A high performance free space eraser.
- Typically when you delete a file it is not really deleted, it is merely removed from the file system's index.
- A free space eraser tool such as this one fills the remaining space of your drive with random noise files and then deletes them.
- This process makes deleted files for the most part irrecoverable.
- On some file systems, deleted file names can still be accessible in backup index databases.
- By creating many tens or hundreds of thousands of empty files with different random names you can push out the old files.
- This process makes deleted file names for the most part irrecoverable.
- Android KitKit 4.4.4 and higher
- Before selling your device
- After enabling encryption
- After deleting many apps/files
- To maintain good data hygiene
- Do not overuse this tool
- Excessive use will destroy your NAND flash storage
- Ensure important files are backed up before use
- (Optional) Delete unnecessary files, clear histories, clear app cache, factory reset, etc.
- Launch the app
- (Optional) Change the erase options from the menu
- Click "Start" on either storage location
- The status of drives are shown via the status label and progress bar
- The list is ranked roughly by how "secure" the output is
- If you want a super quick erase use "Zeroes", but be warned that it might not do anything due to various factors (flash, cache, compression, etc.)
- If you want a quick erase use "Random"
- If you want a quick but more secure erase use "CMWC4096RNG"
- If you want a cryptographically secure, but very slow erase use "SecureRandom"
- On devices without real external storage, the two shown are both internal
- The file table of the secondary drive will never really be filled
- The last 20MB aren't erased
- Due to how flash drives work and the partition layout of Android devices, it'll never be possible to fully fill the drive
- Better GUI
- Add a fast csprng data source
- Root support for filling /cache and /system
- Root support for fstrim'ing partitions
- Be fast
- Don't eat batteries
- Use minimal permissions
- Use libraries only when necessary
- Library: Uncommons Maths, License: Apache 2.0, https://maths.uncommons.org
- Icons: Google/Android/AOSP, License: Apache 2.0, https://google.github.io/material-design-icons/
- Chinese (Simplified): 大王叫我来巡山
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- German: js-xda, thereisnoanderson
- Greek: Dimitris Vagiakakos
- Norwegian Bokmål: Even Bull-Tornøe
- Portuguese (Brazil): lucasmz-dev
- Portuguese: inkhorn
- Russian: Andrey, yurtpage
- Spanish: gallegonovato
