DiskonModule and grub

This may be off topic or not correct list, but since it deals with small storage drives and grub so I thought I'd ask.

I have a 16MB DiskOnModule from PQI which plugs right into the IDE controller and behaves just like an IDE disk. I've partitioned it OK and mke2fs and mount, etc., and so far it works just like an IDE drive on /dev/hdd. However, I'm having problem booting from it. I've installed grub (0.90) on /dev/hdd and it says it's successful but everytime I boot from it, all I've got is "GRUB Geom error".

I realize that the DOM is probably another flash device and the geometry is not the same as a spinning IDE drive so some grub modification may be required. I see that there are some of us in this list who has done grub modification (Mark, Ilguiz, etc.) so any tip from you on how to get started would be much appreciated. Thanks.

Dzuy