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I have a Emac (imac) PowerPC G4 1Gz/1GB RAM, ATI Radeon 9400 - 80GB / DVD RW+-

I have installed Ubuntu and it is running just fine.

However, the lack of flash functionality on the PPC architecture is a problem as need it for web development etc.

So, I want to roll back to OSX.

But, Ubuntu has removed some HDD partitions that apparently OSX CD/DVD's require to re-install.

Can anyone let me know what partitions are required, their type (ext4, hfa, fat etc) and sizes?

Have trawled the web and just seem to be going in circles.

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up vote 0 down vote accepted

You can erase the disk with diskutil. Answering your question, your disk should look like this:

   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *64.0 GB    disk1
   1:                        EFI                         209.7 MB   disk1s1
   2:          Apple_CoreStorage                         63.2 GB    disk1s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

Ofcourse, the sizes are according to your disk.
To erase and reinit the disk, use: diskutil eraseDisk JHFS+ name disk1

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