Had to do the same as Jme1222 stated..
For those on a new iMac 2011, trying to install 10.8.0 Snow leopard will cause a Kernel Panic & Crash so you need to get 10.6.8 or it won't work.. (may be the same for all new Macs??)
I had to do the following using CCLoner which is a free app for cloning your HD amongst other things.. There may have been an easier way but this was my route..
This procedure requires two external HD's one for copying your OS and another to back up your files. If you only have one external you can partition space for the clone and file backups.
I stayed away from using timemachine because I never really have much success with it plus as mentioned for this situation it woudn't really work..
On the Mac Book Pro or any other Mac pre Lion release..
- Backup your files to your backup external HD or external HD Partition
- Insert original Snow Leopard Disk
- Restart with the 'C' boot command (see here)
- Use diskutil to erase the internal HD (removing Lion) using (Mac OS Extended (Journaled))
- Continue to install Snow Leopard
- When finished update from 10.6.0 to 10.6.8 using software update
- Use diskutil to erase an external HD using (Mac OS Extended (Journaled))
- Download & install CCCloner for free
- Use CCCloner to clone the internal HD to an external HD
- CCCloner, Select Source as your internal OS HD
- CCCloner, Select Destination as your external HD
- CCCloner, Press Clone..
On the iMac 2011 i7
- Backup your files to your backup external HD or external HD Partition
- Connect external HD to iMac
- Start iMac with 'Option' boot command for start up manager (see here)
- Select external HD as boot disk
- Use diskutil to erase internal iMac HD (removing Lion) using (Mac OS Extended (Journaled))
- Use CCCloner to copy the external HD to the iMac internal HD (Application should be there from the clone above)
- CCCloner, Select Source as your external HD
- CCCloner, Select Destination as your internal iMac HD
- CCCloner, Press Clone..
- Select the internal iMac HD as the startup disk in prefrences
- Rebbot iMac
- Instal the Canon Drivers
- Test printing
- Upgrade to Lion
- Should work
- Use your external backup HD or external HD Partition to restore your original files
On the Mac Book Pro (bring this back up to date also)
- Install the Canon Drivers
- Upgrade to Lion
- Test
- Use your external backup HD or external HD Partition to restore your original files from the Mac Book Pro or whatever you used
If I didn't have my MacBook Pro i'm not sure how I would have done this..
Aprt from this taking forever the downside of this was I had two systems to rebuild after, but it all works and i'm printing without issues..
Hope this helps.. Especially if you enjoy progress bars!