Mac Os Mountain Lion Iso Instant

Since Apple provides a .dmg file, you need to use the Terminal to convert it into a bootable ISO.

Open and use this command to convert Apple’s DMG into a standard ISO:

: Sites like the Macintosh Repository or Archive.org often host pre-converted .iso images for easier use in virtual machines like VirtualBox. System Requirements for OS X 10.8

(Note: The output file will actually be named .iso.cdr . Simply rename it to .iso .)