So with some probing with the dsk extension on a non-checksummed Disk Copy 6(?)* image:

The macOS man page documentation for open covers that.įor more information on how macOS associates what with what (tl dr, the plists found within indexed macOS apps):įortunately usage of Spotlight hasn't changed much since Snow Leopard, so it's not as difficult to find documentation on this as it used to be. You can also use a different app's bundle identifier to 'open' with another app, if you wish. That also affects what app is used when you use 'open' on the command line. Mana:~ nglevin$ mdls -name kMDItemContentTypeTree /Users/nglevin/Downloads/DiskTools85_PPC.img Mana:~ nglevin$ mdls -name kMDItemContentType /Users/nglevin/Downloads/DiskTools85_PPC.img You can probe into the identifiers macOS uses with one of the Spotlight command line tools, mdls. LaunchServices on macOS treats the Uniform Type Identifiers (UTIs) it has associated for a given file or folder extension as its source of truth. It's read-only, but even so this method is still a million times easier than screwing around with Mini vMac and ExportFL just to transfer some old files onto a modern system.ĭid everyone else already know this, and I'm just utterly clueless? That would be embarrassing.Įdit: it also looks like you can open raw HFS disk images from the command line, with no file renaming necessary. After that you can just double-click the disk image to open it:

IMG in order to make OSX 10.13 recognize it. The trick is that you must rename the file to. DSK filename extension, and are used with emulation tools like Floppy Emu and Mini vMac. These are the disk images that typically have a.

Current versions of OSX (at least 10.13 High Sierra that I'm running) are able to mount and open classic Mac HFS disk images! I had thought this capability was removed in OSX 10.7, and I guess it was for Disk Copy 4.2 disk images, but raw HFS disk images still work just fine. I just stumbled onto something that surprised me, but I'm not sure if it's common knowledge.

How to copy a mac disk image