I know there's already dozens of threads with this problem but I've been going through them for three days now and I've pretty much given up trying to fix this. I'm posting here as a last resort.
All of sudden my nexus started shutting off or restarting and then it froze at the google screen, not the X logo like most people. I went into fastboot and then to recovery then tried the wipe data/factory reset option, doesn't do anything. Left it on that screen overnight and all that happened was the battery drained.
Now I'm stuck with in the android recovery screen because I kept trying to wipe it so much
E:failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E:failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E:failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E:failed to mount /cache (Invalid argument)
I've downloaded sdk files, images and toolkits. I've done commands but I can only get up to unlock bootloader because it fails. I don't know what else I can do at this point, nothing seems to work. I've watched a video of a guy doing the wipe data/factory reset and it reset in seconds so I'm very frustrated with this thing. It's only 10 months old and I can't remember if I got a warranty or not and I don't even know how long a warranty is on these anyway.
Forgot to mention a couple things. When I try to wipe it, the android is frozen unless I press the power button and volume up again. Then the blue line and the little shape in front of the android start moving. There's no text here and the text freezes on -- Wiping data... Formatting /data and I never rooted it.
I am getting this same issue. The lack of replies is concerning.
broncop3t3 said:
I am getting this same issue. The lack of replies is concerning.
Click to expand...
Click to collapse
The reason there are no replies is probably because there is no solution if people can't help they won't comment and clutter up the board with useless posts. Tell me everything you can about your situation is your bootloader unlocked? Rooted? What ROM are you on? Can you access fastboot mode? Ect and I will see if I can help
Sent from my C5303 using xda app-developers app
I was on cyanogenmod 11 4.4. I had many random reboots and was going to do a factory reset through recovery, it was freezing too much to reset through Android. I used Nexus root toolkit when I rooted/ installed CM11. Now when I try to use the toolkit I get fails and trying though recovery gets me the E: failed to mount errors.
Nexus 7 Wifi (2012)
unlocked bootloader (still shows unlocked on "google" screen
Was Rooted
I can access fastboot mode.
I tried to flash via fastboot and was unsuccessful.
Thanks for your help.
What error message do you get when you use wugfresh NRT back to stock and unroot with the option for soft bricked
Edit: It just occurred to me the most common reason for flashing failing or "failure to mount" is a corrupted nand memory, a bit like bad sectors in a hard drive.
Nand going bad could produce the spontaneous reboots and would explain why you are unable to reflash it.
The only option if that is the case is RMA or a new motherboard.
Sent from my C5303 using xda app-developers app
Related
My Verizon tab was having issues, so I used heimdall to reflash it to stock like ive done in the past. It takes it now about 5mins on the samsung screen before it goes to the verizon logo. Then it proceeds to stay in a boot loop. Getting into recovery also takes about 5mins now. Managed to get there once and I saw there was some errors in some of the logs. I think i killed my tab any suggestions?
In Recovery it says
E:Can't mount /dev/block/mmcblk0p1
E:Can't mount Cache: recovery/command
#Manual Mode#
E:Can't mount /dev/block/mmcblk0p1
(Invalid Argument)
E:Can't mount CACHE: log/recovery.log
E:Can't Open CACHE: log/recovery.log
E:Can't mount /dev/block/mmcblk0p1
(Invalid Argument)
When I try to factory reset it says
E:Can't mount /dev/block/mmcblk0p2
(invalid argument)
E:install_application_for_customer:Can't mount DATA:
your storage not prepared yet. please use UI menu for format and reboot actions
Try using heimdall to put the standard KhasMek kernel and recovery on it.
No change its just sitting on the samsung logo now
Part of the installation of KhasMek kernel involves about 3 minutes of sitting at the Samsung logo, but there should be a voice playing over the speaker letting you know what it is doing.
EDIT: Try getting back into recovery if it is still just sitting at the samsung logo, and see if it put CwM recovery on it, then you might be able to wipe data/factory reset and wipe cache. If not, then you will probably need to go into a little more detail how you "reflashed to stock" in order to get the answers you need.
Installed the KhasMek kernel had it install cwm. Was able to boot into recovery Wiped data cache, factory reset, Then restored a nandroid backup. Since then its been stuck on the samsung screen. Went back to stock originally using the pieced together verizon stock firmware. This entire problem started when I found that my tab wasnt booting after a battery drain. I turned if off one night it was acting perfectly fine and since it hasnt booted past verizon screen. Figured it might help to flash it to stock after that point.
Since it has not worked since you tried flashing to stock, I would assume that the issue was in that step but was not the kernel or recovery, and since you have done it successfully before, you might just need to try flashing to stock again. I had a link to a guide but I can't find it now, but a quick google search returned these:
/how-to-restore-verizon-galaxy-tab-back-to-stock/
and
how-restore-vzw-galaxy-tab-stock-dj11
It appears that as long as you can get to DL mode you should be able to bring it back.
Ok.... A brief description....
Nexus 7 is on..... Sometimes it's in the dock..... Sometimes it's in the case.....
All seems fine and running.....
Then.... When not in use (in the case) or sometimes charging in the dock, It just shuts down and will only restart with a loooong press on hold of the power button. In all cases, the battery is 90% > 100% charged.
Now.... I have reset the cache and factory reset a few times.... Yet the problem is still there.
Last few times, I have reset the cache and then the factory reset.... The reset of cache works fine, but if I reset the cache prior to factory reset, the factory reset shows a bunch of errors trying to access the cache....
Am I doing something incorrectly or does it have to go back to Asus for a second time?
These issues didn't start occurring until after the last system update to 4.4.2
Lego.
Legobricke said:
Ok.... A brief description....
Nexus 7 is on..... Sometimes it's in the dock..... Sometimes it's in the case.....
All seems fine and running.....
Then.... When not in use (in the case) or sometimes charging in the dock, It just shuts down and will only restart with a loooong press on hold of the power button. In all cases, the battery is 90% > 100% charged.
Now.... I have reset the cache and factory reset a few times.... Yet the problem is still there.
Last few times, I have reset the cache and then the factory reset.... The reset of cache works fine, but if I reset the cache prior to factory reset, the factory reset shows a bunch of errors trying to access the cache....
Am I doing something incorrectly or does it have to go back to Asus for a second time?
These issues didn't start occurring until after the last system update to 4.4.2
Lego.
Click to expand...
Click to collapse
Hi, Legobricke...
Legobricke said:
..
...but if I reset the cache prior to factory reset, the factory reset shows a bunch of errors trying to access the cache...
..
Click to expand...
Click to collapse
How are you resetting the cache? Do you mean clearing the cache? Are you referring to Dalvik cache? Are you doing this via a Custom Recovery (CWM or TWRP)?
What error messages do you see? Can you post a screenshot of these error messages?
Sorry for the barrage of questions... but the more information you can provide, the more likely you are to acquire a diagnosis, and a possible solution.
Rgrds,
Ged.
GedBlake said:
Hi, Legobricke...
How are you resetting the cache? Do you mean clearing the cache? Are you referring to Dalvik cache? Are you doing this via a Custom Recovery (CWM or TWRP)?
What error messages do you see? Can you post a screenshot of these error messages?
Sorry for the barrage of questions... but the more information you can provide, the more likely you are to acquire a diagnosis, and a possible solution.
Rgrds,
Ged.
Click to expand...
Click to collapse
I am clearing the Dalvik cache..... This is done in stock recovery on an unrooted Nexus 7.
I can't take a screen shot unless I do a full factory reset again... But if I remember right it was trying to access E drive and the at least on error said it could access the cache...
GedBlake said:
Hi, Legobricke...
How are you resetting the cache? Do you mean clearing the cache? Are you referring to Dalvik cache? Are you doing this via a Custom Recovery (CWM or TWRP)?
What error messages do you see? Can you post a screenshot of these error messages?
Sorry for the barrage of questions... but the more information you can provide, the more likely you are to acquire a diagnosis, and a possible solution.
Rgrds,
Ged.
Click to expand...
Click to collapse
This is what I get after clearing Dalvik and then trying a Factory Reset:
Formatting /data...
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/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: Failed closing /dev/block/platform/sdhci-tega.3/by-name/MSC (I/O error)
E: failed to mount /cache (Invalid argument)
Anyone?
Legobricke said:
This is what I get after clearing Dalvik and then trying a Factory Reset:
Formatting /data...
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/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: Failed closing /dev/block/platform/sdhci-tega.3/by-name/MSC (I/O error)
E: failed to mount /cache (Invalid argument)
Anyone?
Click to expand...
Click to collapse
Hi, Legobricke...
Apologies for not getting back to you sooner, but I've been really busy this past week with work.
And if truth be told, I've also been finding excuses not to write this post... because I hate delivering bad news. And your above quoted output, I think, is very 'bad news'.
Everything about it suggests you have either a bad eMMC/NAND chip (hardware failure)... or a partition corruption.
There is very slim possibility you **might** get your Nexus 7 working again, by fastboot flashing a Google factory stock image... but given your previous descriptions of random shutdowns, and this sort of thing...
Code:
E: Failed closing /dev/block/platform/sdhci-tega.3/by-name/MSC (I/O error)
(...and which is something I've never seen or heard of before...)
Well... I'm not optimistic fastboot flashing anything will work, to be honest.
I think your best bet, is to return it back to Asus and hope they'll fix it.
Sorry I couldn't be of more help.
Rgrds,
Ged.
Hi threre,
Yesterday, my WhatsApp kept crashing so I decided to reboot my stock Nexus 4 (4.4.4). Now my phone is stuck in a boot loop. I have access to the recovery menus.
The first thing I tried was wiping my cache. When I open the Android system recovery There is already an error on the bottom half of the screen.:
Code:
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 have tried wiping the data and cache partitions but when I do that the same errors as above fill up my entire screen and it does not help anything at all.
Next thing I tried was to flash a stock image using this thread http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312. Since I am posting here you can probably guess that this did not work as well.
The problem is that my device is not rooted, and I can not get my bootloader to stay unlocked after a reboot. I have the bootloader drivers installed on my Windows 8.1 pc using the advanced reboot method so I have access to my phone in cmd. fastboot oem unlock does seem to work at first since the "'LOCK STATE" turns to UNLOCKED, but when I do the required reboot for flashing images it turns back to locked.
Perhaps this is a symptom of a bigger cache problem?
I am definitely not a pro at this but I have some experience with rooting phones from my Samsung Galaxy S II.
I really hope that anybody knows an answer other then try you warranty plan because then I will not have my phone for 5 days or more and I am not sure whether they really can fix this...
Lastly, here is the information displayed in my fastboot screen:
Code:
FASTBOOT MODE
PRODUCT_NAME - mako
VARIANT - mako 16 GB
HW VERSION - rev_11
BOOTLOADER VERSION - MAKOZ30d
BASEBAND VERSION - M9615A-CEFWMAZM-2.0.1701.03
CARRIER INFO - None
SERIAL NUMBER - xxx wil post this if nescesarry
SIGNING - production
SECURE BOOT - enabled
LOCK STATE - locked
Thanks in advance!
If you can't lock the bootloader that is a symptom of your emmc flash memory failure. Afraid there isn't much you can do. Are you still under warranty?
Sent from my Nexus 5 using XDA Free mobile app
I still have warranty but I'm a little worried that they will complain about the damage (unrelated to the crash) of my phone. Is there no way of repairing the flash memory?
Recently, my Nexus 4 has been crashing randomly - shutting off with no warning or notice. It has always rebooted back up without issues. Last night, however, it just got stuck in a boot loop - spinning balls for hours on end.
Bootloader and Recovery Mode come up with no trouble.
The phone is and always has been pure OEM/stock. I've only ever updated using built in OTA process.
I tried to reflash to stock using Wug's Nexus Toolkit, but it repeatedly failed saying the device was locked. I tried to unlock the bootloader, but that seems to require a reboot to take hold, and every time I tried the reboot it would loop again.
In Recovery Mode, I get the following:
E:failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E:failed to mount /cache (Invalid argiument)
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​
I have downloaded the full image and tried flashing the cache, and system with no effect. Toolkit doesn't show an error, but nothing changes.
Does anyone have any suggestions? I'm at a loss.
Did you try
fastboot erase cache.img
fastboot flash cache cache.img
Then perform wipe data/factory reset before booting into android.
hey bros.
So here's the thing. I got myself into a sticky situation . My Nexus 4 got soft-bricked from the lollipop update. Im stuck at bootloop(The small colorful dots that you see when you start your nexus).
Now heres the sticky part , The Bootloader wont stay unlocked(It goes back to being locked after a reboot, even after I did it manually with Fastboot oem unlock )
And I cant do a Factory OR a Cache wipe aswell
Im getting errors like
"E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount/cache (Invalid argument)"
Im just looking for a nudge in the right direction
Any suggestions will be appreciated, help a bro out
muzamuzzu said:
hey bros.
So here's the thing. I got myself into a sticky situation . My Nexus 4 got soft-bricked from the lollipop update. Im stuck at bootloop(The small colorful dots that you see when you start your nexus).
Now heres the sticky part , The Bootloader wont stay unlocked(It goes back to being locked after a reboot, even after I did it manually with Fastboot oem unlock )
And I cant do a Factory OR a Cache wipe aswell
Im getting errors like
"E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount/cache (Invalid argument)"
Im just looking for a nudge in the right direction
Any suggestions will be appreciated, help a bro out
Click to expand...
Click to collapse
Hmm, something might be wrong with the cache partition.
So you can't unlock the bootloader, wiping cache from recovery doesn't work, fastboot obv doesn't work, and you're in a bootloop. So, is your warranty still available?
Edit: Thought of something
Try unlocking the bootloader, then, without rebooting, try flashing the factory images:
http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312
I don't exactly remember if the phone reboots automatically after unlocking the bootloader. In case it does, ignore this edit.