Partition Magic 8 changing drive letter

My computer:

Pentium 4 CPU 1.60GHz

1.5 GB of RAM

Windows XP Home

Service Pack 3

I would like to change the drive letter from H to C. Windows XP is installed on the H drive. I have would like to rename it to C. If I change it, using Partition Magic 8, will it still boot?

Thank you, Peggie