/usr/lib/grub/x86_64-efi/partmap.lst is in grub-efi-amd64-bin 2.02~beta2-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | part_acorn
part_amiga
part_apple
part_bsd
part_dfly
part_dvh
part_gpt
part_msdos
part_plan
part_sun
part_sunpc
|