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What is the difference between Ubuntu and Live CD's?
basically linux comes 3 different ways.
1. install version
2. live cd or dvd version
3. live cd/dvd with option to install
ubuntu is a live cd with an install option.
QUOTE
when you use a live cd, how do you go back to windows? do you take out the live cd while you're still using it, or do you restart and remove the cd while the bios is loading or something?
you shutdown the same way you would with windows. you log out and select shutdown or reboot. linux will go thru its shutdown routine and then eject your cd rom disc or prompt you to remove it. do not remove the disc while it's running unless you are prompted to do so. with some distros (puppy) it is safe to remove the disc because it is entirely loaded into ram. also some distros may not eject or prompt you to remove the disc. it will simply shutdown. you will have to open your cd rom as soon as you restart and remove the disc to allow windows to boot or you will start booting back into the distro.
hth
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There are several flavors of Live Linux.
hey acklan, there are hundreds of different flavors of live cd's, loooool.

but you knew that right? looool
i think i have just about all of them,

i even have japanese and spanish and polish versions.

try using one of those if you know the language or even if you don't know the language.

they're interesting. i'm about to boot up the new berry release to have a look around. the english flavor that is, me no speak japanese. loooooool.