Windows 8 and 8.1 Forums


A little nervous about upgrading to 8.1

  1. #1


    Manchester, UK
    Posts : 113
    OS X / Windows 8.1 Pro / Ubuntu 13.10

    A little nervous about upgrading to 8.1


    I'm currently downloading the update now but confess to being a bit nervy as to whether I should install or not.
    I have a MacBook Pro retina and I have Windows 8 installed EFI booting (not BootCamp).
    I'm wondering about a couple of things.
    Will the upgrade realise it's an EFI install?
    Windows 8 on a Mac with EFI booting is notoriously finicky about writing and changing the BCD. I suspect a problem there.
    I also have a program installed that I cannot install again as the supplier is now closed and further activations cannot happen. I have fears for this program too.

    Decisions, decisions

      My System SpecsSystem Spec

  2. #2


    Manchester, UK
    Posts : 113
    OS X / Windows 8.1 Pro / Ubuntu 13.10


    Oh, I've been moved.

    Well that was an experience!
    Downloaded ok, installed ok then rebooted about 7 times in total.
    Tried to setup hardware 3 times.
    Tried to recover system twice.
    Rebooted 3 more times then told me it was trying to recover my previous sytem!
    It eventually told me that it couldn't update me to 8.1 due to error
    0xC1900101-0x40017

    whatever that may mean :-)

    At least it seems to have recovered Windows 8 Pro intact!
      My System SpecsSystem Spec

A little nervous about upgrading to 8.1
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