LocalH, on 17 November 2012 - 04:27 PM, said:
Probably less, since you'll still have to reinstall applications, you won't need to back up the Windows or Program Files folders. I'd be surprised if you had more than 30GB of actual data and installation files that would need backing up.
Pretty much this and doing so frequently enough (as needed) makes these kind of diasters less damaging should things really go wrong in the future. Some of your user files could easily be corrupted from the 3rd party defragger and might not be noticed until you access them in the future.
System files (you never need to back this up usaully, but your system will get them back when you re-install, don't forget to install all updates and OEM drivers because the Windows ones are sometimes shit, this is easy as going to the manufacture's website for a specific peice of hardware and downloading), defrag with Windows XP defragger when you're done here, but don't add your user files yet use disk clean up utilities and clear temp folders. You should include anti-virus and anti-spyware here as I consider them system files.
Program files (the programs you use, just back up any installer you cannot redownload). Defrag again, clean up again.
User files (the stuff like your documents, music, videos, photos, etc.) Add back last, defrag one last time.
Should run fast after that if done carefully.
NOTES: Clean up before defrag. You can run the built-in XP defragger a couple of times to consilidate files a little more (it's only marginal at best but it won't defrag any better but may move files to a faster part). The more full a hard drive is the more it gets really fragmented so consider a bigger drive if this happens alot.
This post has been edited by Chibisteven: 18 November 2012 - 03:03 PM