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yaboot fails with hard drive swap on g3 imac
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guruofquality
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PostPosted: Wed Jun 15, 2005 9:29 pm    Post subject: yaboot fails with hard drive swap on g3 imac Reply with quote

I just purchased a g3 imac. It previously came with mac OS 9.1 installed. I booted a gentoo cd, and using mac-disk, deleted the mac OS partitions leaving only these apple driver partitions thats mac-fdisk could not delete. I created a bootstrap, swap and root. The gentoo install completed and yaboot works. This is the good part.

I swapped the 6 gig hard disk that came with the mac with a 13 gig maxtor drive. Then I repeated the gentoo install with no problems. However, when I boot the mac, a blank screen appears. There is no yaboot boot verbose, just a blank screen flickering the mac logo. I tried this with a 10 gig western digital drive and had the same problems. I can boot from the gentoo cd again and all partition information is there and the file systems are all intact. I can also swap the original 6 gig hard disk back in and all is well.

With the 10 and 13 gig drives, there was no previous mac OS installation so I had to use mac-fdisk to initialize the partition maps. I never re-initialized the partition map on the original imac hard disk. So my best guess is that mac-fdisk is not doing something that mac OS does to the disk during setup.

Is there something obvious that I'm missing here? Please help.
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Kaamoss
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PostPosted: Wed Jun 15, 2005 10:28 pm    Post subject: Reply with quote

This may sound like a silly idea but if you have a copy of mac os 9.x lying around try throwing that on the harddrive first and then repeat what you did on the 6 gig drive. If you don't have a copy just download it, ownership of the mac inherintly entitles you to ownership of the os and since they no longer sell it I'm sure they don't care. Good luck.
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JoseJX
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PostPosted: Wed Jun 15, 2005 11:08 pm    Post subject: Reply with quote

Those disk driver partitions are used only by OS9 and can be removed by creating a clean Mac partition table on the disk (it's an option in mac-fdisk). I did some googling and found out that there is an 8GB partition limit for the root partition on these machines, otherwise you'll get the same symptoms as you listed. Sorry! I'll add this to the PPC-FAQ and the install guide.

References:
http://ubuntuforums.org/archive/index.php/t-22431.html
http://www.ehmac.ca/archive/index.php/t-23984.html

Good luck!
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guruofquality
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PostPosted: Wed Jun 15, 2005 11:09 pm    Post subject: non mac solution Reply with quote

I had thought of doing that and I even downloaded mac OS 9.1. The cd drive on the imac is so bad that it skips around when reading and sounds kind of clunky. However, its not dead yet and can slowly boot a gentoo cd. But if I try to boot mac OS 9.1 cd, the cd will boot after 10 mins or so... and if I try to begin the installer it will fail because the IO read is so slow.

So I can probably buy a cd drive for my imac off ebay. But I wanted to find a mac OS free way to get it running since the gentoo cd will boot. This seems like something that should work unless everyone that has installed gentoo on an imac has used a hard drive that had some remains of mac OS on it.
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guruofquality
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PostPosted: Wed Jun 15, 2005 11:15 pm    Post subject: 8 gig Reply with quote

Ok as a test, i re-initialized the partition table and set the size as 7.2 gigs as a test. The root partition is set to 6.7 gigs. I did stage 3 install, yaboot no boot. I used yabootconfig, there are no errors. Why oh why?
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