thomas@duteca (Thomas Okken) (01/25/91)
Newsgroups: comp.sys.mac.hardware Subject: Setting the SCSI ID of a Quantum Q250 Reply-To: thomas@duteca.et.tudelft.nl (Thomas Okken) Distribution: world I just got a 210M HD for my Mac II and used it to replace the original, Apple-supplied Quantum Q250 43M 5.25" hard disk. I'd like to mount the Quantum in an external case, but I need to be able to change its SCSI ID, which is now 0, so it will not conflict with the internal drive. I can't find any switches or such on the controller, but there is one unused 16-pin connector (male, rectangular, 2 rows of 8 pins each). Anyone know how this is done? - Thomas (thomas@duteca.et.tudelft.nl)
russotto@eng.umd.edu (Matthew T. Russotto) (01/29/91)
In article <1183@duteca2.UUCP> thomas@duteca.et.tudelft.nl (Thomas Okken) writes: > >I just got a 210M HD for my Mac II and used it to replace the original, >Apple-supplied Quantum Q250 43M 5.25" hard disk. I'd like to mount >the Quantum in an external case, but I need to be able to change its SCSI >ID, which is now 0, so it will not conflict with the internal drive. >I can't find any switches or such on the controller, but there is one >unused 16-pin connector (male, rectangular, 2 rows of 8 pins each). >Anyone know how this is done? It's not the 16 pin connector, I don't think. I recall an 8 pin jumper block on the bottom of the drive. I'm sure that the jumper positions are on the bottom of the drive, and marked 'A0' 'A1' and 'A2'. You install jumpers to change the ID number. -- Matthew T. Russotto russotto@eng.umd.edu russotto@wam.umd.edu .sig under construction, like the rest of this campus.
drg@mdaali.cancer.utexas.edu (David Gutierrez) (01/30/91)
In article <1991Jan28.192658.8779@eng.umd.edu> russotto@eng.umd.edu (Matthew T. Russotto) writes: > In article <1183@duteca2.UUCP> thomas@duteca.et.tudelft.nl (Thomas Okken) writes: > > > >I just got a 210M HD for my Mac II and used it to replace the original, > >Apple-supplied Quantum Q250 43M 5.25" hard disk. I'd like to mount > >the Quantum in an external case, but I need to be able to change its SCSI > >ID, which is now 0, so it will not conflict with the internal drive. > >I can't find any switches or such on the controller, but there is one > >unused 16-pin connector (male, rectangular, 2 rows of 8 pins each). > >Anyone know how this is done? > > It's not the 16 pin connector, I don't think. I recall an 8 pin jumper block > on the bottom of the drive. I'm sure that the jumper positions are on the > bottom of the drive, and marked 'A0' 'A1' and 'A2'. You install jumpers to > change the ID number. You are 100% correct, Matthew. I've just done this on a Quantum Q280 removed from a Mac II. I didn't use jumpers, though. The enclosure I purchased from MacTel for the drive (see my other posting today on this subject) had a pair of connectors that I placed over the pins to make them work with a SCSI selection switch on the outside of the case. These connectors protruded a bit from the drive, but the kit also included spacers to raise the drive in the enclosure enough to make it work. David Gutierrez drg@mdaali.cancer.utexas.edu "Only fools are positive." - Moe Howard