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That will be a topic for another day.Working with Macintosh Floppy Disks in the New MillenniumĪs time passes and floppy disks become relics of computing’s past (especially in the Macintosh world), folks seem to be confronting more problems accessing information stored on this older format. With the floppy image out of the way, I can move on to crafting an autounattend.xml that enables a newly created Windows VM to be controlled by Ansible. Either of which can be used to eject the disk: hdiutil eject /Volumes/FLOPPYROOT

The output will include the device path and the mount path. flp on MacOS, you can also do that with hdiutil: hdiutil attach floppy.flp ov: Overwrite the output file if it already existsĪnd finally, rename the file to. This option is only required if -srcfolder is specified. format UDRW: This format option creates an uncompressed image file. srcfolder : This can be omitted if you just want an empty floppy layout NONE : uses the whole disk instead of partitioning it.

Next, use the hdiutil command to create the floppy image from that folder hdiutil create -size 1440k -fs "MS-DOS FAT12" -layout NONE -srcfolder floppyroot -format UDRW -ov floppy.dmgĪ few of those hdiutil options could use some context: Here’s how you can use the MacOS terminal command line to create floppy disk images from scratch.įirst, create a folder containing the contents of the floppy disk you are about to create.

As it turns out, hdiutil can create them, it’s just not very well documented. What I needed was a scriptable method to create virtual floppy images and inject files without using a helper VM to do it. That method was much too interactive as I tested and iterated on my autounattend.xml file. After all, thats what VMware says to do in kb1002195. flp extension, attach it to a VM, and then format it from inside the VM. flp images is to make an empty file with a. The best of the bad ideas on the whiteboard was to use a virtual floppy disk. Recently, I needed to inject an autounattend.xml file into a windows VM so I could bring up a Windows instance from scratch with Ansible. The floppy disk may be obsolete in the real world, but sometimes you still need to add one to a virtual machine.