[Q] Zero of data formating - Android Q&A, Help & Troubleshooting

Is there an app to make sd format zero of data to delete personal media or info of an Android device? So can not be covered after selling my smartphone.

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[Q] Design flaw? Why is internal storage wiped out when flashing firmware?

I have an Samsung Galaxy S2 handphone and I feel Samsung has got this right with the design of its internal storage.
For Transformer Prime, when we need to flash firmware or we send it for servicing, all the internal storage will be wiped out. Why is there a need to wipe out internal sdcard storage?
I'm trying to understand this and also because my Transformer Prime just died and I had to send it for repair. They said that they will have no choice but to wipe up all data to do testing. All my precious pictures and videos taken the day before are gone.
For SGS2, the internal sdcard storage is treated as an 'external storage'. When you flash firmware because of sudden crash in OS or anything like that, it doesn't touch the internal sdcard, much like residing in a seperate partition or hdd in a desktop.
Why then do asus has to wipe out the internal sdcard everytime they need to factory reset? Does it reconfigure the internal partition?
We never know when the OS will crash so sometimes, daily backups might also not be enough.
I may be wrong but can someone clarify?
Thanks in advance.
Mankul said:
I have an Samsung Galaxy S2 handphone and I feel Samsung has got this right with the design of its internal storage.
For Transformer Prime, when we need to flash firmware or we send it for servicing, all the internal storage will be wiped out. Why is there a need to wipe out internal sdcard storage?
I'm trying to understand this and also because my Transformer Prime just died and I had to send it for repair. They said that they will have no choice but to wipe up all data to do testing. All my precious pictures and videos taken the day before are gone.
For SGS2, the internal sdcard storage is treated as an 'external storage'. When you flash firmware because of sudden crash in OS or anything like that, it doesn't touch the internal sdcard, much like residing in a seperate partition or hdd in a desktop.
Why then do asus has to wipe out the internal sdcard everytime they need to factory reset? Does it reconfigure the internal partition?
We never know when the OS will crash so sometimes, daily backups might also not be enough.
I may be wrong but can someone clarify?
Thanks in advance.
Click to expand...
Click to collapse
they will probably use nvflash/apx to recover it, thus all partitions will be wiped and rebuilt.
Advice for you: don't trust completely on one way of storage, always backup important stuff elsewhere.

Recovery data from internal memory erroneously formatted

As the title suggests, I performed a wipe recovery from Samsung but not knowing that both would have formatted the external memory I lost all data, including hundreds of photos that I wanted.
Is there any way to retrieve them?
velenoso84 said:
As the title suggests, I performed a wipe recovery from Samsung but not knowing that both would have formatted the external memory I lost all data, including hundreds of photos that I wanted.
Is there any way to retrieve them?
Click to expand...
Click to collapse
Try RECUVA
also use search or just look at the forum as someone fixed a similar problem in the last few days .
jje

How do I format my internal storage (Full Format)

Hey Guys,
Im selling my phone and did a factory reset and want to do a full wipe of my internal storage before selling my phone. I want to do a format where someone wont be able to download a file recovery app and look at all my photos, etc. Basically id like to find an app (and i dont care if it takes ages to run) that will fill my storage with random data and do a format.
Thanks!!!
ricochet69 said:
Hey Guys,
Im selling my phone and did a factory reset and want to do a full wipe of my internal storage before selling my phone. I want to do a format where someone wont be able to download a file recovery app and look at all my photos, etc. Basically id like to find an app (and i dont care if it takes ages to run) that will fill my storage with random data and do a format.
Thanks!!!
Click to expand...
Click to collapse
Answer was already posted HERE
​
tkalli said:
Answer was already posted HERE
​
Click to expand...
Click to collapse
ok thanks ill test it on my S2 and get back
ok i tried what you sent on, and although this does a wipe. It doesnt seem to write to all sectors to ensure the internal storage is fully wiped. I did a full wipe using CWM and then used a program called diskdigger and it was still able to pick up photos that were "deleted" from my device.
Can anyone advise an app or program that will fully wipe my internal storage (fills each sector with random data)
Any reply for Ricochet69? I am also having the same question.
yep
mount usb storage, run any eraser type programs available to you on the mounted drive (like eraser.heidi.ie). In a bind you could also encrypt it using truecrypt and choose the method that will format all areas with random data. You could also pull from /dev/random and pipe it to the card to pseudo-wipe it (something like dd if=/dev/urandom of=/dev/whateveryoursdcardmountis bs=1M)
I've found that flashing a stock rom and making a factory reset + wipe cache + wipe dalvik prior to that does the trick. Dunno if it's what you are looking for, though.
ricochet69 said:
Hey Guys,
Im selling my phone and did a factory reset and want to do a full wipe of my internal storage before selling my phone. I want to do a format where someone wont be able to download a file recovery app and look at all my photos, etc. Basically id like to find an app (and i dont care if it takes ages to run) that will fill my storage with random data and do a format.
Thanks!!!
Click to expand...
Click to collapse
Use this Android_Revolution_HD_Super_Wipe_Galaxy_S3.zip. then install new rom from external sdcard.
regards
Colin
and what about the internal memory? Is factory reset enough or not finally?
tkalli said:
Answer was already posted HERE
​
Click to expand...
Click to collapse
No, it was not.

Apps in SD card not visible after factory reset of phone?

I was trying to root my HTC One V and i unlocked the bootlocker,however that resulted in factory reset of my phone.Whenever i installed an app on my phone i always moved it to sd card via settings-->apps.I assumed that once my phone restarts after factory reset it will read the apps in the sd card but it is not so.The phone does read songs,pictures and contacts stored on my sd card and the sd card does have the folder of each app but how do i install it from the sd card?
one eplerger
The stock android move-app-to-sd does not move all app data to the sd card and some data is left on the device on purpose.
I might be wrong (since I never researched this) but I think you cannot restore those apps.
Fabur87 said:
The stock android move-app-to-sd does not move all app data to the sd card and some data is left on the device on purpose.
I might be wrong (since I never researched this) but I think you cannot restore those apps.
Click to expand...
Click to collapse
Okay
But is it possible that if i install the same app again,it reads the application settings from the sd card?Like if i download and install a game,is it possible for the game to read my score from it's folder in the sd card?
If the app is storing this kind of information (settings etc.) on the sd-card as a separate file then I would say that it is very likely that it will be able to read that data.
But not all apps store that kind of information on the sd-card (security reasons etc.).
I am not sure what happens to the parts of the app itself that are still on the sd-card though (I am talking about the app itself). I guess that the app will not care about those if it is stored in the internal storage. Moving the app to the sd card will probably overwrite the data on the sd-card. If the app stores the settings etc. in one of its own files then it might be overwritten as well.
You might want to make a backup of those files, even if you can't use the information in the end. But if they are gone they are gone.
Some really crazy idea would be to download the app, move it to the sd-card and then overwrite the files on the sd with the ones from the backup.
If android has no verification or security methods for this and there was no update to the app there might be a small change that this will work.
But I guess that the chances to get all your settings and user data back are still very slim as those are possibly not stored there.
But if you have the backup and some xda user swings by with a good idea (or more knowledge that me) you can still try that.

[Q] Low level format internal SD?

Hi, I'm probably going to be exchanging my phone today and was wondering if there is any tool to perform a low level format so that my data isn't recoverable. Thanks.

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