Encrypted Backup on external Storage - Open Source GPL
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Tino Reichardt
Tino Reichardt - fix again problems with opening the Index file
- generate only one backup of Index, delete all other
- update 7-Zip dll files, supported methods are:
  - Brotli v.1.0.1
  - Lizard v1.0
  - LZ4 v1.8.0
  - LZ5 v1.5
  - Zstandard v1.3.2
  - and: Deflate, Deflate64, Bzip2, PPMD, LZMA, LZMA2
- removed help file and it's functions (was never really finished)
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USB-Backup is a free backup solution for creating encrypted backups to external USB media.

For the compression and the backup format itself the proven and very stable software 7-Zip is used.


  • local disks, such as the system disk C: can be backed up by using shadow copies (warning, this requires administrator privileges)
  • the use of the program is user-friendly and has been developed in cooperation with users
  • Network drives and UNC paths can also be backed up
  • Installation: no setup, just one AutoIT script (put together into one executable)
  • Security:
    • during the initial backup, a password is set - without a password, you can not back up!
    • when the external disk will be lost, a stranger can not really see what was backed up
    • only username@pc are stored plaintext, but this is used to distinguish the backups in case of emergency
    • an encrypted index is stored on the external disk, so that a restore at any time and on any computer is possible
  • to each directory, you can create exception lists
  • after a setable time, USB-Backup reminds the user to update the existing backup
  • the degree of compression and other 7-Zip parameters can be completely adapted in the USB Backup.ini
  • Automatic updates of program and help file are possible, but you can disable this also
  • the help file is currently not finished, sorry about that :(
    • you can help me with that :)


  • no stick -> no usb media plugged in
  • with stick -> some unknown media
  • reg. stick -> with plugged in registered stick


  • Hardware
    • Intel Pentium III, 500MHz, 512MB RAM, 2MB Harddisk
  • Operation System:
    • Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10
    • Windows Server 2003, Windows Server 2008, Windows Server 2012
  • Software:
    • for restoring the backups, 7-Zip Zstd is needed


  • the program does not require installation and is run under default user privileges
  • USB-Backup should be put into the Startup folder, so that it starts with windows - it is seen then in the system tray
  • the per user configuration can be found in this folder: %APPDATA%\USB-Backup


See Also