Yeah, I don't generally have things like that lying around. Also, I don't know how to reproduce the problem. Still not sure what caused it. I've been using my computer at least 3-6 hours per day (much more on weekends) and it's only happened twice in the past couple of months. Once I restart, the problem is fixed, so I don't think a second OS would be of use in this case. : / In fact, the only reason it's really a problem at all is that if I'm playing DF and it happens, I have no way to save my game. Is there any possible way to get the menu open and save the game without a keyboard? I don't have an external keyboard.
Isn't the current world updated continuously so that you can copy it to a backup folder via the mouse?
I've never used Linux. It sounds good in principle, but the few times I tried to get it, I could never figure out how to make it work. That was a few years back though. Is there any simple way to use it now?
These days, most work straight from the installation medium so if you just want it for emergencies you don't need to install anything.
If you want it as an option for a daily OS, hardware detection is generally good and installation easier than Windows. With the mainstream distributions you get a fairly complete system - things like drivers, codecs, flash, an office suite, multimedia stuff, image manipulation included. Everything should be done in about half an hour, no upgrade marathons or driver hunts.
On the downside, default Linux installs are usually not tweaked for laptops: Power saving features tend to be disabled, enabling them may be a little newbie-unfriendly. Certain GPU and wireless chipsets may not work out of the box although this has supposedly become quite rare.
One of the most popular versions:
http://www.ubuntu.com/download/desktopInstallation instructions applicable to most others.
Also, how much HD space does it take up? I tend not to have too much open due to always obtaining large video files (and slowly deleting them to make space). I could really use with a nice big external hard drive, but they cost money, and money is less than abundant in my life at the moment.
Varies a lot because Linux is so modular. Useful systems start at around 100MB installed, the full-featured ones can set you back 5GB.
Linux programs tend to be built on common libraries, the latter already has many of them so won't grow much even if you install a lot of seemingly heavy applications.
Linux deals with NTFS well enough that you'll probably just keep your data on the Windows partition.