Okay, I got this old Mitsumi cdrom I tried to use with my 3000D. I plugged the CD rom in, put the centronics to 25-pin cable on the rear SCSI port, then booted it up. The HDD, the only internal device refused to boot. So, I removed the CD-rom and tried to boot the machine again, nothing... My SCSI cable has a terminator soldered onto the end of it. Now, I have reason to suspect it screwed something up. I have the prototype WD chip, buster rev7, dmac-02, I think those have everything to do with the SCSI. i even read the manual of the cd-rom, it apparently shipped with an 8bit ISA card and was for MS-DOS. The manual says nothing about SCSI or termination, merely talks about DMA and IRQ and stuff like that. That has led me to believe this is a parallel CD-rom, and it screwed something up. The computer now turns on and just sits there, I can't get to the early bootup screen (maybe because I rely on the AMBER?)

@Dreamcast270mhz

it's been a long time since i set up my a3000 external scsi cdrom and i don't remember much about it
but check out the scsi id jumbers of your hard disk and cdrom. they must have a different id.
if you can boot after this you have to set the cdrom dos driver unit number the same as the scsi id.
i think...

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