recovery partition


  1. Posts : 13,301
    Windows 10 Pro (x64) 21H2 19044.1526
       #1

    recovery partition


    A friend asked this and I didn't have an answer, mainly because I use Macrium reflect
    and image the whole drive.
    He was playing around with an Acer Desktop and deleted the recovery partition.
    His only other computer is an Hp laptop.
    Both latest Win 10 versions. The Laptop has a Fresh Clean install with oem win 10 number.

    His question is :
    Can He copy the recovery partition from the Hp and install it on the Acer?

    Using Macrium reflect this is an easy transfer but I hesitated because of the
    difference between an Acer Amd processor and a Hp Intel processor.
      My Computers


  2. Posts : 38,373
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #2

    You could

    - recover the partition using a suitable tool (typically Pro edition of a partition manager),
    E.g.
    How to Restore Deleted Partition?
    https://www.easeus.com/partition-manager-guide/partition-recovery.html


    - restore it from a disk image already created using e.g. Macrium Reflect - you both are using disk imaging I hope- so frequently recommended to you can correct mistakes easily and often have a chance to recover to a previous good state without tech help as you know.. you need to persuade your friend.

    - create a new one using an in-place upgrade repair install.
      My Computers


  3. Posts : 13,301
    Windows 10 Pro (x64) 21H2 19044.1526
    Thread Starter
       #3

    dalchina said:
    You could recover the partition using a suitable tool, restore it from a disk image already created using e.g. Macrium Reflect - you both are using disk imaging I hope- so frequently recommended to you can correct mistakes easily and often have a chance to recover to a previous good state without tech help.

    Unfortunately He only backs up his OS partition. He expanded the partition so proper recovery of
    the partition won't work.
    My answer was do without. The next major update should recreate it and to stick with
    imaging the EfI and OS partitions.
      My Computers


  4. Posts : 920
    Windows 10 Pro
       #4

    Copying the recovery partition across will not be an issue, it is after all just data. However both Acer and HP use custom software setups on their respective recovery partitions, so although you could probably even start the recovery process you may find the HP recovery setup could possibly fail at some point on an Acer machine and vice versa.
    An in place upgrade using Windows USB/ DVD (media creation tool) would be a better option as stated above since it would create a standard Windows recovery environment, you would loose any Acer customisation/ bundled apps but these could probably be downloaded from the Acer support site if needed.
      My Computer


  5. Posts : 38,373
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #5

    My answer was do without. The next major update should recreate it and to stick with
    imaging the EfI and OS partitions.
    - true- and after the upgrade your friend would need to start a new disk imaging schedule anyway- new base image- so all partitions could be included then.

    Meanwhile, if the Advanced Startup options were needed, your friend could boot from a Win 10 install medium.

    This might be a free partition recovery tool:
    Free Partition Recovery Tool | MiniTool Software Solution
      My Computers


  6. Posts : 3,377
    several
       #6

    Last time I looked, only the pro version of minitool does partition recovery.
      My Computer


  7. Posts : 7,402
    windows 10
       #7

    A lot of recovery are tied to a OEM BIOS and won't even try to restore
      My Computer


  8. Posts : 2,790
    Linux Mint 20.1 Win10Prox64
       #8

    Rebuild the Recovery partition is a simple process.
    1. Use diskpart to create the partition:
      diskpart
      list volume ===> identify the volume # for C drive
      select volume # ===> where # found from above
      shrink desired=529 ===> the Recovery partition for Win10 ver. 1909
      create par pri
      format fs=NTFS quick label=Recovery
      set id=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC ===> Id for Recovery type
      gpt attributes=0x8000000000000001
      exit
    2. copy WinRE.wim and the uninitialized ReAgent.xml files from the installation Media to C:\Windows\System32\Recovery
      - Mount the Installation ISO. If already mounted, Under Sources folder, Use 7-zip to open either install.ed or install.wim then navigate to Windows\system32\Recovery then copy both files
      NOTE: the install.esd or install.wim might contain multiple editions of Windows, just use any index. Also Recovery folder is hidden, you'd need to set the option to show hidden.
    3. From Admin command, run reagentc /enable. This will move WinRe.wim to the Recovery partition and set the GUID and location in ReAgent.xml
      My Computer


  9. Posts : 13,301
    Windows 10 Pro (x64) 21H2 19044.1526
    Thread Starter
       #9

    topgundcp said:
    Rebuild the Recovery partition is a simple process.
    1. Use diskpart to create the partition:
      diskpart
      list volume ===> identify the volume # for C drive
      select volume # ===> where # found from above
      shrink desired=529 ===> the Recovery partition for Win10 ver. 1909
      create par pri
      format fs=NTFS quick label=Recovery
      set id=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC ===> Id for Recovery type
      gpt attributes=0x8000000000000001
      exit
    2. copy WinRE.wim and the uninitialized ReAgent.xml files from the installation Media to C:\Windows\System32\Recovery
      - Mount the Installation ISO. If already mounted, Under Sources folder, Use 7-zip to open either install.ed or install.wim then navigate to Windows\system32\Recovery then copy both files
      NOTE: the install.esd or install.wim might contain multiple editions of Windows, just use any index. Also Recovery folder is hidden, you'd need to set the option to show hidden.
    3. From Admin command, run reagentc /enable. This will move WinRe.wim to the Recovery partition and set the GUID and location in ReAgent.xml

    Went with this and it appears good now!

    Thanks
      My Computers


  10. Posts : 23
    All Windows Versions
       #10

    "From Admin command, run reagentc /enable. This will move WinRe.wim to the Recovery partition and set the GUID and location in ReAgent.xml"

    This little tidbit is gold, saves a lot of hassle

    Just wanted to say thank you

    I used your info to create a more detailed procedure as I have found this issue in the field
      My Computer


 

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