Installing Ubuntu? How easy to go back to Tiger?

[hictio]

I have a doubt regarding installing Ubuntu (either 8.04 or 8.10) on a PowerBook G4.
I'm pretty sure the answer will "no", but I'd like double check :D

1. I'd like to install Ubuntu, by wiping the whole HDD, and using it for Ubuntu. Provided I have a Tiger Retail DVD, will I be able to re-install Tiger later, right? With Disk Utility during the install?

2. I have seeing, testing it with the Live CD, that in order to get the wireless adapter running, Ubuntu tries to install a firmware. Would that firmware cripple in any way the future use of the wireless adapter if I install Tiger again?

As usual, TIA :D

[tiresia]

I have a doubt regarding installing Ubuntu (either 8.04 or 8.10) on a PowerBook G4.
I'm pretty sure the answer will "no", but I'd like double check :D

1. I'd like to install Ubuntu, by wiping the whole HDD, and using it for Ubuntu. Provided I have a Tiger Retail DVD, will I be able to re-install Tiger later, right? With Disk Utility during the install?

2. I have seeing, testing it with the Live CD, that in order to get the wireless adapter running, Ubuntu tries to install a firmware. Would that firmware cripple in any way the future use of the wireless adapter if I install Tiger again?

As usual, TIA :D

1. YES
2. NO

Any GNU/Linux OS is installed just on the HD. It does not modify any part of the firmware.

[mkvnmtr]

It is no problem to reinstall the mac os and in the prosess delete Ubuntu completely. Under Ubuntu just put the first mac disk in and when yaboot comes up press c. It will boot from the disk and you can install. The firmware that Ubuntu wants to down load is just for your wireless and will not affect any thing after you reinstall mac.
O would recomend a dual boot. It is easy to do and you will have the mac os to fall back on if you have a problem in Ubuntu.

[hictio]

Thanks a lot for the replies.
Installing 8.10 from the Alt CD on a 12" PowerBook while I type this :D

Personally, I really hat double boot systems, always had, it is one of those things, I guess...