>I have a very old PC with a small (9 GB) hard drive. This drive is getting so full a new XP Service Pack wouldn't install because there wasn't enough space. I've added a decent size (80 GB) second drive (F:) and managed to free up enough space on the primary drive to install the SP.
>
>The drive is still so full that some programs won't install and I'd like to free up some significant space.
>
>The Windows directory is well over 4 GB. There's another 1.5 GB in Program Files.
>
>Asssuming that there is a great deal of stuff that can safely be removed, I've made complete copies on the new drive. Now I need some help on the next steps.
>
>1. What type of file can I safely delete from the C drive. I'm thinking of LOG, CAB, JAR. Are any of these safe to delete? Are there any others?
>
>2. I've set TEMP and TMP environment variables for my user profile to point to F:\tmpfiles. There are also system variables of the same name which point to the C drive. Is it safe to assume that my user profile overrides the system variables?
>
>3. What would be the effect of taking the system variables Windir and Winbootdir, both of which point to C:\Windows, and making them point to F:\Windows. Would that mean I no longer need the directories on the C drive?
>
>Any other suggestions (junking the machine is not an option at the moment) are welcome
>
>Thanks to all.............Rich

I agree with the others that the best option is to clone the old drive to the newer bigger one and increase the partition in the process. Meanwhile ccleaner.exe will do a good job of getting rid of junk you don't need. See http://www.ccleaner.com/update/?v=2.12.660&l=1033.
The SeaGate Disc Wizard is downloadable and will help you clone your drive. See www.SeaGate.com.