Using old Time Machine backup after clean install of system

I had a system crash on my G4 iBook running Leopard. Based on advice given at the Apple store genius bar, I reinstalled Leopard from an install DVD, reformatting the drive. During the system installation process I used my Time Machine backup to reinstall the former users (but nothing else). I then installed my needed applications. So far so good.
Now I'm in the situation where I have an external drive with the Time Machine backup of the pre-crash iBook, and I'm not sure how to proceed. Do I start over and do a new backup (effectively erasing all my pre-restore data)? Or can the old backup still be used, and added to? While losing the pre-restore time machine data would not be a major loss, it would be kind of nice to have.
Any suggestions? Thanks!
Dan

DanK wrote:
I had a system crash on my G4 iBook running Leopard. Based on advice given at the Apple store genius bar, I reinstalled Leopard from an install DVD, reformatting the drive. During the system installation process I used my Time Machine backup to reinstall the former users (but nothing else). I then installed my needed applications. So far so good.
You didn't want any of your settings, preferences, data, etc.? The +MIgration Assistant+ app will let you do that, for one or more users. And of course, you can use the +Star Wars+ display to restore selected items.
Now I'm in the situation where I have an external drive with the Time Machine backup of the pre-crash iBook, and I'm not sure how to proceed. Do I start over and do a new backup (effectively erasing all my pre-restore data)? Or can the old backup still be used, and added to? While losing the pre-restore time machine data would not be a major loss, it would be kind of nice to have.
Your next backup will be a full one; everything on your internal HD is considered as changed, so will be backed-up again.
If there's room for that, it will just be a large incremental backup, added to the existing ones.
If not, Time Machine will begin deleting your oldest backups, one by one, trying to make enough room for the new backup (the amount on the internal HD plus 20% for workspace). But it won't delete the latest backup -- if that's the only one left, and there still isn't enough room, the backup will fail.
If there is room, the first backup may appear to be very slow; why is not clear, but as long as it's making progress, let it run. Subsequent ones should be normal.

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Using old Time Machine backup after clean install of system

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