The MK1 has two seperate IDE controllers, so following the linux device-naming convention, the name of the first harddrive on the first controller would be /dev/hda
the name of the first harddisk on the secondary controller should be /dev/hdc
On the MKII there is only one controller, so the first drive on the controller is /dev/hda and the second /dev/hdb
For software compatiblity, they probably renamed the device files /dev/hdb* to /dev/hdc* on the MKII, this way software will access the second drive always as /dev/hdc, independently of which hardware is used (MK1 or MKII)

It was a puzzle for me as people said displayserver wasn't working on their empeg, and I hadn't thought about the possibility to check for /dev/hdb and use /dev/hdc

Frank van Gestel