue too and knows how to fix it else than a EDL Flash, please tell me
Regards
im having the same issue too. trying fixing now
Have you tried wiping persist partition from RECOVERY or BOOTLOADER?
Edit: I would try to wipe everything and flash them back.

Phone randomly shows boot animation on custom rom

Hi everyone! I have been suffering with this problem for 2 full days on my S10 (SM-G973F/DS) and now i just have absolutely no idea how to fix it, so I thought it was worth writing about it here.
On stock, I used one old and outdated application that made user certificates system certificates, but which worked. Having tried it on EvolutionX 5.9.1 (Android 11), it brought the phone into a bootloop. I didn’t have a backup and because in order not to go through the installation process on a new one again, I decided that I would try to delete the folders from the data partition ONLY, but after half a day of attempts, nothing happened and I started to install the rom from scratch, but then weird things began to happen: after reinstallation/factory reset, boot animation randomly started (check attached video), which either went into an endless boot, or loaded the system back, but then if boot animation started on loading then this loading become endless, and the buttons (in the system) "Reboot to recovery", "Reboot to bootloader" and etc simply turning off the phone without booting into the recovery or bootloader, and if this happened, then somewhere in 2 minutes after turning it off.
I think i tried almost everything: re-installation according to the instructions, re-installation according to the way I did it before, I even tried to install the stock, and after the recovery again and then rom, but absolutely nothing changes, I cannot use custom rom if it is up to this worked fine and everything started on the same version as I was trying to install like before, I even tried to download the rom installation file again, not installing magisk-patch in boot, installing multidisabler, even find my old backup for TWRP that has every partition, but absolutely nothing changes, maybe someone knows how to fix it?
Thanks in advance!
P.S Stock rom works perfectly (android 11), but i want to use custom anyway (also android 11)

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