General :: How To Securely Wipe Data From Phone Internal Partition
Sep 26, 2013
how to sanitize my phones' internal memory.
I have an HTC ONE, and a Samsung Galaxy S4 that I am trying to sell. I know that it's fairly easy to recover data from a wiped partition by using programs like "TenorShare Android Data Recovery", unless data has been written over them at least once.
I had taken pictures of some documents containing highly sensitive data with the phone, and would like to make sure that those documents are not recoverable by the next user.
Neither of them have the USB Mass Storage option in the settings, so I can't just use some secure wipe program.
View 5 Replies
Nov 28, 2013
I need to securely wipe any personal data on my phone and tablet.
On my Linux notebook I just zero the whole disk one or two times and reinstall the OS, with my Android devices it's a little bit more complicated.
Is there a way to securely wipe all my data, for example using fastboot?
Isn't there anything comparable to the good old
Code:
dd if=/dev/zero of=/dev/sdX
So that I can simply flash a new Android OS afterwards? Or at least for the data and cache partitions so that I just keep the OS
A method that definitely works is to just write a file to the data and cache partitions until there is no space left, but I wondered whether there is a "cleaner" solution?
View 3 Replies
View Related
Sep 12, 2012
but is the internal SD in ICS a partition or a directory on the system that pretends to be an SD card?
If it's a partition then I don't really see the benefit over an external SD - except where there is no SD slot. Obviously if it's a directory then it would grow as required...
View 5 Replies
View Related
Jan 27, 2013
Why the phone memory did not clear even i use the data wipe/factory reset... how can i clear that?
View 6 Replies
View Related
Aug 16, 2013
how to partitioning emmc to be internal memory? its 2GB size and I don't use that...
View 3 Replies
View Related
Sep 11, 2013
What galaxy s3 mandatory internal sdcard partition in cwm.
View 1 Replies
View Related
Aug 17, 2012
my internal SDCARD is corrupted and the /data partition is unusable.
My device is i9003 and it's running on MIUI at the moment. By default MIUI didn't detect my external SD or my internal SD but after editing "vold.fstab" I was able to mount the first partition of my external SDCARD as external memory and everything was good, I could finally use the camera and pretty much do everything else.
But I was still unable to mount the second partition of my external SDCARD as my internal memory which meant none of my messages could be saved and the phone would pretty much go back to factory settings after a reboot, this apparently is because the /data partition (present on the internal memory) stores all the user data such as the time, the theme I'm using, etc and not having a /data partition meant none of these settings were really saved.
Having no internal memory also means I cannot install any apps such as Link2SD.
Moving on, after many hours of googling I found out that it might not be possible to mount the internal memory using "vold.fstab" and the only way to do it could be by mounting the memory manually during init.
I want to use the second partition of my external SDCARD as internal memory, this is likely to solve all my problems and make my phone usable again.
View 9 Replies
View Related
Jul 28, 2013
i have onlt 750mb internal memory , pre installed app also 450mb , so how to increase that partiaion, can in mount this partiton to SD partition
View 2 Replies
View Related
Oct 8, 2013
I am running rooted stock Android 2.3 on LG E405 (no working 4.x ROMs exist for the device)
I have two questions:
1) What is the shell command to manually make android allow the PC to mount androids' (internal) partition as USB-drive? (I cannot think of right keywords to google this one up - )
2) How does android determine which partition is which (i.e. which one to remount for the PC when connecting in "USB storage" mode), beside vold.fstab and init.rc? On android 2.3 that info is not in "framework-res.apk", so where is it? In the partition table itself?
I had switched data partition with internal sdcard partition.
Here's how: Phone had a very small "/data" partition on /dev/block/mmcblk0p21 and large internal "/sdcard" partition on mmcblk0p20
So I reformatted mmcblk0p20 (ex-sdcard partition) into EXT4 and mmcblk0p21 (ex-data partition) into FAT32
Then I changed init.rc to mount mmcblk0p20 as /data type EXT4 and mmcblk0p21 as /sdcard type VFAT (mounting /sdcard was commented out in stock init.rc for some reason). This required modifying my boot image.
I have also set correct partition number in vold.fstab:
[#]dev_mount sdcard /mnt/sdcard auto /devices/platform/msm_sdcc.3/mmc_host[/#]
So basicly I now have a large /data partition and small internal /sdcard. I'm able install up to a gigabyte of APKs and it works fine.
However, when I connect to my PC via USB into "USB Storage" mode, the phone seems to still try to unmount what was previously sdcard partition (/dev/block/mmcblk0p20), instead of what is NOW an sdcard partition (/dev/block/mmcblk0p21) I can still send files to the phone via wi-fi and ADB, but the ability to mount it directly would be nice.
If I accidentally select "erase internal sdcard" from storage menu, that will also most likely erase what is now my /data partition, softbricking the phone. The "factory reset" option will probably only corrupt the sdcard.
View 1 Replies
View Related
Nov 21, 2013
I have done all the method of Link2sd by making partition of my sd card. But my Qmobile noir a2 internal memory still going to lower down..
why is it so i hav linked all the lib files, dalvick cache ...every time i installed a new app it takes my internal memory lower down ..
View 5 Replies
View Related
May 23, 2014
is there is any way to resize the internal system partition. because I am trying to flash a new ROM. but my system partition size is only 450mb and I need around 1gb to flash the ROM. there are different partion like data partition, system partition, cache partition etc, can I resize them a make system partition of around 1gb. my phone karbonn titanium S1.
View 9 Replies
View Related
Mar 3, 2013
I am trying to get my phone ready to sell and I would never sell a computer hard drive without writing zeros to the drive so that my data could not be recovered. I can find no way to do this with my phone.
Recovering data off of a factory reset android is extremely easy (this guy does it in like 5 minutes):(I cant post links so go to gottabemobile dot com and search for the article "Security Guru: Don't Sell Your Android Phone Until Turning it into Swiss Cheese".)
the only semi reliable way to securely erase data would be to do a whole disk overwrite or a whole disk encryption (single file deletion or free space overwrite completely fails on SSD drives).(Search Google for this paper "Reliably Erasing Data From Flash-Based Solid State Drives." This was a study done at UC San Diego.)
I realize that the newer android operating systems have encryption, but I cannot verify if it is whole disk encryption, and if it is not whole disk (encrypting all of the free space on the drive) it would be useless for files that are already deleted (or overwritten considering how wear leveling works, there can be multiple copies of the file spread out over the drive). I could do a whole disk overwrite and then load the operating system back on from download mode?
View 2 Replies
View Related
Mar 8, 2013
I have a SGS3 Clone based on MT6575. All the details about it are here .
I have 503MB /data partition
2.09GB /mnt/sdcard partition (it is internal sd card i cannot physically acces it .. its somewhere inside it ..
13.49GB /mnt/sdcard2 which is external sd card 16GB which i have partitioned for link2sd .. and this is the fat32 partition size
and 1.15 GB /data/sdext2 partition which is on external sd card which i created for link2sd it is ext4 partition ..
So the last 2 are the two partitions on my sd card .
I want to Disable altogether the Internal SD Card of 2.09GB (if that doesn't creates any problem, or if it does creates problem then i want it to be reduced to the minimum) so that all of that space is allocated to /data partition ( or whatever it is which android complains of low disk space .. )
I have red a thread here but that is with refrence to mt6577 and mine is mt6575 . and i do have its backup obtained through mtkdroid tools and i bricked it once and unbricked it as well .. ( when it was bricked it was total brick it didnt even do anything on inserting the charger)
I am attaching EBR1 EBR2 MBR and scatter file of my device which i obtained through mtkdroid root and tools and the prepared for flash with spf option in mtkdroid tools and here is the Hex dump of these files which i obtained using ubuntu.
s@s-desktop:~/Desktop/ebr$ hexdump -C -n 64 -s 0x1be MBR
000001be 00 00 00 00 05 00 00 00 20 00 00 00 00 f7 10 00 |........ .......|
000001ce 00 00 00 00 83 00 00 00 20 f7 10 00 00 00 10 00 |........ .......|
000001de 00 00 00 00 83 00 00 00 20 ff 20 00 00 00 10 00 |........ . .....|
000001ee 00 00 00 00 0b 00 00 00 20 07 31 00 ff ff ff ff |........ .1.....|
[Code] .......
View 9 Replies
View Related
Apr 18, 2010
How do you wipe the ext partition via adb?
View 7 Replies
View Related
Jul 24, 2010
What does it do exactly and how can I do it? Keep getting the adb error?
View 9 Replies
View Related
Apr 9, 2010
I'm writing an application wherein users will sometimes make orders through it. I want to give users the option to save their billing info (name, address, etc.) so that it can be quickly restored later if they want to make another order. The user will enter a password to secure the data. Obviously I can't just put this as a file on the device, as anyone can root/find the data. Is there a built-in Android method for storing secure data that is locked with a password? If not, what is a good place to start for storing this data securely using Java?
View 2 Replies
View Related
Jan 14, 2012
wiping my contacts and SMS. How do I go about recovering deleted files from internal storage (NAND)? And which files do I need if I only want to recover my contacts and sms?
attempting to recover them by following different tutorials, but no dice. Ive read an article where people were saying that if I take too long, I will not be able to recover my data.
View 8 Replies
View Related
Nov 12, 2012
I have OPTIMUS 2x and if I plan to sell it, I want to remove my personal data from it. I know that external SD cards can be formatted with different (repeating format and data overwriting techniques) but my phone has internal 16gb which has some personal data in it. I can format it but the data will still be there? How can I completely remove my data without effecting the system data.
I have a custom rom installed and cwm as well. rooted
View 4 Replies
View Related
Jan 5, 2014
I have a xperia u, which has not external SD card slot..
Data partition is MUCH bigger than what I need (I'm using 500mb of 2gb) and I want to move obb files to data partition to free some space in SD partition..
View 9 Replies
View Related
Sep 4, 2012
Just as I said in topic - I runned out of memory on my SGSII on internal and sdcard and moved some pictures to /data/myfolder by using Root Explorer, then I've accidentaly deleted it. Is there any way to get the data back?
1) I cant mount /data so it can't be visible on My Computer
2) I couildnt find any app on Market which could recover deleted files from /data partition
EDIT:
Maybe there is a way to make a FULL IMAGE of data partition so I could scan it from my PC with some software for lost files? somehow?
View 5 Replies
View Related
Nov 1, 2013
I got a notification that my filesystem start to be full, I was really surprise so I take a look to it with the shell and here is the result
root@android:/data # df /data/
Filesystem Size Used Free Blksize
/data/ 2.0 G 1.9 G 59.2M 4096
root@android:/data # busybox du -sh *
200.0kanr
336.5Mapp
[Code] .....
336M + 222M + 217M = 785M
So where is the others 1.2G ?
View 1 Replies
View Related
Apr 17, 2012
My rom bootlooped somehow, and I was forced to clear the data partition. Now I want to recover the messages and put them in the (clean) rom.
I extracted /data/data/com.android.providers.telephone/databases/mmssms.db from the nandroid backup before I cleared /data.
I tried copying these files into the rom but the messaging app doesn't show any difference. Is there a way to salvage the messages?
View 1 Replies
View Related
Jul 17, 2013
Not so long ago I flashed a custom rooted ROM. After this I realized that I forgot to save some important app configs (im history, notes). As far as I know, Android uses ext4 filesystem on its root partition. Is there a way to perform undelete or any other method to try to recover deleted files? Searching the forums gives some results of repairing data on internal storage, but I guess the user data space is meant, not the root. My device is Huawei U8850 Vision, Android version 4.1.2.
View 2 Replies
View Related
Mar 30, 2012
what exactly does a data reset do? Does reformat (a) partition(s)? If so, which? If not, which files/directories are removed; What exactly IS deleted? Second, how would I do a data reset through ADB?
My screen is basically broken. It works for a split second when first starting up (cold boot), and flickers off and doesn't turn on. Everything else works. I'm planning to resell for parts; I think I've invested way too much for this phone (screen broke before, and then got stolen, and now broken screen again). I would like to erase all data on the phone. I would normally do this through Clockwork recovery, but can't on the account of being blind due to broken screen.
I did come across this thread, but it still left me questions. Is reformatting system necessary? How would reflash my ROM via ADB? What about wiping Dalvik cache? Is dalvik stored within the cache partition?
As for the phone itself:
Samsung Galaxy S Epic 4G (Sprint)
RandomROM Thunkderhawk 3.5
USB Debugging enabled.
View 1 Replies
View Related
Oct 26, 2013
Recently a strange partition (storage area?) Appeared on my phone. it is simply called 'data' and it would seem my phone has set this as the new default app installation area. it's 3gb in size..
When I plug it into the computer, The other storage (internal and sd card) are unavailable, as is normal, but this data partition can still be accessed.
How can I transfer over this data back to internal storage (the internal storage on my droid 4 is 8gb) and set the phone to use the internal storage as the default storage space?
Phone is rooted.
View 4 Replies
View Related
Sep 29, 2013
I have a Mocordroid with scp6820a cpu rooted
First some objections:
1- The sdcard is used in vfat filesystem, move simplely /data folder to sdcard will be cause some problems
2- Copy /data to /mnt/sdcard/data will not work completly because we got some error of permission
Code:
adb shell
Code:
cp -r /data /mnt/sdcard
cp: can't create directory '/mnt/sdcard/data/misc/bluetoothd/FA:2B:B7:4E:90:59': Invalid argument
cp: can't create symlink '/mnt/sdcard/data/data/org.mariotaku.twidere/lib': Operation not permitted
cp: can't create '/mnt/sdcard/data/data/com.estrongs.android.pop/files/comm/tool_port': Operation not permitted
cp: can't create symlink '/mnt/sdcard/data/data/com.toss.removeappwidget/lib': Operation not permitted
[Code] .....
So first thing i change size of sdcard, decreasing the partition size, and add a second partition with 3 Gbytes using ext2. To do this
Unmount the sdcard in settings>storage>unmount sdcard. I need discover where is the partitions
Code:
fdisk /dev/block/mmcblk0
[Code] ....
For secure i reboot device, and umount card again. So format the second partition
Code:
mke2fs -t ext2 -m0 -b4096 /dev/block/mmcblk0p2
And reboot again. This was hopeful action that it would recognize the card. But not ...
Code:
# mkdir /mnt/sdext
mount -t ext2 /dev/block/mmcblk0p2 /mnt/sdext
mount: No such device
mount -t ext2 /dev/block/vold/179:2 /mnt/sdext
mount: No such device
In My Epic Fail I was not successful
BEFORE that I wrote i try several tentactivies, apps but i m thinking that use adb will be the more better.
What is the best way, my internal device have less than 200 MB internal, so is too little !!! Maybe i will need change fstab or init scripts.
View 6 Replies
View Related
Mar 15, 2013
is it possible to repartation the internal Storage on a i9100?
2Gb for Apps is too small.
And i not using 11GB for files
Can i modifi the Pit file with PIT Magic
I want 4 GB for Apps and 9Gb for files
View 3 Replies
View Related
Apr 22, 2014
My phone has 4GB internal ROM with below partitions:
1. mmcblk0p1 1024 ebr1
2. mmcblk0p2 10.00 MB protect_f ->EXT4
3. mmcblk0p3 10.00 MB protect_s ->EXT4
4. mmcblk0p4 750.00 MB android ->EXT4
5. mmcblk0p5 376.00 MB cache ->EXT4
6. mmcblk0p6 1.20 GB usrdata ->EXT4
7. mmcblk0p7 1.27 GB fat ->VFAT
Now, mmcblk0p7 (1.27 GB of vFAT) partition is used as sdcard1 but I also have a 8GB of mnt/sdcard partition. So, the mmcblk0p7 partition is totally useless in my phone. My questions are:
1. Can I add/merge mmcblk0p7 partition with mmcblk0p6 (/data) partition?
2. Or, Can I re-size/increase my mmcblk0p6 (/data) partition from mmcblk0p7
3. Or, Can I make the mmcblk0p7 as a swap partition like linux OS?
My Phone info:
Chip: MTK 6572
Android Version: 4.2.2
Basebad version: MOLY.WR8.W1315.MD.WG.MP.V1.P1, 2013/07/13 13:02
Kernel version: 3.4.5
View 3 Replies
View Related
Jun 10, 2012
Ok so I have a Galaxy 10.1 wifi tablet. I have it rooted with the AOKP ICS release, and my tab is encrypted. What happened is my little brother was messing around with my tablet and it has a PIN code lock screen, he botched the code too many times and now my tablet is trying to do a data wipe.
View 2 Replies
View Related
Nov 5, 2013
I am looking for a lock screen app that will wipe the device of all data if the password is entered incorrectly after a set amount of times.
View 1 Replies
View Related
