Hd with 2 partitions, back to one only possible?

2 partitions in hard disk

[silverbytes]

I have HD with 2 partitions C: have SO and progs, and F has data.
I'd like to have only C using the whole disk instead.

If I use an external HD to move there all info in F, can I get back to 1 partition to have SO and software using the whole hd?

Is there a way to do so without reinstalling SO and programs? Any ideas on how to proceed?

[LifeinAsia]

It should be, depening on your OS and size of disk. Did your hard drive come partitioned, or did you use a utility to partition it? If the latter, you should be able to use the same utility. Otherwise, but a utility like Partition Magic.

[silverbytes]

It's a 40 gb hd, me or somebody did the partitions using nothing else but SO (win xp pro) now it's 2 of 20 gb each.
What should I do to make 1 partition of 40 gb?
Or I better try partition magic?

[silverbytes]

BTW C is NTFS and F is FAT32...

[LifeinAsia]

I'd go with Partition Magic, but that's my personal bias.