Macintosh Collector’s Guide Macintosh Hard Disk 20SC Install Disk 690-5109-A

Please Feel Free To DownloadThe Pics

The Pics And The Guide Should Make

For A Pretty Useful Reference Tool

The Macintosh Hard Disk 20SC Installation Disk 690-5109-A

Contains The Application Program For Apple’s SCSI Hard Disk Drive

TheApple Hard Disk 20SCWas Apple's

First SCSI Based Hard Drive For TheMacintosh

It Was Released in September 1986 For Use With TheMacintosh Plus,

The First Mac To Include Apple's SCSI Interface.

It Was A Popular Update, Delivering Considerably

Faster Data Transfer Rates Than Its Predecessor, The Hard Disk 20.

The Hard Disk 20SC Disk Contains Version 1.0 Of The Software

Application And Features System File 3.2 and Finder 5.3.

This Particular Disk Is Listed For $500.00

Definitely An Inflated Price

However, If You Do See Another One On

Try To Scoop It Up, It’s Another Hard To Find Macintosh

Floppy And Could Command A Premium …Especially

If It's In Good Working Order

As Always .... Feel Free To Ask Questions