Have a powerbook g4 that came with ubuntu 12.4 installed. Foolishly i updated to 16.4 and have not been able to run th unity gui or any other. I have spent about two weeks researching which has been very educational and have tried many things non of which have worked.

I think the problem is something to do with DISPLAY. I have learned about open firmware but cant get the machine to boot from cd or usb even though i have followed a number of tutorials. Currently I have access to 16.04 command line so can learn a lot but i would still like a gui. Can anyone help as to where i can start.restart. Click to expand.That is likely because you are not in what we usually regard as a full Terminal (console) with access to a wide range of commands. The process you are in is called 'tty', where tty is an abbreviation for teletype or teletypewriter, which you and I are old enough to have known of. Commands available to you are limited to what you find when you type help and see what is listed.

How to write a USB stick with macOS.

Can you tell us if at the top of screen it says eg tty1, tty2, or whatever? This is likely beyond my paygrade, sadly I had to Google yaboot to see that it was involved with PowerPC's. I'll give it some thought, and hope that The Cavalry will come riding in and help Cheers Wizard Edited - added BTW BTW that is why sudo update-grub will not work, it will not be in that list of commands available under tty. Click to expand.Yes, it is, it is typically accessed through a window with black background and white text, not unlike the old MS-DOS Terminals you and I might have cut our teeth on. Even has some similar commands, due to the Unix history. How to make a pendrive bootable for windows 7 in mac.

I do not know how to access it from tty, even if that can be done. I had to Google up 'yaboot' and for the benefit of The Viewers and possible helpers: - but there may be better articles, this was just from a search under 'yaboot mac' I would be inclined to try the.