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Q&A Is it wise to delete C: (containing Program Files) on an old hard drive, to create space to backup more files?

I'm asking just for Windows. My old laptop died, and I removed its hard drive ("HD"). Now I'm using this as a backup HD. I partitioned it into C and D, because C contains all the "Program Files" an...

2 answers  ·  posted 3y ago by TextKit‭  ·  last activity 3y ago by Vorgon Spacecadet‭

#3: Post edited by user avatar Alexei‭ · 2021-05-23T09:21:03Z (almost 3 years ago)
added relevant tag
Is it wise to delete C: (containing Program Files) on an old hard drive, to create space to backup more files?
  • I'm asking just for Windows. My old laptop died, and I removed its hard drive ("HD"). Now I'm using this as a backup HD. I partitioned it into C and D, because C contains all the "Program Files" and Windows files. I kept all personal files on drive D that I already copied and pasted to my new HD on my new laptop.
  • Assume that I already re-installed all Program Files on the old computer, in the new computer, so that I don't need the .exe's on C in the old HD. I'm thinking of deleting C, so that I can free up space to back up more files.
  • 1. Is deleting C on the old HD smart? What do I lose by deleting C on the old HD?
  • 2. If I install this old HD into a new computer, can the new computer immediately operate on this old HD? I'm guessing the answer is no? I heard that you can't just reuse C drives on a new computer – even if your old HD ran perfectly on your old computer – you must re-install Windows and all the software?
  • I'm asking just for Windows. My old laptop died, and I removed its hard drive ("HD"). Now I'm using this as a backup HD. I partitioned it into C and D, because C contains all the "Program Files" and Windows files. I kept all personal files on drive D that I already copied and pasted to my new HD on my new laptop.
  • Assume that I already re-installed all Program Files on the old computer, in the new computer, so that I don't need the .exe's on C in the old HD. I'm thinking of deleting C, so that I can free up space to back up more files.
  • 1. Is deleting C on the old HD smart? What do I lose by deleting C on the old HD?
  • 2. If I install this old HD into a new computer, can the new computer immediately operate on this old HD? I'm guessing the answer is no? I heard that you can't just reuse C drives on a new computer – even if your old HD ran perfectly on your old computer – you must re-install Windows and all the software?
#2: Post edited by user avatar Monica Cellio‭ · 2021-05-14T02:10:02Z (almost 3 years ago)
#1: Initial revision by user avatar TextKit‭ · 2021-05-13T20:35:24Z (almost 3 years ago)
Is it wise to delete C: (containing Program Files) on an old hard drive, to create space to backup more files?
I'm asking just for Windows. My old laptop died, and I removed its hard drive ("HD"). Now I'm using this as a backup HD. I partitioned it into C and D, because C contains all the "Program Files" and Windows files.  I kept all personal files on drive D that I already copied and pasted to my new HD on my new laptop. 

 Assume that I already re-installed all Program Files on the old computer, in the new computer, so that I don't need the .exe's on C in the old HD. I'm thinking of deleting C, so that I can free up space to back up more files. 


1. Is deleting C on the old HD smart? What do I lose by deleting C on the old HD?

2. If I install this old HD into a new computer, can the new computer immediately operate on this old HD? I'm guessing the answer is no? I heard that you can't just reuse C drives on a new computer – even if your old HD ran perfectly on your old computer – you must re-install Windows and all the software?