Apple does not officially support updating a Disk Tools disk with the utilities installed with System 7.5 Update 2.0. There are a couple of reasons for this:
- On some older Disk Tools disks (any that shipped before the release of Drive Setup, such as the original System 7.5 Disk Tools disk), there is not enough room for the System Folder, Drive Setup 1.0.4, and Disk First Aid 7.2.2.
- The System Folders included with Disk Tools disks are significantly modified to fit on a 1.4 MB floppy disk. Because every existing modified System Folder isn't tested with every existing CPU and the newer versions of the utilities, you shouldn't assume that the newer utilities will run reliably from an existing Disk Tools disk.
Macintosh computers that ship with System 7.5.3 installed from the factory will include a Disk Tools disk or CD-ROM disc containing the latest versions of the utilities.
If you need to repair a volume with Disk First Aid or format or initialize a volume with Drive Setup or Apple HD SC Setup, you should start up from another volume (such as a second hard drive, CD, or removeable cartridge drive) running System 7.5.x (not necessarily System 7.5.3) and then run the desired utility. The utility does not have to be on the startup volume, but it cannot be on the volume that needs to be repaired, formatted, or initialized.
If you have a Power Macintosh system (including the PowerBook 500 with PPC upgrade, but excluding the Power Macintosh processor card) or any Macintosh that originially shipped with an IDE hard drive you should use Drive Setup. Otherwise, use Apple HD SC Setup.
Note: The following computers are in the Macintosh 630CD family: LC 630, Quadra 630, Performa 630, Performa 635, Performa 636, Performa 637, Performa 638, and Performa 640.
This article was published in the Information Alley on 4 April 1996.