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    Drive 1 shouldn’t have any partitions while trying to install it
    – Ramhound
    Commented Aug 2, 2022 at 12:15
  • @Ramhound The initial install attempt is onto Unallocated Space - images 1 and 2. The Windows installer creates the partitions on Drive 1. Following this the machine is rebooted and installation is run on Drive 1 Partition 3.
    – Scottmeup
    Commented Aug 2, 2022 at 12:18
  • @Ramhound MBR is the problem, not unallocated space vs. partitions. Commented Aug 2, 2022 at 14:50
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    I do not understand how anyone could’ve arrived at the conclusion you’re looking at a MBR table. Please take another look. Primary does not imply MBR. MBR2GPT is not required, because a system is not installed. // In the meantime, OP, I suggest you do what the error says and look at the setup log file. While the setup is running, you can find them in X:\Windows\Panther. You can access a Command Prompt using Shift+F10.
    – Daniel B
    Commented Aug 2, 2022 at 21:40
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    Hm unfortunately it’s not entirely clear what the state was when Setup started. It appears the partitions already existed? That’s not ideal. I recommend doing the following: Remove/disconnect all other drives but the one you want to install on. Delete all partitions from this drive so you only have a single “Unallocated” entry. Then install there. If that does not work, provide the logs from that attempt.
    – Daniel B
    Commented Aug 3, 2022 at 7:24