You may be able to free up some valuable space if you’re using two disk partitions, using two physical drives, or dual-booting between XP and Vista on the same machine.

I’ll show you several steps you can take to eliminate duplicate files and get more out of your disks.

Decide on your multiple-partition strategy

Years ago, it was common for users seeking more reliability to divide a hard drive into two or more partitions: portions of a disk, each with a different drive letter. Back then, recovering data from drive d: was easier than from drive c: if the primary partition (containing Windows) became corrupted.

That configuration is rare today, because backup programs and disaster-recovery services have improved. But there are still three situations in which you might find yourself handling two or more partitions or physical disks: More »

My tips explained how to set up a Vista machine to dual-boot between that OS and Windows XP.

But booting to XP on a dual-boot system has the negative side-effect of deleting any Vista restore points, in addition to all but its latest backup file, and a Registry workaround is required to prevent this.

XP dual-boot is not system-restore friendly

Ian Brown was the first to describe an unfortunate fact of dual-booting XP and Vista: More »