These are destuctive methods and so will wipe all data off. Simply install Windows on one disc nad during the installation you'll be given the existing partitions and asked if you want to use these. If you say no you can then delete the old partitions and create new ones. After doing this you can transfer as many files as you wish to keep from the second drive and then use Disk Management which can be found from Administrive Tools | Computer Management Create a small partition 1.5 - 2 GB for the swap file on the second drive. To move the swap file go to Control Panel | System | Advanced tab. Under Performance click Settings go to Advanced tab and under Virtual memory click Change and set [Partition created for swap file] Select Custom size and set Initial and Maximum size to the size of your swap partition. That is both set to the same size. Click Set. Close out and restart.