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Unable to merge a partition using Disk Management

  1. #1


    Posts : 194
    Windows 8.1x64 Pro

    Unable to merge a partition using Disk Management


    Hi, I have a laptop with Windows 8 installed in a 256Gb SSD. There's a 32Gb recovery partition whose purpose is to recover the drive to factory install. Since I already imaged this recovery partition to an external drive I would like to delete it and merge it to the main C partition to increase capacity. I know I can do this easily with 3rd party solutions (Easus, etc), but I'd like to do it using the Windows 8 built in Disk Management. I tried but when I right click on the 32Gb recovery partition the only option that shows up is "Help", it does not show any other option that shows for the other partitions (Shrink, etc). Any suggestions? Thanks.

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  2. #2


    You need to find and read up on PTEDIT32.EXE .. it will allow you to unhide the drive to an 07 and then its treated like a regular drive again. Maybe delete it and expand c into it. A recovery partition copied to another drive.. its restore feature.. may or may not work. Probably a visit to your laptop makers forums will quickly see omg what do I do now things.
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  3. #3


    San Jose - California
    Posts : 2,801
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    Your recovery partition is a special EISA (Extended Industry Standard Architecture) partition, Sometimes it does not have a drive letter (partition is hidden) assigned or can be deleted using Disk Management.

    To delete the EISA recovery partition, you need to use diskpart.

    1. Open Command Prompt as Administrator.
    2. Type diskpart then hit Enter
    3. Type list disk then hit Enter
    4. Type select disk X then hit Enter <==== Where X is the disk # contained the partition you want to delete
    5. Type select partition X then hit Enter <==== Where X is the partition # you want to delete
    6. Type delete partition override then hit Enter
    7. Type Exit then hit Enter


    Now you can merge it using Disk Management Tool.

    NOTE: Be careful and Take notes on the size of the disk and the partition you want to delete so you don't accidentally delete the wrong one.
    Last edited by topgundcp; 21 Jan 2013 at 03:58.
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  4. #4


    Posts : 194
    Windows 8.1x64 Pro


    Quote Originally Posted by topgundcp View Post
    Your recovery partition is a special EISA (Extended Industry Standard Architecture) partition, Sometimes it does not have a drive letter (partition is hidden) assigned or can be deleted using Disk Management.

    To delete the EISA recovery partition, you need to use diskpart.

    1. Open Command Prompt as Administrator.
    2. Type diskpart then hit Enter
    3. Type list disk then hit Enter
    4. Type select disk X then hit Enter <==== Where X is the disk # contained the partition you want to delete
    5. Type select partition X then hit Enter <==== Where X is the partition # you want to delete
    6. Type delete partition override then hit Enter
    7. Type Exit then hit Enter


    Now you can merge it using Disk Management Tool.

    NOTE: Be careful and Take notes on the size of the disk and the partition you want to delete so you don't accidentally delete the wrong one.
    I followed your steps but when I click LIST DISK, it shows only "Disk 0" with the full capacity (238GB), without showing any of the partitions. Therefore I cannot proceed with "SELECT PARTITION X" as there are no partitions listed.

    P.D.: When I enter the command "DETAIL DISK" after selecting Disk 0, it shows the partitions as "Volumes". The 32Gb factory recovery partition is labeled as "Volume 4", NTFS, Healthy and Hidden

    UPDATE: After "SELECT VOLUME 4" I entered the command "DELETE PARTITION OVERRIDE" and now the recovery partition was successfully deleted. I went to Disk Management and I created an E partition (in addition to the system C partition). When I right click on E I see "Shrink" and "Delete" volume, but I don't see "Merge", how can I merge C and E?

    UPDATE2: The "Extend" option was unavailable in the C partition, but when I deleted the E partition to unallocated, the "Extend" command appeared when right clicking on C. I proceeded to extend the C partition to the maximum available capacity and apparen tly now the E partition was merged into the C partition (the E partition is no longer listed and the C partition shows full capacity).
    Last edited by antares; 21 Jan 2013 at 12:51.
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  5. #5


    Posts : 120
    windows 8 pro


    Why not simply use one of the many free partition managers?
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  6. #6


    San Jose - California
    Posts : 2,801
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    I followed your steps but when I click LIST DISK
    After step 5, Try again with:
    Sorry, I miss 1 step. Type list partition then hit Enter, step 5 and 6 will list the partition



    1. Open Command Prompt as Administrator.
    2. Type diskpart then hit Enter
    3. Type rescan then hit Enter
    4. Type list disk then hit Enter
    5. Type select disk X then hit Enter <==== Where X is the disk # contained the partition you want to delete
    6. Type list partition then hit Enter
    7. Type select partition X then hit Enter <==== Where X is the partition # you want to delete
    8. Type delete partition override then hit Enter
    9. Type Exit then hit Enter
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  7. #7


    Posts : 194
    Windows 8.1x64 Pro


    Quote Originally Posted by easyq View Post
    Why not simply use one of the many free partition managers?
    Hi, as I mentioned when starting the thread, I know I can use free partition managers to ease the task, but it's cool to learn how to do these things using Windows built in tools.

    Quote Originally Posted by topgundcp View Post
    I followed your steps but when I click LIST DISK
    After step 2, Try again with:
    Type rescan then hit Enter, step 5 and 6 will list the partition



    1. Open Command Prompt as Administrator.
    2. Type diskpart then hit Enter
    3. Type rescan then hit Enter
    4. Type list disk then hit Enter
    5. Type select disk X then hit Enter <==== Where X is the disk # contained the partition you want to delete
    6. Type select partition X then hit Enter <==== Where X is the partition # you want to delete
    7. Type delete partition override then hit Enter
    8. Type Exit then hit Enter
    Hi topgun, as you can see I updated the post and was able to successfully merge the partitions without the RESCAN command. Thanks for your help.
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  8. #8


    San Jose - California
    Posts : 2,801
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    Good to hear it worked. Actually I missed 1 step. I updated the post above with list partition added.
    Rescan is not needed, just to ensure that everything is listed.
    Please mark as SOLVED.
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  9. #9


    Posts : 194
    Windows 8.1x64 Pro


    Quote Originally Posted by topgundcp View Post
    Good to hear it worked. Actually I missed 1 step. I updated the post above with list partition added
    Thanks, but apparently as I mentioned I was able to delete the factory recovery partition with your original steps plus a few others I improvised on the go. To recap, this is what I did:

    1. Open Command Prompt as Administrator.
    2. Type diskpart then hit Enter
    3. Type list disk then hit Enter
    4. Type select disk X then hit Enter <==== Where X is the disk # contained the partition you want to delete
    5. Type DETAIL DISK to show the volumes (partitions) within the disk
    6. Type SELECT VOLUME X, where X is the volume you want to delete
    7. Type delete partition override then hit Enter
    8. Type Exit then hit Enter
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  10. #10


    San Jose - California
    Posts : 2,801
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    I saw that, just want to add the step to the list so it works as well.
    Cheers
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Unable to merge a partition using Disk Management

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