

Be careful the Finder might name it ".imgx.dmg" and Hide the last extension. Making a OSX Disk image intended for OS9 Disk Copy 6.5b13 means you probably ought to rename its extension to ".imgx" to distinguish it being for OS9 and uncompressed, that is not your regular.

I wouldn't trust Classic mode Disk Copy (any version) for making new images, Classic mode is for read-only testing. OS9 Disk Copy both v6.5b13 and v6.3.3 can be tested in OSX Classic mode to verify how they each handle image mounting, but some operations can conflict with the OSX Disk Utility during Classic mode. Whipping up a 10.3.5 partition in order to make some disk images is no biggie for me, and since OS9 software is relatively small by today's activity, being uncompressed isn't wasteful and loads faster anyway using modern storage filetransfer rates.

Since 10.3.9 added a limitation to image size (about 10GB) then I say this requires 10.3.8 or older. dmg file, file has to have been created by OSX 10.3.9 or less, AND, be not compressed ("read-only"). * for OS9 Disk Copy v6.5b13 to be able to open the OSX.

Recall that OS9 lacks "protective memory" so that when it comes to generating disk image files (back-ups! really) then to avoid backing-up inside OS9, using OSX instead, is a noble goal. But Toast appears to be without checksums. **6.5b13 also can open some ".toast" images that 6.3.3 won't. Without this, making a disk image that can be opened within both OS9 and OSX meant using OS9 to make a ".img" file, or maybe some versions of "Toast", I haven't used Toast. The main thing 6.5b13 does that 6.3.3 doesn't is *mount certain disk image files that were created in OSX Disk Utility. v6.5b13 (1,577,216 bytes filesize) was compiled on 2002 Jan 22 and could contain 3 years worth of tuneups that are actually well tested. OS9 Disk Copy stopped being updated by Apple in 1999 at version 6.3.3, but for years I've been testing the unreleased "beta" version 6.5b13 that has been found on and I see no reason not to ditch v6.3.3 putting v6.5b13 in its place. For Mac OS9, this software has a three-piece spread, Drive Setup, Disk Copy, and Disk First Aid. You know "Disk Utility" in OSX, but in the earliest incarnations of OSX (<= 10.2.8) Disk Utility is found in two pieces, Disk Copy and Disk Utility.
