Make backup bootable without restoring

[willO]

Thanks Dave,

The problem may be that when I bought this Intel iMac the backup on the LaCie was not recognized, which had been backed up on the old PPC iMac. So I had to completely backup again to make it recognizable in Sys Prefs Startup Disk on this Intel iMac. Fortunately there was nothing on the backup that I lost.

As far as I know the partitioning is OK. It was done via Disk Utilities on the PPC iMac.

Now here's the problem. The secondary backup volume in question exists on the LaCie (with an icon on my desktop), but in order to make it bootable I will have to get SD to back it up to itself and thus make it bootable. Is this possible?

Will, increasingly feeling stupider by the minute.