D disk disappeared, healthy partition

Page 1 of 2 12 LastLast

  1. Posts : 5
    windows 10
       #1

    D disk disappeared, healthy partition


    Hello,

    for some reason today mi D disk simply disappeared (disk 0). As you can see in the screenshots I can't change the name, it's a healthy partition, and I also tried refreshing and everything, still nothing. It shows as a normal disk in "disk management" but not in "This PC" (the last screenshot). What's the problem here? Thanks.
    D disk disappeared, healthy partition-img1.png
    D disk disappeared, healthy partition-img2.png
    D disk disappeared, healthy partition-img3.png
      My Computer

  2. dalchina's Avatar
    Posts : 30,062
    Win 10 Pro (1903)
       #2

    It seems it's lost its drive letter- have you tried assigning one? You appear to be selecting an EFI partition in the screenshot. Those options are greyed out if I try that with my EFI partition.

    The other oddity is you appear to have 2 EFI partitions.
    Are you sure your PC boots if Disk 0 is not present? (I.e. are all partitions for Win 10 actually one 1 disk?)

    You also seem to have little free space on C: - certainly not enough for any next Windows upgrade (25Gb min probably needed).
      My Computers


  3. Posts : 5
    windows 10
    Thread Starter
       #3

    dalchina said:
    It seems it's lost its drive letter- have you tried assigning one? You appear to be selecting an EFI partition in the screenshot. Those options are greyed out if I try that with my EFI partition.
    I'm only able to change the Windows(C:) drive letter, all the rest are greyed out.
    D disk disappeared, healthy partition-img4.png

    The other oddity is you appear to have 2 EFI partitions.
    Yes, there are 2 EFI partitions. Is that a problem?

    Are you sure your PC boots if Disk 0 is not present? (I.e. are all partitions for Win 10 actually one 1 disk?)
    I don't know. What do you recommend me to do?

    Some additional information: a few months ago I installed xubuntu on my laptop, and I had to do some changes to the partitions, after using said OS for a few weeks I tried to zip a file in my desktop using the terminal, my laptop suddenly got frozen and reversed back to windows (it completely erased xubuntu, I suppose a critical error or something happened). After that I didn't make any change whatsoever, I've been just using Windows10. I actually never understood what happened.
      My Computer

  4. dalchina's Avatar
    Posts : 30,062
    Win 10 Pro (1903)
       #4

    If you notice, your nominal D: partition does not have a file system shown.
    Is there anything important on it - do you have a backup for example a recent disk image?
    (Routine disk imaging is recommended here endlessly - e.g. Macrium Reflect (free) ).

    Please post a screenshot of your partitions using a 3rd party partition manager. This should show 1 other small partition too.
    E.g. Minitool Partition Wizard.

    Wrt your Linux experience this is interesting and similar:
    How do I find out which EFI system partition is in use by Windows 10? - Super User
      My Computers


  5. Posts : 5
    windows 10
    Thread Starter
       #5

    dalchina said:
    If you notice, your nominal D: partition does not have a file system shown.
    Is there anything important on it - do you have a backup for example a recent disk image?
    (Routine disk imaging is recommended here endlessly - e.g. Macrium Reflect (free) ).

    Please post a screenshot of your partitions using a 3rd party partition manager. This should show 1 other small partition too.
    E.g. Minitool Partition Wizard.

    Wrt your Linux experience this is interesting and similar:
    How do I find out which EFI system partition is in use by Windows 10? - Super User
    No, I don't have a backup, but there was nothing important on it.

    D disk disappeared, healthy partition-img5.png

    Maybe this is the problem? I double clicked the Disk 1 EFI partition and there's an Ubuntu folder:
    D disk disappeared, healthy partition-img6.png
      My Computer

  6. dalchina's Avatar
    Posts : 30,062
    Win 10 Pro (1903)
       #6

    Yep, there you can see it's EXT4 not NTFS.

    You can now also see all 4 partitions of your Win 10.

    You can now deal with that partition appropriately.

    You should not have 2 EFI partitions.. the spare one can be deleted - the one on Disk 0.

    Then you need to consider the lack of free space on C: - the disk isn't so large. There's a tutorial on recovering space on C:
      My Computers

  7. Megahertz's Avatar
    Posts : 2,425
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #7

    Why do you have a Linux partition on drive 1?
    If you want to run Linux don't delete the EFI partition or it won't boot.

    As you have a Windows boot loader on disk 1, I suggest you disconnect drive 1 from the MB (SATA or power cable) and try to boot Windows from disk 2. If it doesn't boot, it can be that the boot loader of disk 2 is on EFI partition of disk 1
      My Computers


  8. Posts : 5
    windows 10
    Thread Starter
       #8

    dalchina said:
    Yep, there you can see it's EXT4 not NTFS.

    You can now also see all 4 partitions of your Win 10.

    You can now deal with that partition appropriately.

    You should not have 2 EFI partitions.. the spare one can be deleted - the one on Disk 0.

    Then you need to consider the lack of free space on C: - the disk isn't so large. There's a tutorial on recovering space on C:
    Okay, so I erased the partition, but now it's Unallocated. Should I apply "Wipe partition"? I want to be able to use the 900gb one.

    D disk disappeared, healthy partition-img7.png


    Megahertz said:
    Why do you have a Linux partition on drive 1?
    If you want to run Linux don't delete the EFI partition or it won't boot.

    As you have a Windows boot loader on disk 1, I suggest you disconnect drive 1 from the MB (SATA or power cable) and try to boot Windows from disk 2. If it doesn't boot, it can be that the boot loader of disk 2 is on EFI partition of disk 1
    Thanks but I don't want to use Linux right now.
      My Computer

  9. MisterEd's Avatar
    Posts : 504
    Windows 10 Pro 64-bit v20H2
       #9

    Select unallocated space and select create partition
      My Computers

  10. dalchina's Avatar
    Posts : 30,062
    Win 10 Pro (1903)
       #10

    If you wish to make use of the entire disk, delete the EXT4 partition and make use of the entire disk.

    You have a decent partition manager, so you can do that readily.

    And as I said, do make sure you can in fact boot entirely from your Windows system drive just to be safe.
      My Computers


 
Page 1 of 2 12 LastLast

  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 01:54.
Find Us




Windows 10 Forums