[SeaBIOS] Re: Custom-sized, large floppy images?

[Mike Banon]

Rafael, please could you share a working method of expanding a floppy
from 1.44MB to i.e. 2.88MB ?

I'm back to this issue and noticed that popular Linux tools (i.e.
gparted with libparted, fatresize, etc.) weirdly do not support
resizing a FAT12 filesystem which the floppies have. Manually
increasing the number or sectors with a hexedit - 0x13/0x14 bytes from
0x0B40 to 0x1680 and 0x18 byte from 0x12 to 0x24 - also didn't work
for me (but I just learned about FAT structure and may be missing
something).