If I install Windows 7 in one partition, will it erase other data partition I have?

Question

I have my OS on one partition and my data on another, on the same drive.

1. If I install Windows 7 on the OS partition, will it erase the data partition? I'm guessing not, but this isn't something I want to risk.

2. Also, how would it treat/what should I do about the XP install currently occupying it?

3. How much OS partition space will Win7 suck down? The partition is 100 GB.

Answer 1

1. No, it will not erase the data partition, but it's always good practice to backup your data before doing anything.

2. Windows 7 will replace XP totally.

3. A clean Windows 7 installation takes up slightly less than 5GB.