Dietpi backup


I want to backup my dietpi. I got RPI3 and my Diet pi is on USB. I have 16gb sd card mounted and formated as ext4. I also have external disk with media files mounted on USB if that mean something.

After running dietpi-backup and set location of backup on SD card i got message “the target location appears to have insufficient free space to successfully finish the backup. Would you like to override this warning and continue wuth the backup?”

I see my USB stick where is Dietpi is 32GB and have free space 29GB. So 3 GB need to be backup. Why this warning? What to do?


many thanks for your report. What file system you specified as target location for your backup exactly?