Disk Jockey Jr (
Disk Jockey Jr is a disk image builder that runs on the command line. It runs in macOS 12 Monterey and up.
It’s been notarized, so there won’t be any shenanigans.
You install it using the package downloadable here: djjr.zip
, or by deploying it directly from Disk Jockey (it’s in the “File” menu). The installer will place it in
djjr --help will give you the options, but here’s a quick list:
-sMallow you to specify the size of the image, either in bytes or in megabytes.
-ospecifies the name of the image to create. If you don’t specify it, your image will be named “untitled.img” or “untitled.hda”.
-dspecifies that you wish to create a device image. A full partition map and a SCSI driver (Apple HD SC Setup 7.3.5) will be installed on your image. Specify this if you wish to use your image with BlueSCSI or RaSCSI.
djjr -sM 20 -d -o "HD10_512 20MB.hda"
will create a new device image in the current directory. It will be 20 MB in size (
-sM 20) and it will contain everything it needs to work as a device (
-d). It will be named “HD10_512 20MB.hda” (
-o "HD10_512 20MB.hda").