Windows 8 and 8.1 Forums


Windows disk management, not accurate for GPT and EFI partitions?

  1. #1


    Posts : 6
    Windows 8

    Windows disk management, not accurate for GPT and EFI partitions?


    I installed Windows 8 with UEFI enabled in BIOS on a GPT SSD disk and was curious about the partitions the installation created. The disk was clean with no partitions before installing. (Note: I split the main partition afterwards so ignore the last partition in these screen shots).

    Windows 8 disk management shows the disk (disk 2), as four partitions, the first two reported incorrectly as 100% free and unused.

    Then looking at the same disk (disk 3 here because it starts counting at '1' and not '0' like the previous window), with MiniTool Partition Wizard you see the the five partitions accurately displayed and the usage correctly shown.

    Does anyone else looking at their GPT disks and EFI partitions with Windows disk management notice the same, or have an explanation?

    Also has anyone had W8 install the 300MB recovery partition? Is this normal for UEFI installations?
    Attached Thumbnails Attached Thumbnails Capture.PNG   Capture1.PNG  

      My System SpecsSystem Spec

  2. #2


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    That is normal.

    Windows won't show you the msr - and the others are shown in disk mgmt as an unrecognized filesystem.

    Probably to stop you, or programs from messing with them .

    3rd party partitioners will let you see them.
      My System SpecsSystem Spec

  3. #3


    Posts : 6
    Windows 8


    Do you know why the System partition, ie the boot partition, is shown as unused? With MBR disks you get to see the equivalent partition (system reserved), percentage use shown as it is.
      My System SpecsSystem Spec

Windows disk management, not accurate for GPT and EFI partitions?
Related Threads
Hello to all! Why windows 7 and windows 8 introduced a limitation when using Disk Management, and is NOT possible to create more than 3 Primary Partitions? However, using DiskPart from command line it is VERY possible, no warnings or notices. C:\Windows\system32>diskpart Microsoft...
Look at this screenshot and tell me how to get one partition instead F and H. 53842 Easeus needs bigger drive. to backup to. I think the one large one is unallocated. shown as disk 8. The way windows sees my external usb drive.
I just bought a new SSD and did a fresh install of windows going from Windows 7 to 8.1. I simply took out my old SSD and put in the new one, and installed windows 8.1 pro from a USB stick onto the new ssd. 2 existing HDDs were left on there, I'm also replacing them but I want to format them...
Hello, thanks for reading and any help you may be able to offer. I have a Western Digital external hard drive. Model WD5000C032 500GB. It's an older device that was working just fine on my Mac (I don't know what OS it was running and do not have access to it any longer). I have brought this HD...
Unable to start Disk Management. I tried the following without success: - Check file integrity - Repair with DISM - Start the Virtual Disk Service and Volume SHadoy Copy manually and set them to Automatic and Manual (it starts, but Disk Management cannot connect to it) - Disable Firewall and...
Hi Question before I proceed please : Have 2 hard drives (SSDs). Drive 1 : OS Win 8.1 for general web, office and junk running Drive 2 : OS Win 8.1 for tweaked hobby work; Audio recording etc Whilst I wish to not physically disconnect the drives on each boot. I would like to have the...
Is it still possible to bring a disk offline using Disk Management (diskmgmt.msc) in Windows 8 the same way it was possible in Windows 7 or is using Diskpart.exe the only way?
Eight Forums Android App Eight Forums IOS App Follow us on Facebook