Support external USB drives as backup target in Home Assistant OS

It would be very helpful if Home Assistant OS could automatically detect and support external USB drives as a destination for backups or media storage – directly integrated into the native backup system.

Currently, external drives require manual mounting, shell commands, or third-party add-ons to be usable for backups, which is too technical for many users.

Feature request:

  • Automatic detection and mounting of supported USB drives (NTFS, exFAT, ext4, etc.)
  • Ability to choose an external drive as a backup destination in the UI
  • Option to store backups directly to the USB drive

This would greatly improve usability, make backup storage more flexible, and reduce reliance on internal storage or cloud uploads.

Thanks a lot for the amazing work on Home Assistant!