There is the way to undo hard drive partition.You can use the tools that come with Windows and use fdisk and make it into one big drive again. However this is totally destructive and you’ll have to reload everything else again.
Otherwise there are some third party products that will do the job. Partition Magic is probably the most popular (and it’s very, very good) and it won’t zap any data.
a. Backing up all your data, files, downloads, email, etc, etc. to disk (CD or external drive if you have one) then reinstalling XP. During the reinstall you have various options that would allow you to make one large partition if that is what you wish.
b. Or keeping your second partition. It’s a good thing to do, IMHO, to have at least a second partition. It won’t help if your hard drive fails. But if something would happen to the partition to where Windows XP is installed and you’d have to reinstall Windows, then it helps a lot. If Windows bites the dust, you at least still have all your data safe on the other partition. (If you use the second partition to keep all your documents, e-mails, downloads, data, etc. In other words, just keep Windows on C, and put MyDocuments, all your installed programs, data, etc on D. (Would be a good idea if you do this to have both partitions either NTFS or FAT32.)
