howdee - im a new user, but registered for just this one long/detailed comment/reply...
I need to re-install OS X Leopard on a computer that has broken DVD Drive. Also I don't have firewire cable. So I created a.dmg file from the install disc and then copy that on a usb drive using SuperDuper. When I check my startup disks from preferences I can see the usb drive so I select it and click restart. DVD-less Snow Leopard installation on older Mac. (likely called Mac OS X Install DVD.dmg). Now drag the mounted key drive to the Destination field. The Mac will boot into the Snow Leopard. Jan 29, 2018 Download Mac OS X Leopard DVD 10.5 ISO is the latest version which includes general operating system fixes that enhance the stability, compatibility and security of your Mac. There are many improvements and fixes in Mac OS X 10.5 Leopard Onstall DVD – Full ISO Image (update) including to Address Book, AirPort, Client management, iChat, Graphics, Mail, MobileMe, Networking, Printing.
0 - THANK YOU to all who came before on this hint/thread/comment... i am just standing on top of the giants before and adding my little comments for others...
1 - i could not make a windows-keyboard work... in particular, my imac (g5) would 'ask' about it when powering up by having me press the key 'just inside of shift key' on each side... thus, i was never able to make the keyboard-combo work correctly... if you cannot get into open-firmware, then try getting a normal MAC-keyboard...
2 - i was having all sorts of problems trying to get the correct device to use for the 'dir' command... i could see the tree of information, but could never make a working 'devalias' for myself... two clues:
3 - i was finally able to get things working better by doing/trying the following (details removed for hopeful-clarity):
Mac Os X 10.5 Leopard Install Dvd Dmg Windows 7
4 - once i got my magic incantation correct, it took prolly an hour to get thru the first-boot - but eventually i got the great happy-mac sound from the other room... hopefully you will be able to too... :)