How does Windows boot to advanced recovery option e.g. command prompt?

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  1. Posts : 2,799
    Linux Mint 20.1 Win10Prox64
       #21

    Thanks- looks very promising- will investigate tomorrow.
    However, what has persuaded me to discount the 480Mb recovery partition to date is its apparent lack of content:
    Reagentc command is moving things in and out from the Recovery folder to C:\Windows\System32\Recovery
    NOTE:
    You need to set folder option to show protected operating system files to see them.
    reagentc /enable =====> moves Winre.wim to Recovery folder
    reagentc /disable =====> moves Winre.win to C:\Windows\System32\Recovery

    Apparently, when you run reagentc /setimage... The new Winre.wim might be deleted and shows empty in partition 5.
      My Computer


  2. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #22

    I'll try selecting the second recovery partition and enabling that tomorrow, thanks. I have the wim file, which I generated specifically. I found it not present in C:\Windows\System32\Recovery; it now is, so I can see what happens quite easily when I run reagentc /enable
      My Computers


  3. Posts : 5,478
    2004
       #23

    dalchina said:
    I can see what happens quite easily when I run reagentc /enable
    Disable it first. Then set the location, then enable.

    I'm not sure why you didn't to as @LCDR suggested though on your other thread. It would get rid of all your pointless partitions and make sure all others were up to date.

    It is easy - backup C, delete all partitions and clean install, restore C.
      My Computer


  4. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #24

    It is easy - backup C, delete all partitions and clean install, restore C.
    That's exactly what I did do. It's shown in the other thread and mentioned again.

    All my pointless partitions? How many do you think there are?

    There's one as far as I know, created when I subsequently did an in-place upgrade repair install.

    So what didn't I do that @NavyLCDR suggested?
      My Computers


  5. Posts : 30,524
    Windows 10 (Pro and Insider Pro)
       #25

    dalchina said:
    That's exactly what I did do. It's shown in the other thread and mentioned again.

    All my pointless partitions? How many do you think there are?

    There's one as far as I know, created when I subsequently did an in-place upgrade repair install.

    So what didn't I do that @NavyLCDR suggested?
    Interesting thread dalchina...

    One question: did you try to fix boot problems with Macrium. I know it's one of the most reliable programs (in that area too), just don't know if it diggs into repair section of boot.
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  6. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #26

    Yes in the first thread... it didn't help.

    This is a learning curve- which I could have done without really- all from when a smooth upgrade to the Creator's build led to the Advanced Startup options being unavailable.

    I have an entirely speculative idea- perhaps it was caused by my Anniversary build having an extra recovery partition remaining from an in-place upgrade repair many months before...

    Later on I'll try @topgundcp 's idea...
      My Computers


  7. Posts : 30,524
    Windows 10 (Pro and Insider Pro)
       #27

    dalchina said:
    Yes in the first thread... it didn't help.

    This is a learning curve- which I could have done without really- all from when a smooth upgrade to the Creator's build led to the Advanced Startup options being unavailable.

    I have an entirely speculative idea- perhaps it was caused by my Anniversary build having an extra recovery partition remaining from an in-place upgrade repair many months before...

    Later on I'll try @topgundcp 's idea...
    Have to read through your other thread (why did you separate them?).

    When topgun (or was it Navy..) suggested you to clean install and restore just C: partition, you said you did. But you didn't clean install, just did in-place upgrade. I could misunderstood, of course.
      My Computers


  8. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #28

    topgundcp said:
    I have questions for you:
    1. if you open admin command, copy and paste: reagentc /boottore&shutdown /r /f /t 00
      Does it boot into recovery ?
    2. Is the disk layout still look like the screen you posted in the other thread with 2 recovery partitions (450MB and 480MB)?
      Attachment 155144
      According to suggestions from the thread, you changed from partitiion 5 to partition 1 with reagentc, which in my opinion is not correct. When you upgrade, windows creates an extra 450MB after C: and put a new Winre.wim there and set it to partition 5 (counting from left to right)
    Hi, @topgundcp
    if you open admin command, copy and paste: reagentc /boottore&shutdown /r /f /t 00
    Does it boot into recovery ?
    - that gives me a 454 'Unexpected error'

    Is the disk layout still look like the screen you posted in the other thread with 2 recovery partitions (450MB and 480MB)?
    Yes

    According to suggestions from the thread, you changed from partitiion 5 to partition 1 with reagentc, which in my opinion is not correct.
    The command to set the recovery partition to partition 5 fails, as WINDOWSRE does not exist under RECOVERY
      My Computers


  9. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #29

    Bree said:
    I had occasion to sort out booting to my recovery partition a while back. The GUID involved is the one shown by bcdedit as 'recoverysequence' for {current}. This should match the 'Boot Configuration Data (BCD) identifier' shown by reagentc /info

    Somehow I'd managed to change mine and it was booting to a quite different recovery environment. I used reagentc to find the correct GUID and bcdedit to set it to boot correctly. This was back in Anniversary update, in case of further problems I kept a record of the information back then, and the updated information after the upgrade to Creators Update.

    I've attached my records in case they are of help.

    Interestingly, I've since discovered how my other system manages to boot to the recovery environment despite having no recovery partition (apparently the free upgrade to 10 was unable to find anywhere to put one, being an MBR which already had four partitions). The Windows RE location is shown by reagentc as:
    \\?\GLOBALROOT\device\harddisk0\partition3\Recovery\WindowsRE

    But partition 3 is my C: drive. The files that would normally be found in the recovery partition are instead in the hidden and inaccessible C:\Recovery folder, along with a 0 byte hidden file at the root of C: called $WINRE_BACKUP_PARTITION.MARKER
    @Bree
    Thanks, I'm missing
    recoverysequence {f1e6bbc2-051f-11e7-9da9-e89a8f988ded}


    How does Windows boot to advanced recovery option e.g. command prompt?-1.jpg
      My Computers


  10. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
    Thread Starter
       #30

    So, first considering topgundcp's idea of which recovery partition to select:

    I created a folder WindowsRE under Recovery in partition 5 (offline), booted and selected that partition as the recovery partition.

    I rebooted (SHIFT+ left click Restart)

    The Advanced startup options had the Win 10 white rectangle around them, but Command Prompt, System Restore and Startup Repair were missing.

    I discovered I still needed to run
    reagentc /enable

    This gave me all Advanced startup options and the missing BCD entry is now present, but...
    the PC still hangs on selecting e,g Command Prompt as before.

    How does Windows boot to advanced recovery option e.g. command prompt?-1.jpg

    How does Windows boot to advanced recovery option e.g. command prompt?-2.jpg
    Last edited by dalchina; 27 Sep 2017 at 10:05.
      My Computers


 

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