When creating the first partiion of a gpt filesystem using gparted, if you choose to have it unformatted it allows the choice and says it has been formatted as unallocated, but then turns out to be exfat instead. It does allow you to subsequently make it 'cleared' but I don't know if cleared status is acceptable for the MBB for an external drive intended to be booted both as legacy and as UEFI.
#Gparted initial unformatted partition switches to exfat. Can MBB be cleared instead of unformatted?
reef raptor
reef raptor
It appears there is one crucial difference between cleared and unformatted. It seems you can't flag a cleared partition but you can flag an unformatted one, as bios-grub in this case.
So what is the solution?
reef raptor
Things are getting really weird
If I create a BIOS boot partition in gdisk (ef02) everything looks fine (though gparted calls it unknown, with flags, name etc. correct). But if ANY subsequent changes are made in gparted. then gparted deletes ALL partitions and the entire partition table (it becomes "unrecognized" rather than gpt or msdos)
brittle zenith
Are you using gparted from live boot media or with the system started?