Issue with HDD when booting

[dawei]

I have an issue -- the HDD is formatted to FAT32 -- it's 500 GB. I have the DreamShell loaded on the hard drive at the top of the directory. When I turn on the dreamcast, I get this message: FATFS: Error 5 in mounting logical drive 0. Could not mount device as fatfs.

I took the hard drive out and reformatted and same issue. Any ideas?

[SWAT]

You need make primary partition, seems you have logical partition on HDD.
Remove all partitions and make one primary.

[fanhais]

I have this error on my custom bios says error 5 and i ve solder other cables and use other gdrom can someone help me ?

[SWAT]

It's not a hardware issue, this is wrong MBR.