Data loss but not completely. - Nexus S Q&A, Help & Troubleshooting

Hi,
Few days back, my phone started randomly rebooting and it got stuck on boot. When I checked logcat, I got some fatal error in java. I tried fix_permissions and all but nothing seemed to work, so I just restored a recent Nandroid backup. However, in attempts to fix the issue, I must rebooted around 50-60 times. So, anyway, the problem was fixed. This was 3 days back.
Today I check the photos, and I see only 30-40 photos are remaining of around 500-600 photos which I had. I've done a thorough search on my phone but they haven't been moved anywhere else. AFAIK, if there is a data loss, it should take down everything not just selective items, no?
Is there any solution to this problem? I don't want to have all those 1 year's worth of photos gone.
Can I use 'dd' to make an image and mount it as ext and run ext data recovery tools? Or is there anything else I can do? Would really appreciate some help here.
Thanks

Also, what is the partition mounted as in Nexus S, ext or fat?

FAT32, so it retains compatibility with all OS.
And no, you're not right. If there is data loss, it doesn't necessarily mean you will lose everything at once. The memory can be partially corrupted either by a physical problem with the chip(s) itself or the connections or by a software problem.

Related

Data lost from Storage Card

I have a very wierd problem with my storage card.
The last I recall. I was deleting a picture from the HTC album.
The next thing was all data in the storage card is missing.
The folders were all missing except for the DCIM folder.
On checking the disc space. It seems the files were all still there.
I even unhide all files however still not visible.
Anyone any idea wat to do?
Could it be the storage card is damage? Anyway to retrieve my files?
As far as I know, there is some programs, which restore files on on storage card. I had data lost about 3 months ago. To the best of my memory, I used Pocket Mechanic. Also you may try connect your device as USB-flash and try to restore data using programs for recover files from flash drives.
Good luck =)
x_coRe_x said:
As far as I know, there is some programs, which restore files on on storage card. I had data lost about 3 months ago. To the best of my memory, I used Pocket Mechanic. Also you may try connect your device as USB-flash and try to restore data using programs for recover files from flash drives.
Good luck =)
Click to expand...
Click to collapse
Thanks you.
hi,
i have my cruise for 1 year now, and i also had encountered storage card data loss 2 times this month. with 2 different SDHC cards, 4Go and 8Go.
never happened before, i can't understand why now. (ROM M-AMINE).
a friend of mine who's got his cruise with genuine rom from htc had the same probleme last month.
when this happens, the only folder remaining in the card is "inbox.000xx" that's all. the thing is some hidden data still using space when you check on a laptop.
i could recover most of the pictures with a dedicated software.
i can't trust this phone anymore, so i will change soon.
cheers.
data loss and phone crashes due to SPB software
I've had similar problems with folders disappearing randomly and file corruption on the SD card. I'm guessing that the file system on the SD card gets corrupted due to the crashes.
I've nailed down the issue to Spb Wireless Monitor, since uninstalling this software my phone is a lot more stable and no data loss from the sdhc memory card. May want to give this a try.
This question has been asked a few dozen times, and the answer keeps coming back to the HTC encryption and how bad it is. TURN IT OFF it can not be trusted and it is on by default. Its not even worth explaining why it is so bad and the causes behind it.. just disabled it and forgetaboutit!
Hi,newbie question guys,how do i turn off the htc encription?
Start->settings->encryption
Obviously, my phone had never this encryption on...
If you have explaination other than the dozen you're talking about, i'm really interrested.
ciao
Thx silverpal
I'm having the same problem. Just turned off and will see. I hope that's it. Already bought new microSD...., nevermind.
I turn off encription and the problem continued, actually figured out that can't be turned off...

Random Reboots (OG shield tablet)

Hi
Can't remember whether or not this has been asked and answered, but here goes...
Shield tablet
5.1.1
Non-root
For the past 2 months or so I've been plagued with random reboots ( up to 2-3 times a day)
I've tried to
wipe cache 2 times
delete a whole bunch of apps
Change power settings
I have NOT YET tried to do a full wipe, due to the fact that I've got waaaay to many apps that don't sync data with google so it would be a major hassle to fix settings, copy data out and so on.... But am looking at backup solutions that include DATA ( helium)
I haven't been able to ascertain pattern.
Any suggestions on what I can do , or for that mater any way to find out why the hell it restarts.
Thanks in advance!
D
That's strange. So just reboots, no shutdowns?
I can only assume, maybe a rogue app with reboot access.
Just reboots
And It seems totally random.... everywhere from 4 times a day to non... Load dosen't seem to matter . From netflix and web to plain and simple spotify. It's driving me up one wall and down the other... can't figure it out, and really don't want to factory reset
Any form for event viewer or something that I can take a look at?
Worst part is I use it to take work notes and on a few occasions it's died (rebooted) on me in the middle of notetaking... starting to really mess with things ... and yes I know, do a factory reset, and I will if I run out of options. But my fear is that after I reinstall all the apps I'm back to square one, and it all starts all over again.
Maybe hibernating all non stock apps with Greenify could solve the riddle; if it's indeed a software issue. Once the problem ceased, activate one app at a time till the reboot bug reoccurs..
Hi
Sry for the slow reply
Been testing the Greenify for about 2 days and the same is still happening. I've more or less put all non stuck apps into hibernating list.. and run it every so often, as well as activated the hibernate at screen off. And it still happens... wish there was an event log or something that could point me in the right direction.
That's too bad. What if it is malware? I'd say make a factory reset. Stay clear of non stock apps and watch and see. If it still reboots, it must be a hardware issue. You still have warranty, aye?
Nope warranty is out, I think. I mean 2 year but got it back in 2014 at some point.
A damn it, was hoping to id the damn offending app and fix it without having to factory reset....
No one knows of any event / log feature in android ( akin to event viewer in windows)...??
I just read on Amazon that someone had the same issue inconsistent reboots and the culprit was a micro SD card.
Do you have on inside your Shield?
I had this problem like 3 months ago. When tablet was charging the led indicator was blinking on green an orange. The problem was that the cable from battery was connected bad, I just had to connect it with solder. (My tablet is replaced )
Niii4 said:
I just read on Amazon that someone had the same issue inconsistent reboots and the culprit was a micro SD card.
Do you have on inside your Shield?
Click to expand...
Click to collapse
Yeah, I do have an NTFS formated sd card installed...
Do you know of any easy way to check...or even better fix it?
Replace the SD card with another one or don't use one for now. You can still backup via USB or WiFi.
It may be a incompatible issue or a damaged SD card.
Backup via usb? As in copy paste the content of the SD card?
I have a lot of apps on the SD card, and not enough space on local storage to move back to tablet ....
Was hoping for some software based diagnostic or test to check the sdcard
Yes, you can copy n paste. Or save new data on a new SD card etc.
I presume there are Android SD card checker apps. But I think that won't help if it's an incompatible issue. Anyway, unmounting the current SD card won't erase its data. It's the sour apple you've to try.
Just somehow experienced the same.
Android 7.0 - no root no anything.
It's weird. Now it rebooted with 1% and then died. Before it just rebooted around 40%. Anyone found a solution?
Thanks

S8+ factory reset, wiped micro SD card

Hi all, I have had my S8+ for several months now, everything was fine until this morning when I woke up to unlock my phone, it unlocked as per normal. I enabled wifi and opened google chrome and checked the weather. The, the phone shutdown and within a few seconds the blue screen appeared with a message (erasing). It took a while for the phone to boot up and go through the initial setup like a brand new phone.
Now, all the data on the phone and my 32GB micro SD card are gone. I have tried half a dozen recovery software on my PC but none can see any files on the micro SD.
I have no idea what happened and why it has wiped the micro SD card. I have lost images and videos of the last few years, I know silly not to have them backed up.
Any help will be greatly appreciated.
Wow, that is a great disappointment losing all that personal info. I suspect you are running a recovery software app from a PC or a Mac? If you are not getting any meaningful results from the data restore apps, and you know those apps to be of good/high reputation, then I am wondering of your phone uses a type of 'wipe' function that performs a military/DOD sort of erase?
If that is the case, that stuff is likely gone forever. If that is not the case, hopefully you can find another app to try and restore your stuff.
Now, on the other note, that's an odd behavior for your phone to just reboot and do it's thing, wiping your system. Do you have any type of security going where it might have thought the phone had been stolen, and performed a wipe as protection for the owner. . . (you)?
Good luck.
I do have company email on my phone and I have agreed to their security policy which wipes all your data. This could be one of the reason, however could they erase data from SD card?
I had over 60GB of personal files on it and I thought the SD card will not get wiped in any case.
I have been reading around but can't find any solution. Stuffed to the max.
gunner007dc said:
You can check the phone's memory - sometimes it has a "SD RESTORE" folder if it backed up anything.
By chance is this a company phone, or had a company e-mail on it? Sometimes those e-mails require device administrator and can be remotely wiped.
Click to expand...
Click to collapse
Good info.
gunner007dc said:
You can check the phone's memory - sometimes it has a "SD RESTORE" folder if it backed up anything.
By chance is this a company phone, or had a company e-mail on it? Sometimes those e-mails require device administrator and can be remotely wiped.
Click to expand...
Click to collapse
Thanks, where would I find this folder? I have checked by can't find it.

Data recovery mystery (from HTC One M7 / micro sd card)

Hey folks,
Bit of a long story, short version is "Phone seems wiped, did I mess up? If not how is it possible?"
I've been passed a device with a report that it had an important video file on it that was accidentally deleted, and tasked with seeing if the file was recoverable. I was also later passed the only SD card (2gb) in the owner's possession.
Phone first. I followed instructions to root the device and rip an image of the data partition. This did mean uploading the root zip to the phone, a risk I undertook before discovering you can get a temporary root. I don't think that act accounts for what I found.
I used these two [1] [2] links for guidance. Ripping the data took many attempts but I did eventually get a 32gb-ish image down the wire. The image seemed to mostly be zeroes viewed in hex editor. Video-wise, recovery software found only operating system background videos of clouds. There didn't seem to be any user data on there at all. Recovery seemed to run very quickly with image stored on an SSD. As I say, even if I'd overwritten the video file header with the root zip, there'd have been other data on there, seems to me. Other photos. Other videos. Perhaps I ripped it wrong. Ripped on a windows machine. Is ripped even the right word, I'm not very good at this and a bit stressed
Did I get the wrong partition? Wouldn't be 32gb then though, right? I ripped mmcblk0 and mmcblk0p37 or whatever seemed to be mounted as the data partition, various times, and got similar results regardless of the resultant file size (i.e. stop half way through, data is mostly zeroes, get the whole image, it's mostly zeroes, all ripped images contain the OS video files).
Did rooting / flashing recovery wipe the data? Seems unlikely. I did start the phone by accident at one point (reboot from recovery seemed not to acknowledge my holding down the volume / power combo to get back into recovery) and OS claimed to be "upgrading all the apps" so I powered it down straight away. This is the terrifying moment for me, did something I do kick off an OS process that wiped the phone?
Owner claims never to have done a factory reset, and in any case that doesn't wipe data anyway right? Only file table. So data would still be there. But like I say they don't claim to have wiped phone, only accidentally deleted files. Even automatic OS upgrade would leave data intact. Flashing a mod would do it I guess but that's not happened.
SD card next, it's labelled "BLACKBERRY" and owner did have a bb once. They say the card was in the phone, I figured maybe phone was using sdcard instead of internal memory for user data but the card is essentially blank, it's like it has never been used since it was formatted by the blackberry. No data on it, just 6 folders. Recovery software finds literally nothing. Seems like a dead end. Ripped on a mac using dd.
Possible that the owner had another sdcard at some point but they cannot recall having one.
Also possible I ripped the data wrong? I used sudo dd to get it, then ran Disk Drill on the mounted .dmg, which is 2gb, the size of the sd card.
dd would not substitute zeroes for unallocated filetable areas, right?
So this leaves me with so many questions about how we got to this point with no data, but mainly I want to sanity check what I've done here so I can be more confident I haven't wiped the data I'm trying to recover myself. Then it'll be a case of digging deeper into what happened to this phone between the video being taken, the video being deleted, and the phone arriving in my hands.
Thanks in advance to anyone for literally any input!!
I've asked the owner to trawl their cloud drives for HTC backups, hopefully they had daily backup linked to one of their clouds. Otherwise, I guess I'm at a loss...
If the lost data cannot be scanned by the recovery tool, they has been overwritten. But fortunately, the owner to cloud drives for HTC has backup file.
Thanks bobii. What's confusing is that the data I retrieved seems mostly to be zeroes, which wouldn't be the case if it had been overwritten. Unless it was overwritten with zeroes, which as far as I know would only happen if you flashed a brand new OS or intentionally wiped the data partition, both processes I think that the owner would remember doing.

Samsung Galaxy S7 Boot loop

Well, this is rather vexing.
I've been hard at work trying to backup / transfer data from my extremely old Samsung Galaxy S5 that seems to be coming to the end of it's useful lifespan. The S7 was next, but aside from running out of internal storage, I thought I still had time on that one (I wasn't experiencing a lot of slowdown or any crashes).
I went out for a couple hours (taking my newer phone), and when I came back, I saw my S7 on the insert the pin code screen. When I put the correct pin code in, the "unlocked padlock" stays on the screen for ages, before the phone restarts and I am shown the pin screen again (if I insert the wrong pin, it says so, so I am sure that I am not inserting the wrong pin).
So for the first time in my life, I am dealing with a spontaneous boot loop. This device has never been rooted, had a custom recovery installed or even the bootloader unlocked (it's the Exynos version, so presumably it would have been possible, but I decided that I wanted *one* unrooted device just in case, and given Knox, I decided that this was the device that will remain unmodded).
Anyway, that's for the story, but the question is, is there anything that I can try before the nuclear option (factory reset etc.).
Fortunately most of the photos are on the MicroSD. There are perhaps two or three apps that I would have liked to backup (they did not have a convenient built-in backup system) but I am just wondering if there is anything I might be able to do at this point? For instance, would wiping the cache be an option? Or is there anything I might be able to do with adb?
(Note: The device is running on Android 7)
Thanks.
Don't set security passwords for device access as you are the one most likely to be locked out.
If the boot loop wasn't caused by a hardware failure it's likely a app you loaded. Launchers and power management apps are prime candidates. Leave at least a couple gb of headroom on internal storage.
A factory reset is the easiest solution. Be careful what you load next time... take out the trash.
Use the SD card as a data drive, all critical data and everything you need for a reload goes here. No apps. Only apps, and the temporary download folder go on the internal memory.
The DCIM folder can be set to the SD card as well, but there can only be one DCIM folder and don't change its name. If a second backup folder is used on the SD card instead do not name it DCIM.
ApkExport can be used to make installable copies of apps for transfering them and added the data drive as well, no Playstore needed.
Do not use Kies or SmartSwitch when going between different type devices or OS versions. It can cause issues.
Cut/paste critical data, verify the data is readable and all there. Don't trust Kies or SmartSwitch with critical data.
Never clone data drives.
Never encrypt data drives.
Regularly redundantly backup the SD card data drive to at least 2 hdds that are physically and electronically isolated from each other and the PC.
Thanks for the reply.
1. No app was recently installed (past couple of weeks)
2. Hardware failure? Maybe, but it is rather out of the blue. Phone has not displayed any unusual behaviour, it hasn't been taken out of the house for a week or so (it is really in the process of getting retired). And I would like to ascertain it.
3. I am aware I can just nuke the whole thing with a factory reset, but before taking that easy option and effectively lose some data I'd like to retrieve if possible, I would like to other options.
And rather than tips on what I should've done or can do next time (much of which I am already doing), I am looking for advice on anything I might be able to try -before- nuking the whole thing.
For instance, could the log-files (there are quite a few of them) provide hint in what went wrong? Any option of re-installing the OS without wiping the data partition? Since I am on a fairly old version of Android I may also have the option of doing a minor update. That kind of things. I am thinking that there might also be the possibility that the system files somehow got corrupted and perhaps a re-install or system update might be worth trying.
I am basically looking for options that will not, for the time being erase the data partition. If it comes down to it in the end, then fine, but that is the last option not the first.
It sounds like it got spontaneously corrupted. Perhaps a flash memory cell failure. If so it may or may not be "self healing" with a factory reset or a reflash.
If you have ADB access you may be able to fix it.
Otherwise your options are limited to what's on the boot menu.
Try doing a hard reboot (simulates pulling battery).
If you try booting it a bunch of times it may go into go safe mode. I've seen that behavior in Android 9.
That's extent of my skills, sorry.
The reason why I posted how to prevent data lose is because sometimes that's all you can do.
Internal memory data I consider expendable, the SD card data... potentially expendable.

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