I have 2 disk images.  One is a VM with an ext2 boot filesystem and ext4 filesystems with the OS loaded.  I am amble to guestmount this with no issue and am able to see the files that are on the ext2 file system.

I can also run guestfish on the image, mount the ext2 filesystem, and list the files.

However, the second image I have is only a boot disk image with just an ext2 filesystem.

guestmount complains that there is no OS and won't mount.

guestfish complains "...wrong fs type, bad option, bad superblock...".

Should I be able to mount a boot disk image with guestmount?

I suspect I'll have to use the -m (mount) option and not -i (as I did for the image with an OS), but that failed too even though I passed in the fs type of ext2,

Why would I be able to mount, via guestfish, the ext2 in the first image (with other filesystems of type ext4) but not the disk image with only an ext2 filesystem?

TIA!

Lenny B.