To stop gdm (and X in the process):
This should bring you to a text console (just a guess), and from here you can log in and install the driver.Code:sudo /etc/init.d/gdm stop
Those are rather general instructions, and I'm sure someone running Ubuntu could be more specific.Code:sudo /etc/init.d/gdm start
You are trying to install the nvidia driver to the LiveCD? Good luck there
The way I see it, you have 3 options.
a) Burn the ISO of your choice into a CD. Boot from the CD and install Ubuntu to your USB stick (it will see it just as a regular hard drive!). You can then boot from it and install drivers etc to it. The only bad thing here, is the wear and tear on the USB stick obviously. For a few weeks that shouldn't be hugely an issue, but something to keep in mind. If your stick is less then 4G though; this will be hard.
b) Boot from the stick as you did, and install to a nother stick
c) Boot from the LiveCD (or a nother stick) and use the ubuntu usb creator from there. Why? because from the usb creator, you can tell it that you want a modifiable USB installtion! (with reserved space etc). Booting with that created stick, you can then install nvidia drivers etc!
If you know how to use virtual machines, you can use that to create your USB stick aswell then again, you could just boot virtualbox and use ubuntu from there
Yeah, that's definitely something to keep in mind... even if you can accomplish installing the drivers (or anything else) on to the LiveCD/LiveUSB, it's not going to be permanent unless you use a persistent image or just install plain ol' Ubuntu on the USB drive as Oliver mentioned. That is a good way to kill your flash drive, though, and I'd recommend an external harddrive or something if at all possible.
Or... Install it in your windows partition with WUBI . It's pretty common way to taste linux if you don't want to mess your partition. Start your computer in windows mode, then stick your usb, and double click the wubi.exe. And I think you'll figure out the others step yourself
I never saw that somebody managed to kill a flash drive just by using it. More likely that you lose it or that you destroy it in another physical way.
Btw. if you only want to use live mode then you can use Kanotix as well using the gfx=on option to get nvidia on the fly. you should use a tool that writes the image 1:1 onto the usb key. test version here:
it is not yet recommended to install a wheezy based image when gfxoverlay was used, it works fine with squeeze based ones. But for live mode it should not matter. gfxoverlay for fglrx does not work for wheezy.
There you find instructions for all os:
Swap on flash is too slow, never use that. Also best add noatime to /etc/fstab for the / partition (usually you dont use 2 partitions just 1).