ByteRot :: Macintosh IIsi Hard Drive Replacement

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Macintosh IIsi Hard Drive Replacement

Device	Macintosh IIsi
Difficulty	Moderate
Time	5 - 15 minutes
Steps	4

This guide is by Chris Green on iFixit and is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. ByteRot mirrors it for non-commercial preservation: formatting changed and photos resized for old browsers; full-size photos and the text are on the FTP in /DOCS/REPAIR. Original guide >>

The Macintosh IIsi Uses a 50-Pin SCSI Drive, that doesn't need to be terminated while in single configuration.

Tools: Phillips #0 Screwdriver

Step 1

• Start by turning the computer around, and remove this #0 Phillips Screw.
• NOTE: There may or may not be a Phillips #0 screw here, depending on whether or not the computer has ever been serviced.

Step 2

• Now lift these two clips, and slowly pivot the case up.
• You can now seperate the top of the computer from the rest of the machine.

Step 3

• The Macintosh IIsi's hard drive is located ajacent to the ram and floppy drive.
• Start by pushing these two tabs out, and lifting the drive up.
• Then, flip the drive over, and remove the connection cables.

Step 4

• The hard drive: A Quantum ProDrive LPS, made in 1990, and surprisingly, it still works!
• This drive has an 80MB capacity, not very large by today's standards, but not bad way back then...
• Believe it or not, hard drive construction hasn't changed much in the last 20 years. Other than a few new interfaces, the form factor, 3.5" width and 4-Pin 12V/5V power connector has stayed the same.

Conclusion

To reassemble your device, follow these instructions in reverse order.

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