I have a 1TB external that I've used to backup my Mac for the past year using Time Machine. Unfortunately, my hard drive is getting close to full, and I'd like to move some of the stuff off of my Mac onto the same external drive. The problem is that the external drive is already full with my Time Machine Backups. I'd like to partition 750GB to the Time Machine Backups, and save the other 250GB for personal use. Is there any way I can go about this without corrupting my current backups? I'm willing to delete some of the older backups if necessary; again I'm just worried about corrupting the data.