What Partitions do I need to keep

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  1.    10 Mar 2018 #11

    C:\Users\pdc95>reagentc /infoThis command can only be executed from an elevated command prompt.REAGENTC.EXE: Operation failed: 5REAGENTC.EXE: An error has occurred.

    This is the result.
      My ComputerSystem Spec

  2.    10 Mar 2018 #12

    pdc95 said: View Post
    Can I simply delete all the partitions on drive 1 (Internal drive) and re partition it as a single partition.
    No, it won't boot. Your EFI system partition is on disk 1 and your C volume is on disk 0. You could move it onto the SSD if you wanted.

    For reagentc you need to run from elevated command frompt (right click and run as Administrator).
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  3. Bree's Avatar
    Posts : 9,523
    10 Home x64 (1809) (10 Pro on 2nd pc)
       10 Mar 2018 #13

    pdc95 said: View Post
    C:\Users\pdc95>reagentc /infoThis command can only be executed from an elevated command prompt.REAGENTC.EXE: Operation failed: 5REAGENTC.EXE: An error has occurred...
    Yes, that's normal in an ordinary command prompt. I did tell you to...
    Bree said:
    ...open a command prompt (Admin)...
      My ComputersSystem Spec

  4.    10 Mar 2018 #14

    C:\WINDOWS\system32> reagentc /infoWindows Recovery Environment (Windows RE) and system reset configurationInformation: Windows RE status: Enabled Windows RE location: \\?\GLOBALROOT\device\harddisk0\partition2\Recovery\WindowsRE Boot Configuration Data (BCD) identifier: cb38db2b-b516-11e7-bb8a-b5037269ac39 Recovery image location: Recovery image index: 0 Custom image location: Custom image index: 0REAGENTC.EXE: Operation Successful.

    How do I move the EFI partition ? sorry I am a thick OAP.!
    Pete
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  5. ThrashZone's Avatar
    Posts : 4,164
    3-Win-7Prox64 2-Win10Prox64
       10 Mar 2018 #15

    Hi,
    Without efi partition your computer will not boot :)
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  6.    10 Mar 2018 #16

    Your recovery partition is on disk 0 (and registered OK) so you can delete the one on disk 1. You can also delete partition 3 on disk 1 (your D volume) assuming you don't want it.

    To move the EFI partition is a bit more involved.

    You would need to create some space (100mb) for it on disk 0 by shrinking C. Normally you would have EFI before C but it doesn't really matter. Then create a EFI partition in this free space and format it FAT32. Then mount the EFI partition on disk 1 and copy the contents.

    To be really correct you should make a 16MB MSR partition as well:

    Click image for larger version. 

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    UEFI/GPT-based hard drive partitions | Microsoft Docs

    I'd be inclined to leave the EFI on disk 1 and delete the other 2 partitions. You aren't going to unplug disk 1 (I don't think you can) and this would be easiest.

    If you would like detailed instructions on moving it though just say.
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  7.    10 Mar 2018 #17

    Thank you very much for your help.
    I assume that I can delete partitions 2,3,4 on disk 1 leaving partition 1 (EFI) then form a new partition on disk 1 to use all remaining space.
    I will try this first thing tomorrow.
    Pete
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  8. ThrashZone's Avatar
    Posts : 4,164
    3-Win-7Prox64 2-Win10Prox64
       10 Mar 2018 #18

    Hi,
    To see if you already have a 16mb partition use free mini tool it will show it if it exists
    Best Free Partition Manager for Windows | MiniTool Partition Free
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  9.    10 Mar 2018 #19

    pdc95 said: View Post
    I assume that I can delete partitions 2,3,4 on disk 1 leaving partition 1 (EFI) then form a new partition on disk 1 to use all remaining space.
    I'd be inclined to leave partition 2 as well - Just delete D and the recovery. Partition 2 is Microsoft Reserved (MSR) Partition and is only 128MB.

    128MB is the old size (now it is 16MB) and it is also on the wrong disk - it should be before C. Note in your picture in post 3 you have assigned letter E to it - the MSR is not formatted and should not have a drive letter - it is just a bit of free space the purpose of which is unclear (to me anyway).

    Windows seems to work fine without MSR but best to leave it as Microsoft say it should be there and it is only tiny.

    It looks like you had Windows installed on that drive at some point.
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  10. ThrashZone's Avatar
    Posts : 4,164
    3-Win-7Prox64 2-Win10Prox64
       10 Mar 2018 #20

    Hi,
    Windows will always create another recovery partition
    Question is do you want to use system restore :)
    Use disk clean up as administrator and check all boxes and also go to More options and click on delete restore points.
    After it's done restart the machine to complete.

    After that delete partition 2 if you want too.
      My ComputersSystem Spec


 
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