Google Nexus 5 :: Cache Messed Up - Unable To Boot Or Flash
Jul 12, 2015
Yessterday my Nexus 5 battery drained out and instead of shutting down, it tried to restart and got stuck in the startup sequence with the dots floating on the screen. I went into bootloader mode and then into recovery mode where I saw the cache errors.
E: failed to mount /cache (invalid argument)
I started to read a bit more on fixing the issue and the first solution was to flash it with the stock cache.img. However, when I unlock the OEM using fastboot oem unlock and reboot the boot-loader, it is going back to the locked state. I'm not sure if I'm going wrong somewhere but I haven't been able to flash my phone yet with the stock rom.
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Feb 2, 2016
Iknow how to flash. I do fastboot oem unlock, then I have unlocked LG, but when i flash the ROM it restarts, and adb cant flash the ROM because after reboot the device is locked again.
I can't login to ROM, its bricked so i can use only adb... cant wipe cache and partition , cant reset to factory -
It says : E: cant mount partition...
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Aug 6, 2015
I had cynogen mod installed and my phone rooted. Then all of a sudden i get a boot loop. I tried to flash but I receive an error FAILED <unable to flash write>. im able to go into recovery and boot loader. In my team win recovery in the terminal I get multiple errors saying "E:unable to mount '/data", "E:unable to mount /ata/media/TWRP/ .twrps when trying to read settings file" ,"E: No valid storage partitions found for MTP" (when i try to enable mtp), "E:unable to mount '/persist" and "E:unable to mount storage"
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Sep 18, 2015
After fully charging the phone yesterday, when I went out to get food, my phone shut down along the way and being unable to boot. My phone is running on stock 5.0 with no mods
At first, I was able to get to the colored dots loading screen but it would always get stuck there and shut off. Then I keep trying to restart it up and it got worse and worse, now I'm always stuck at the GOOGLE screen. I'm not sure if this is a boot loop issue as it just gets stuck at GOOGLE screen. I tried the recovery mode cache wipe and it gets stuck at the GOOGLE screen in the middle of the wipe.
So this morning, after fiddling around the power buttons some more, I am able to get the battery logo while charging, though it is weird that it shows 100% then completely drained the next minute or so. I try to load into the recovery mode again and this is what I see at the bottom
E: failed to mount /cache (invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (invalid argument)
I'm not sure what to do at this point, I'm still in recovery mode but don't want to push any buttons yet as it was a real struggle to get to this point as I'm always stuck at the GOOGLE screen.
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Jul 14, 2014
I now for the past hour am trying to wipe the partition cache but when I get to the last step where it shows the no command instead of it bringing me to the recovery menu it just reboots every time.
To wipe the cache partition, follow these steps:
Turn off the device.
Press and hold the Volume Up and the Volume Down and Power keys at the same time for about 10 seconds.
An image of an Android lying on its back will appear.
Press the Volume Down key twice until "Recovery mode" appears on the screen.
Press the Power key to restart in "Recovery mode."
An image of an Android with a red triangle will appear.
While holding down the Power key, tap the Volume Up key.
The Android System Recovery screen will appear. Release all keys. (But it does not appear it just reboots the device and brings me back to the lock screen every time)
Use the Volume keys to scroll to wipe data cache partition and press the Power key to select.
The phone will restart.
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Feb 20, 2015
Just a question for everyone that occasionally wipes the cache partition from recovery like I do. I'm on my 2nd replacement and after I set it all up I wiped the cache partition but for some reason it takes longer than usual for the process to finish. Usually it would be like 2 seconds where now it takes around 35-40 seconds to complete. How long does it usually take you to clear your cache?
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Oct 19, 2015
On my old HTC EVO phone, and on my Nexus 7 2012 WiFi 32GB, Clearing / Wiping the Cache Partition, is a good practice to keep the OS running smoothly.
On the N6, I haven't seen much discussion of it.
Would you do it as a regular maintenance step?
Would you do it before and/or after flashing or installing a new version of Android?
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Jul 27, 2015
Device Nexus 5(Android L 5.1.1)
My colleague was trying to unlock bootloader "fastboot oem unlock" and after that it stuck on erasing userdata for around 2 hours. Then he restart device now while flashing it says "cannot mount /cache"and few other errors.
I tried flashing Stock 5.0/5.1 nothing works (Stuck at loading screen). Then i tried Android 4.4.4 and it worded.
Now at this point in recovery mode it still says "cannot mount /cache" and few other errors. I cannot use gallery/camera/playstore. When i open gallery it says "No external Storage available".
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Dec 29, 2015
One fine day, my nexus 5 started hanging up while booting. After the google Logo, the Marshmallow animation would show up and then it would hang and power off. I have no problem in doing a factory reset/wipe of my phone. But the only thing i want to save is my contacts. I have tried erasing and re-flashing system, cache, boot and boot-loader. Using ADB, flashing the cache always fails........
However, i have not touched userdata as i think it would affect the contacts too. I have even tried using different custom recoveries such as CWM, TWRP and even Philz Touch to use adb to pull my SD card files to my PC. Even flashing the system is not working now.... (atleast that's what my results were) .
Philz touch error messages....
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
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Jun 15, 2015
I used to get the occasional reboot but on Thursday maybe from any update my phone was rebooting every 20 minutes even after clearing the cache. After Thursday it stopped rebooting and hasn't ever since.
The only other annoyance I received was camera cannot connect when I tried opening the camera app but was resolved with a reboot.
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Jan 5, 2014
Nexus 5 taken a while to wipe cache partition? It takes a good minute or 2 on the nexus 5 but on the nexus 4 it takes 2 seconds. Both are running Android 4.4.2 the nexus 5 and the nexus 4.
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Oct 20, 2015
it takes about 5 - 10 minutes to perform a wipe from Recovery, where in Lollipop and before, it was a few seconds. A couple of websites have corroborated this.what's changed in 6.0 that a cache wipe takes so long? I'm on an unrooted N5 and performed a clean factory flash (and re-locked the bootloader).
Code:
mkfs -t ext4 /dev/[device]
to
Code:
rm -rf /cache/*
Or something, I mean, even formatting a heavily encrypted partition shouldn't take that long (especially one as small as /cache).
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Dec 30, 2014
What's the difference between doing a "Clear cached data" via Settings and wiping the cache partition via Recovery mode?
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Jul 10, 2015
My device:
Nexus 5 - hammerhead D821(H) 16GB
BL version - HHZ12h
BB version M8974A-2.0.50.2.26
Secure boot enabled
lock state unlocked
Today I got a "broken" nexus 5 that is in boot loop with the google logo and it wont boot into any .img
At the start i read the pinned posts and found this tutorial: [URL] ...
followed it step by step. but unfortunately it didnt work in my situation. there werent any errors or such kind. I also tried this tutorial with other images but nothing worked.
When i go to the recovery mode and press the power button the phone get into the google logo and i can see some sort of strange stripes in like a milisecond but then it just gets into the boot loop.
i really think ive tried everything accept for relocking the bootloader but cant imaging that this could be the problem.
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Jul 23, 2015
I had been running cm 12 nightly for quite a while but wanted to try something new so I downloaded Dirty Unicorns rom and a Gapps pack. Drag and dropped both the zips into root directory, booted into cwm recovery mode, cleared everything, then installed the rom zip and then the gapps zip but it wont boot past the Google logo, I can only access recovery mode and I don't know what to do from here, is there anything I can do?
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Oct 28, 2015
updating my Nexus 5 to marshmellow has left it stuck at the boot animation. I can get into recovery and have flashed factory 5.1.1 and 4.4.4 images but all that changes is the device loops with older boot animations. Kwongger's NEXUS 5 Toolkit v2.2 completed successfully but didn't improve anything. Trying to flash Cyanogenmod I run into adb "unauthorised". The device had usb debugging enabled and the RSA key of the PC was accepted but after multiple factory resets it appears to be gone.
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Mar 19, 2015
Why does it take the Nexus so long to boot up..
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Nov 17, 2015
I have a Nexus 5, all up-to-date and stuff. Now recently when I was driving somewhere it turned off. Since then i haven't been able to turn it on again.
Without charger it doesnt even go on, With the charger it gets to the google logo and then reboots over and over again.
Fastboot just the same thing. Shows the fastboot GUI and reboots. Only with charger in.
Is this a hardware or software problem? I could try something on linux but if it's a hardware problem i'll just stop to try to find a solution.
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Nov 16, 2013
My phone shut off unexpectedly today and now won't turn back on. When I try to power it on I see the Google logo for a couple seconds and then it'll just shut off again. I tried holding the volume up/down buttons to access the bootloader, but right after I get to the screen it just restarts itself again.
Connecting to power (AC or USB) causes it to constantly reboot over and over, it just shows the Google logo for a couple seconds and then restarts again.
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Oct 29, 2015
Stuck on logo boot... I can enter recovery mod, but I cant do nothing from there it says 0 internal storage...
Pictures: [URL] ....
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Sep 30, 2015
Bought a Nexus 5 about 6 months ago USED. It has been amazing. I got the latest OTA a week ago or so, not sure if that has anything to do with current issues.
About 2 days ago started randomly restarting. Today, it shut down and has been in continuous loop restarting. I see "Google" and maybe even the boot dots loading, then it is off. Three seconds later, starts again and repeats. Never makes it all the way into Android system. I let it sit for a while and when I pick it up, without touching any buttons, it repeats all of this. I suppose it is probably dead in general, but I don't know.
Never rooted, never messed with, always been stock,....
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Sep 23, 2015
I have a Google Nexus 5, that has never been rooted.each time my phone is running out of battery (meaning nearly every day because I am using Waze, a GPS app, quite often), when Android is starting a message saying "Optimizing 1 of x.. apps" and this take a lot of time (sometimes more than 10 minutes).It happens since I upgraded to a previous version of Android but I don't remember which one as is it not the latest one.Now, my phone is running Android 5.1.1 build LMY48M.
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Feb 19, 2015
My issue is that when I take a photo on my Nexus 5 and it is under around 60% of battery it shuts down, the screen just goes black (phone is complexly off and dead) and the device will not respond to ANY input until it is plugged into a power source, then it will boot up and function normally.
This issue occurred about two weeks after I installed Android 5 however I do not believe it is related due to factory resets, different roms and the issue is still persisting. When the problem started I had recently (a week or so before) moved to Germany, my initial thoughts were that the battery was the problem as when it first happened the phone rebooted and only had 5% left even though the device had around 50% before I took the photo, from then on the battery life was terrible so I purchased a new battery and installed it.
The battery problem was solved (battery life was normal) and when the phone crashed it didn't boot up with any difference to the percentage of battery that was remaining. I am now thinking that something to do with the change in power supplies damaged the device. I think this is unlikely though as Australia (where I am from) and Germany (where I was when the issue started) both run on 240V, the stock power adapter was used just with a euro adapter. I have tried to collect logcats however I can't see any errors before it cuts off (I'm no dev by any means so I could be missing something)...
Last thing is that this issue NEVER occurs when the device is charging so I'm thinking that it is a hardware problem. And of course the phone is out of warranty.
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Nov 26, 2015
I'd there a way to quicken the time it takes to boot up the nexus 6?
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Jul 26, 2015
I recently bought a new battery for my Nexus 5 due to issues I was having with my old one. When I put the new battery in, the device gets through the boot, but begins turning off as soon as the lock screen appears. Putting the old battery back in makes the device work fine.
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Jul 9, 2015
Mine takes at least 1 minute, probably closer to 1.5 minutes. Is it normal?
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Mar 15, 2015
My Nexus 6 has random restarts about once per day. The most frustrating thing about it is that it takes 1:45 minutes (105 seconds) to reboot. It's the same length of time when I turn the phone off and boot it by hand. Is this normal? Can a few of you do me a favor and measure how long it takes on theirs?
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Jul 31, 2014
I now have my nexus 5 over 8 Months and everything worked perfectly but since yesterday it stuck at the google logo. I don't mean the Boot animation, I mean the first logo which shows up after booting. After 3 seconds it shuts down and i get the same. Before this happened I just recently flashed PA Rom (4.5,3) and then afterwards the newest franco kernel by the Updater App.
First everything has worked very well, but then some strange things happened to my nexus. So it just has switched the Date and Time to 1970, Google now said it isn't supported in my country (even it is), whats app needed reauthentification and also didn't automatically recognized my county, my battery has dropped while charging from 12% to 39% within a minute and then the random reboots appeared. after the 4th one I suddenly landed at the point where I am now. I also tried lots of things like going into bootloader/ recovery and flashing an old factory Image but every time I try to it kicks me to the Google logo.
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Dec 30, 2015
Recently, I was trying to replace old battery in my Nexus and something went wrong. The battery wasn't replaced but the phone didn't boot up. When unplugged, the phone didn't react at all (and I know that battery % was enough). When I plugged it in, the battery indicator showed up, disappeared after a second and it was happening in a constant loop (this appearing and disappearing). I tried to boot up the phone but only Google showed up and phone turned off and the battery indicator was again reappearing.
I managed to access fastboot but couldn't do anything more (when trying to enter recovery - same thing as with booting up). Flashed stock 6.0.1 and nothing changed. The phone was sent to LG but they said the warranty won't cover that and offered to replace motherboard for price around $230 which for me is a bit too high as for this quite old phone. They've sent me also this photo (URL...). Now I'm waiting for them to return the phone and maybe I'll try with another LG service.
Maybe symptoms are suggesting something and it can be easily fixed. Right now I can't do anything because the phone isn't back yet but when it's back before giving it to another service?
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Dec 20, 2015
So recently for some reason my Nexus 5 gets stuck on the booting animation. I think it was updating to 6.0.1 or something but I'm not sure, because I just woke up one day and the phone wouldn't boot, and when it finally did it just gets stuck on the boot animation. I've tried to flash stock images and etc but I need an unlocked boot loader and for some reason if the phone doesn't boot completely after unlocking the bootloader, then it gets re-locked. So now my last option is to use the stock recovery to wipe data or something but when I go to the screen with the dead android guy, no combination of buttons seem to make the recovery options show up.
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Oct 17, 2015
Yesterday I updated my Nexus 5 to android 6 via ota update notification. it seems it didn't download correctly. after a hour I power off my cellphone and after that it didnt boot again and still in page with android logo and ! red mark.
I tried to install ota update file via adb sideload but I got status 7 error.
After that I tried to solve status 7 with flash system.img's factory image file but when I type fastboot flash system system.img it still on <<waiting for device>> screen. How can I solve this problem. My datas are very important for me and I dont want to lost theme.
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