1. Joined : Jun 2015
    Posts : 4
    Windows 7 and 8.1
       30 Jul 2015 #1

    We couldn't update the system reserved partition

    The update automatically tries to install but I keep getting this. It says Windows 10 couldn't be installed. We couldn't update the system reserved partition. Several times I got error code: 8000FFFF.
    I'm trying to update a Dell Optiplex 780 with Windows 7 Pro. SP1
      My System SpecsSystem Spec

  2. Joined : Oct 2014
    Posts : 841
    Windows 8.1, Win10Pro
       18 Aug 2015 #2

    this is because your system reserved partition does not have sufficient disk space.
    NO -- it isn't. There are numerous posts in this forum about folks doing an upgrade to an existing Win7 system that has the default 100MB System Reserved partition.

    if you do a fresh install, you won't have this problem.
    Right -- and without doing the Upgrade first, they will never be able to activate their Win10 install.
      My System SpecsSystem Spec

  3. Joined : Jun 2015
    Posts : 4
    Windows 7 and 8.1
       18 Aug 2015 #3

    I downloaded the Windows 10 ISO and installed 3 computers. Two of them gave the not enough room error and wouldn't do the update, but installed fine using the ISO.
      My System SpecsSystem Spec


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