1. Windows Central Question's Avatar
    I understand your previous set up is preserved during a Win 10 upgrade but only for a month, that month has now expired for me so can I delete the previous Win 7 and 8.1 installs?
    09-21-2015 10:53 AM
  2. stevesu's Avatar
    It always depends on what you're trying to accomplish and do you know what you're doing...
    I upgraded a tablet for my wife that only has a 64GB hard drive, so it was pretty full when I upgraded it. Since it came from her father, I deleted his user profile and the Windows.old folder and a couple apps in Add/Remove programs and it now has enough space to be usable.
    You CAN go further than this, but is starts getting very risky.
    09-21-2015 07:13 PM
  3. UKSteve's Avatar
    Hi stevesu, thanks for the reply but what I was thinking was what I have done before, click on C drive and bring up properties on there is a button to clean up system files, which Windows does, no fiddling about for me. It takes a few minutes to gather all of these files then you get the usual pop up 'do you want to delete these files?' but as I have usually done a registry back I just go ahead and say yes. So I wasn't considering digging down in the bowels of Windows just use a facility that has been around for ages.
    09-22-2015 04:09 AM
  4. stevesu's Avatar
    You should be safe to do quite a few things, including what I mentioned above, which is more than most folks typically do.
    09-23-2015 04:04 PM

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