Can't Mount System - Nexus 5 Q&A, Help & Troubleshooting

I'm having trouble mounting the system on my Nexus 5. I initially had some trouble mounting the system when I first got the phone back in December. It took a few times to finally root the phone.
Last night, I downloaded a few Xposed Modules (nothing major, just minor tweaks) and restarted the phone. It would boot up and go to the lockscreen, but it would never progress beyond that (keeps rebooting).
I tried formatting the cache and dalvik cache. I had to reboot into recovery several times because it failed to mount anything, including the system. No dice.
I thought about trying to reflash TWRP Recovery and the Purity ROM I am on, but I can't seem to do that either in bootloader mode.
Any ideas on how to fix this?

What version of twrp are you using?

After a few hours of trial and error, I ultimately just did a Stock Rom / Unroot and downloaded/installed a new copy of TWRP, latest Purity ROM, and re-installed the ElementalX Kernel.
Everything is running smoothly now. Just have to remember to backup everything to my mac to avoid starting from scratch.

Javeline4 said:
After a few hours of trial and error, I ultimately just did a Stock Rom / Unroot and downloaded/installed a new copy of TWRP, latest Purity ROM, and re-installed the ElementalX Kernel.
Everything is running smoothly now. Just have to remember to backup everything to my mac to avoid starting from scratch.
Click to expand...
Click to collapse
I think it you probably had an old version of TWRP.

Related

[Q] phone will not boot after installing any kernel

about a week ago i updated to the newest cm10.1 nightly with gapps 4.2. after flashing those i tried to flash leankernel. my battery was low and the phone turned off when rebooting after the leankernel flash. since then i cannot flash any kernel. i have to do a battery pull to get back into cwm recovery. once in recovery i can wipe data and reinstall cm 10.1 with the standard kernel. i have tried just about every combo of wiping cache, davlik, fix permissions. still not able to flash any kernel. could it have something to do with gapps 4.2 or the phone shutting off mid flash? if so does anyone know how to repair? i already flashed back to stock and rerooted re-unlocked, etc. thanks
and to clarify , it was gapps 4.2.2
Ive found that 3.4 based kernels work with some roms and not with others.
try an older build date its likely not 3.4 based.
or, if your trying a non 3.4 kernel and it wont boot, try a 3.4 kernel.
If you're trying to flash LeanKernel, what's the zip file you're attempting to flash? Also, what are you wiping prior to flashing the kernel?
Sent from my SCH-I535 using xda app-developers app
i tried the mastamoon 3.4 kernel with no luck . the rom i amrunning is the cm-10 nightly 2013-03-24. the leankernel version i am running is lk_s3vzw_aosp_jb42-v2.9. i wipe cache then wipe davlik then flash, it always worked with that procedure before, but since the problem i have tried wiping both after along with fixing permissions. before this issue it was simple as pi, wipe cache, davlik, flash, reboot .
You could always try twrp. Ha. It would make no sense why you couldn't install a kernel.
I would assume since you went back to Odin stock. It would flash factory kernel and give you a clean slate.
So unless cwm is outdated.... ?
Sounds very weird.
actually that is another variable that i didnt think of. cwm updated from 6.0.1 to 6.0.3 or something like that. but then again the original recovery i used after the clean slate was the ez recovery which used 6.0.1 stupid question, but how does twrp work? i always used cwm. i tried flashing twrp but cwm came up when i went to recovery when i tried using twrp?! that was before i did a stock recovery so it couldnt be possible that i am running both? should i delete cwm before i use twrp? if so how? if you dont feel like going into that much detail, i can search it.
i figured out twrp. never gave it achance. ill see if that does the trick
tried twrp. still the same thing going on. gonna go to bed now. ill check back tomorrow after work to see if there are any more ideas. thanks
Problem solved. I went into my internal SD via astro and deleted all old traces of cwm as well as ez unlock and ez recovery. I was getting a generic (showed setting icon instead of regular su icon)super user screen come up prior to that, after deleting those files the regular super user came back. Rebooted into recovery via twrp , cleared cache, Davlik, flashed lean kernel and it worked. What do you think the issue was? Lingering files from ez recovery? That weird su thing?

Random Reboots

I was on CM10.1 for a very long time, and just recently decided to flash something newer. So I tried flashing Philz recovery (had CWM), then used that to flash VRUBMF1 and VRUCML1 baseband afterwards (from this thread). Without booting my phone, I then flashed CM11 and the kitkat gapps. When trying to restore apps through Titanium Backup, I got a random reboot. Since then, I would get many random reboots, most often in the middle of a Titanium Backup restore of my user apps because it's the first thing I want to do. Sometimes the phone will reboot before even getting to the app restore. I have tried flashing PAC rom (4.3--I flashed jb gapps with this) and unofficial Paranoid Android (4.4) as well, and the problem persists no matter which rom I am running. Of course, I have tried reflashing many times.
I am also trying and currently on TWRP, but this hasn't helped. Going back to CWM and trying to restore my CM10.1 backup gives me a fail error.
Before each flash, I wiped data, and rewiped cache and dalvik afterwards too. Is there a problem in my flash process? What can I do to solve this issue?

[Q] [REQUEST] Nexus 5 flashing problem

Hi mates.
So, I was running CM12 nightlies on my phone but it began to get slow and buggy.
I decided to go back to stock 4.4.4, ans then flash CM11 on dit
I did full wipe (data, system, cache, dalvik), installed stock 4.4.4 (latest official build)
Then i downloaded CM installer but couldn't get it to work.
So I used Nexus foot toolkit on PC, but the flashing process went wrong somehow, just when it reboots the phone to recovery, nothing happened, no flashing process whatsoever.
From this moment, my problem had appeared
So I rebooted normally, downloaded CM11 and I was unable to flash it. Signature check failed.
I've tried OTA 5.0.1, not working either, same error.
So I am currently running latest 4.4.4 without any problem, but even after an other full wipe I'm not able to flash anything, custom or stock. My recovery is the latest TWRP from the Google play app.
Could you please help me ? I don't mind wiping my phone, and I'd prefer a "no PC" solution but I still can use a PC if needed.
Thanks
visclo49 said:
Hi mates.
So, I was running CM12 nightlies on my phone but it began to get slow and buggy.
I decided to go back to stock 4.4.4, ans then flash CM11 on dit
I did full wipe (data, system, cache, dalvik), installed stock 4.4.4 (latest official build)
Then i downloaded CM installer but couldn't get it to work.
So I used Nexus foot toolkit on PC, but the flashing process went wrong somehow, just when it reboots the phone to recovery, nothing happened, no flashing process whatsoever.
From this moment, my problem had appeared
So I rebooted normally, downloaded CM11 and I was unable to flash it. Signature check failed.
I've tried OTA 5.0.1, not working either, same error.
So I am currently running latest 4.4.4 without any problem, but even after an other full wipe I'm not able to flash anything, custom or stock. My recovery is the latest TWRP from the Google play app.
Could you please help me ? I don't mind wiping my phone, and I'd prefer a "no PC" solution but I still can use a PC if needed.
Thanks
Click to expand...
Click to collapse
stop using toolkits, learn something for a change
http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701

I want Ivanich's CM12.1 ROM 😞.

Hello.
Recently I returned my HTC Sensation XE arranged, and seeing that it had no guarantee I decided to root it. After two days in which I almost lost the mobile after having bricked, I finally managed to unlock the bootloader (although I'm still S-ON), install the latest version of 4ext Recovery Touch and give root permissions.
What happens is that looking for an Android Lollipop ROM I saw there was only one type of ROMs developed by Ivanich, and others called UnoROMs but at the end also belonged to Ivanich. Both unofficial version of CyanogenMod 12.1.
Overall, I started to download and install CM12.1 ROM with GApps and entering in recovery, but nothing was installed. I deleted cache, dalvik, data and reset to factory, but all attempts were in vain. Or almost.
When I realized that something was wrong, I looked in the ZIP of the ROM, I entered in the "/system" folder and presto!: no sign of apps, data, or other things that I think should be to make it work, only was the 'build.prop'.
Finally I gave up and tried to install Ivanich's CM11 with the corresponding GApps, and everything was great (although WIFI, that is unusable). It turns out that this ROM itself had all the appropriate files in the '/system' folder.
I thought then that Ivanich's CM12.1 ROM would be an update of his CM11 ROM and I tried to install it with CM11 as the system at that time, and I got it, but it starts out a sign saying that I had no data on the phone and to make it work I need to reset to factory. I did it and nothing happened. The recovery remained caught in the process of reseting to factory. And so over and over again. At the end I reinstalled CM11 and tried to repeat the installation process of CM12 this time making an erased of dalvik, data, cache and factory reset (which I not did at the previous), but it didn't installed, and 5.1 GApps either. As usual.
Currently I have CM11 by Ivanich (KitKat 4.4.4) with GApps, but I can't use the phone because WIFI practically doesn't work. There is a ZIP to fix WIFI that I flashed and that was fine, but it didn't fix anything.
Please can someone explain to me why I can't install CM12.1 and 5.1 GApps and why this ROM has the '/system' folder empty. There are people that have been able to install this ROM, and I can't understand how they have succeeded.
Thanks to all who help me in advance.

Bootloop after trying flashing kernel

Hi guys. Last days I decided to try out some custom kernel with my MIUI ROM. I installed Genom kernel after having some problems installing the wrong AOSP version, but finally found the MIUI version on Telegram. When I tried to restore my backup (stock kernel) with Pitch-Black recovery, I noticed that Wifi and Bluetooth weren't working, flashing original firware fixed bluetooth but no wifi, then I had to go back to Genom kernel. Today I found a supposed MIUI stock kernel in the Genom kernel thread, but after flashing it I have bootloop. I can't wipe data, because I installed the Pitch-Black recovery from a different way, without mounting data (I didn't want to lost my data), I installed root from external storage, now I see it was a bad idea. The only thing that lasts is to install the full MIUI ROM again, but I just found the MIUI 10.3.2 for download, my device was running 10.3.3, and I'm afraid I can't install it or it to not work. Can someone give me a solution?
EDIT: I managed to wipe the Data, now I have access to internal storage, but I also wiped the system partition, so now I have no system installed. If I reboot my phone it will brick?
Tried to download the MIUI 10.3.2 firware from Xiaomi site, it has 2.5GB, but the download always fails at 2GB. I tried to install Pixel Experience ROM and Havoc-OS, both give me "Updater process ended with ERROR 7". I don't know what to do, my phone is unusable.

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