Powermac 7100 CD Drive problems?

2 replies [Last post]
Joined: May 11 2007
Posts: 74

My 7100 (mac os 8.1) won't read CD ROMS.
I've tried CD's I've burn with my macbook as well as audio CDs. I've got nothing.
Any thoughts? I looked and the connections seem to be good- CDs seem to spin in the drive.




Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
cwsmith's picture
Joined: Oct 13 2005
Posts: 699
Re: Powermac 7100 CD Drive problems?

Should be a pretty simple swap.

Off the top of my head, I don't remember whether the 7100 still used a SCSI CD-ROM (50 pins) or whether Apple had moved to IDE (40 pins) by that point. Open up and have a look.

I think I have one or two SCSI CD-ROM drives lying around if you need one, otherwise IDE drives are easy to find in just about any store that sells computer parts.

EDIT: A quick look in Mactracker leads me to believe the internal drives are all SCSI. Correct me if you learn otherwise after opening the case.


Dozens of Macs; a handful of PCs; Apple ][e, ][c and ][gs; a few iPods; lots of parts
17 guitars, 2 baritone guitars, alto guitar, 6 bass guitars, bajo sexto, 3 ukuleles, mandolin, banjo, sitar
3/4 scale upright bass, 4pc drum kit, congas, travel congas, bongos, cajon, cabasa, 12 harmonicas

eeun's picture
Joined: Dec 19 2003
Posts: 1891
Re: Powermac 7100 CD Drive problems?

Unless it's been upgraded, it should be a 2x SCSI CD drive. Had one in my 6100, and it was a bit picky when it came to burned CDs.
Could be just a dirty laser, could be the laser is degrading.
I've used instructions on adjusting pots on the original xbox laser head, but I wouldn't know if there's any tweaking options available for that old scsi drive, nor what numbers you'd aim for.


"Give a man a fire, he's warm for a day. Set a man on fire and he's warm for the rest of his life."
(Terry Pratchett)