Booting headless PowerMac G5
Romain Goyet
r.goyet at gmail.com
Wed Mar 24 21:32:57 EST 2010
Hi there,
Here's a summary about "how to boot a PowerMac G5 without a screen
attached". As many people have noticed, default yaboot install won't
boot unless a screen is attached.
Actually, the workaround is really simple. Thing is, that's the
"ofboot.b" script that messes things up. This script is a "bridge",
that actually either starts yaboot or let you boot off of a CD. I
don't know what's the point, since OpenFirmware already lets you boot
off of the CD by pressing C on boot…
So basically, to boot headless, all you have to do is to tell
OpenFirmware to boot straight off the yaboot binary, and to skip the
ofboot.b
Just boot into OpenFirmware (Command-Option-O-F), and type :
setenv boot-device hd:2,yaboot (where 2 is the number of the partition
containing yaboot)
boot
And here you go, you can unplug that useless monitor :-)
References :
http://saintaardvarkthecarpeted.com/blog/archive/2005/02/THE_WINE_OF_BOOT.html
http://grub.enbug.org/TestingOnPowerPC
By the way, as of writing this, grub2 on PPC from debian gives a "out
of memory" issue. Known bug.
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