Odoben on Nostr: I have a script that backs up the EFI partition by writing it to an .img file via dd, ...

I have a script that backs up the EFI partition by writing it to an .img file via dd, zeroing out the unoccupied space by mounting it as loopback and filling it up with an empty file, and finally compressing it via gzip.

But sometimes it goes horribly wrong and I don't know why