Busybox Debian commanding

[Gunnar Gervin <dofeelok@gmail.com>]

Hi.

My computer is in

grub rescue>

Crisis mode.

Busybox (ash) commands only option to recover the machine w/Debian "Buster" i386mac32b.

Tried to remove all 7 partitions in grub rescue>

(hd0,gpt1 to hd0,gpt7)

 4 partitions in ext2, 3 unknown), with Bash, but no success.

Which(in exact form)commands

Busybox command to unmount & delete "unknown" partitions?

Which commands delete th rest?

Gunnar