by StrikingStone » January 5th, 2012, 9:53 am
Having a full drive (less than 10% free space or worse) will cause extreme slowness on any version of Windows. If that is your case and you just want to expand, add the 1Tb drive and move (not copy) your data files to a partition on it. This presumes you have lots of data- pictures, music, video etc. and moving them will give you better than 25% free space on the primary drive. If most of your space is taken up with programs, you will need to start over on the new drive.
Whatever your choice, backup everything first. Not just a "backup" but a whole drive image. Dedicate some space (a separate partition) on the 1Tb drive for an image of your current primary drive. I don't know if there are any free programs to do this anymore, but something like Ghost or Acronis True image work well. Rest assured, backing up a nearly full drive will take a loooong time if you booted to it, but better safe than sorry.
Oakley