The message I get when the 2nd drive is connected up after a reboot is...
NAV AUTO PROTECT (red screen)
UNABLE TO READ CONFIG FILES
i then press enter& get
WINDOWS ERROR (BLUE SCREEN)
FILE NAME VMM (12) + 000030E3 ERROR : OE : 0028 : C02820E3
press any key
BLACK SCREEN & HANGS..
I hope that gives more of an idea.
I forgot to mention the 2nd drive is the slave & the jumpers have not been changed at all.