'Bless' OS X system folder

[amagichnich]

Hey guys,

I encountered a very strange problem - 2 somehow 'unblessed' system folders!
I'll explain what I did, maybe you can tell me what I did wrong.
I exchanged the HDD of my 12" iBook with a SSD and installed Leopard on it. On the HDD was Tiger. After some days I decided to make it multi boot because battery is much better with Tiger on this machine so I'd have Tiger for mobile and Leopard for workstation use.
After cloning Tiger back to a second internal partition there was no more startup disk in system preferences. Shut it down and hoped there was a mistake and both OSs would be there - wrong, both gone and when selecting a partition instead of the apple logo I only see a very unpleasant circle with a line right through it...

Looks to me like an unblessed system folder, but I thought that blessing stuff didn't exist in OS X? Any suggestions on how to proceed now?

 

[weckart]

Assuming that nothing else has gone astray, boot up with an install disk and select Terminal.

bless --mount /Volumes/Macintosh\ HD/ --setBoot

Replace “Macintosh HD” with the volume name as applicable.

 

[amagichnich]

Is this right? It doesn't work

 

[weckart]

Are both volumes named differently? OS installations default to “Macintosh HD”

 

[amagichnich]

One is called Macintosh HD and the other is Macintosh Tiger - so it can't be a naming issue. Quite interesting is the fact that I get the forbidden sign even when booting from the install disc (Firewire disc). On the same disc is another partition with 10.5 Server which boots just fine. So I blessed from the server disc not the normal Leopard

 

[weckart]

There is a systemsetup command, which works similarly to bless but at this stage, I might be tempted to look at Disk Utility Repair or Disk Warrior to make sure that both volumes aren't corrupted in any way.