Recommended hard drive for katana dev unit

It seems my katana unit's hard drive has finally died, as only the debug adapter is recognized by the PC and the last thing GD workshop told me was that there was an error to do with the FAT system on the drive...

Seeing as it can't be detected I can't really reformat it, I'm going to try taking the unit apart and connecting the drive directly, if it uses the same scsi connectors as I have for the actual unit itself.
But what hard drives can I use to replace it?

The unit seems stuck in emulation mode and I can hear the hard drive power up when the unit powers up, but it will hang at the Dreamcast logo trying to load the last project on boot.

EDIT: (This might have been better in the repair and conservation forum...)

 

You can open it up and make sure the SCSI connection from the drive hasn't come loose on the sub board it connects to. Seems to be a common issue.

Also you can get a 2.5" SATA to 3.5" SCSI enclosure that will allow you to use modern drives. The enclosures are 200-300$ but finding a suitable SCSI drive will be very expensive anyways and at least you could reuse the enclosure if the SATA drive dies on down the road.

Check out the old katana threads on here for specifics of what drives will work.

 

Going to go through those again, the original hard drive is certainly more expensive than I would like.

Is there any way to force a dev unit out of emulation mode without using the PC tools? The drive seemed to have stopped working while a project was being prepared for emulation, so the drive will probably be stuck with a broken mounted project which might not be helping. I would also like to at least be able to run disks for now...

The drive spins up and the green led on it will start flickering when the unit gets to the bios screen.
I took it apart and the cables seem to be securely attached.

 

Turns out the hard drive was just stuck with a broken mounted project, causing the unit to hang and my PC unable to see it on boot. I connected the hard drive directly to the internal SCSI port on my Adaptec 2940u SCSI PCI card and could see the contents. I then reformatted it and it now works again.

 

Use a 50pin scsi to 80 pin adapter works great and drives are much cheap 80 pin scsi.