Puzzled by Partioning

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  1. Telos
    Posts : 80
    Win10 x64
    Thread Starter
       New #11

    zbook said:
    If the Macrium backup is up to date and can be used to restore an image you can delete recovery partitions.

    Deleting the enabled recovery partition, between C: and D: (913 MB) eliminates safe mode, safe mode with command prompt, and safe mode with networking.

    There is little to be gained by deleting < 1 GB


    The 900 MB can be deleted.
    Again there is little accomplished.
    OK... so I can toss the 20GB "Restore" without issue? With this content...
    Attached Thumbnails Attached Thumbnails Puzzled by Partioning-20201125_explorer_8garktqxsh.png  
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  3. zbook
    Posts : 41,464
    windows 10 professional version 1607 build 14393.969 64 bit
       New #12

    The 20 GB partition is the unknown.
    With Minitool you can right click explore.

    Whenever Windows does not have enough room to expand a recovery partition it will create a new recovery partition during an upgrade.

    The 900 GB recovery partition can be deleted now since it is disabled.
    On its left is the EFI partition.
    On its right is the hidden reserved partition.
    So there is no benefit in this free space

    The 913 GB is the enabled recovery partition.
    On its left is C:.
    On its right is D:
    So deleting this recovery partition can add 913 GB to either C: or D:
    Performing an in place upgrade repair typically creates a new recovery partition at the end of the drive where there is unallocated space.

    If the 20 GB partition, partition 10, is deleted you can add some of the free space to partition 9, leave it as unallocated space or create the new recovery partition within the new unallocated space.
    Last edited by zbook; 25 Nov 2020 at 22:24.
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  4. Telos
    Posts : 80
    Win10 x64
    Thread Starter
       New #13

    Thank you. Very clarifying...

    Exploring the 20GB partition, I discovered a file "DONOTREPLACE.txt" whose presence prevents upgrades from over-writing the original recovery partition.
    Upgrade will not replace the on-disk recovery image if this file is present. Do not delete or modify this file.

    Build ID: 17763.1.amd64fre.rs5_release.180914-1434
    That explains the presence of old 900MB recovery partition.
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  6. zbook
    Posts : 41,464
    windows 10 professional version 1607 build 14393.969 64 bit
       New #14

    The 900 MB is a recovery partition.
    It is not a recovery image.

    When there was a Windows upgrade Windows attempted to install an enlarged recovery partition.
    There was no free space to enlarge the recovery partition so windows added a new recovery partition.
    The old recovery partition was 900 MB and the new recovery partition was 913 MB.

    The 900 MB recovery partition was automatically disabled.
    The 913 MB recovery partition was automatically enabled.
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