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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.