howdee - im a new user, but registered for just this one long/detailed comment/reply...
It started out on PowerPC processors but later transitioned onto Intel processors with Mac OS X Leopard (10.5) the last to natively support the PowerPC architecture and Snow Leopard (10.6) the last to support PowerPC applications on Intel-based Macs. All versions of Mac OS X that were made to run on PowerPC systems (with the exception of. Download Mac OS X 10.5 Leopard. Download Mac OS X 10.5 Leopard ISO File (6.61GB) Download Mac OS X 10.5 Leopard DMG File (6.41GB) Download Mac OS X 10.4 Tiger. Mac OS X 10.4 Tiger ISO File (2.64GB) Direct Download; Mac OS X 10.4 Tiger DMG File (2.64GB) Direct Download; Final Words. So, that’s all about Download Mac OS X 10.4 – 10.15. After doing a lot of research and trying out some hints, finally I could install Mac OS X 10.5 Leopard on an iMac G5 1.8 GHz, and I would like to share with you the solution that I got. This works for PowerPC Macs that don't have a Dual Layer DVD, and you wish to install Leopard using an external USB Drive instead. Download file - Mac OS X Leopard DVD 10.5.iso.zip. FAST INSTANT DOWNLOAD Download type.
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 10.5 Ppc Iso Download 64-bit
Mac Os 10.5 Ppc Iso Download Windows 10
i could use the 'UP-ARROW' to repeat the last command that id typed, so that i could just change the 'dir' to a 'boot' and add the BootX to the end and it would work... (using left- and right-arrows to leave the other good characters in place)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... :)
repeating: for me, the exact command i used was ... gl & hth, h.