(I borrowed my oldest son’s external CD-ROM drive for use with Macs that didn’t have CD drives.) The basic upgrade process is quite simple: Run Norton Disk Doctor on the hard drive, install Mac OS 8.1, run Disk Doctor again, and then run Norton Speed Disk. We purchased enough copies to update all of our Quadras, Power Macs, and PowerBooks. ![]() We’ve also reached the point where some current apps, including our versions of FileMaker Pro and Microsoft Word, don’t work with System 7.5.5.įortunately, we found an incredible deal on Mac OS 8.1 CDs from Small Dog Electronics – just $15 per copy. We’ve finally reached the point where we can update our entire installed base of Macs to Mac OS 8.1. We hope to be 100% PowerPC at work by mid-2000, moving our Quadras to our retail stores to replace Mac II series machines in use there. Over the past years, we’ve been slowly retiring older Macs. Today, all of the 6100s have been upgraded to 40 MB of memory, but only a handful have CD-ROM drives. Our local dealer was kind enough to pull the CD-ROM drives that we didn’t need at the time and give us a significant credit for them. The typical configuration was 16 MB of memory, whatever size hard drive Apple was providing at the moment, and no CD-ROM. These machines were mostly purchased during the first half of 1995 when we moved to a new IBM AS/400-based accounting system. ![]() Then as now, the computer we had the most of was the Power Mac 6100/66, some with DOS cards, but most without, and over two dozen 6100s in all. That was the last time we updated every Mac in the company to the same version of the Mac OS (ranging from a Mac Plus and Mac II through Power Mac 7500s and 8500s). In October 1996, Apple released the last update to System 7.5, bringing it to version 7.5.5. This was written when the I was the IT Manager at Baker Publishing. However, they can easily be adapted to almost any situation where you may be updating the Classic Mac OS. 2000 – These instructions were written specifically for installing Mac OS 8.1 on a large group of Power Mac 6100s.
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