Seen in gparted on a pc, it is standard 2 GB ext3, i never reformatted it myself.

Edit: the optfs partition is 2gb, backupmenu wants to create a +4 gb backup of the optfs, regardless of which sd card or save to mydocs, reinstalling backupmenu does not help, gparted checking does not do much. Any ideas?

Now my micro sd card is unreadable on a mac, in disk utitlity it says invalid bs-jmpboot. On linux it reads fine, yet error persists on mac after gparted check.

On the sd card it has three partitions, two for flopswap.
However, the problem persists when backup is saved to mydocs..
Strange?