I had the same problem with booting to doc but unable to see my HD under dos. If anyone know of a trick to make dos see the HD please do reply here.
I do have a solution to this however, I just booted to dos from the hd by pushing f8. Then I just ran the dos version of partition magic. Just partition your drive under dos. (it's GUI too) Same thing with imaging it too.
For some reason, every single version of partition magic and drive image I've used have done nothing but crash in 98. On different pcs too. Drive Image won't even start. So I gave up on them. I just install it to get the dos version, and uninstalled them after I copied the dos version out. If anyone know why they keep crashing in 98, I would like to know.
ps. I imaged the doc in dos too, then I restored it using the image and it works.