Issues Installing windows to new VHD on existing drive [MBR | GUID Partition Table]


jonny

Member
Local time
8:19 PM
Posts
11
OS
windows 11
I managed to contig and shrink my windows 10 install on c: and I have some room, not yet enough room (if 64GB required).

I'm trying the windows 11 tiny, or trying to! Stuck with install to vhd on bare metal (been a while since I did with windows 7, on MBR with bcdboot fun).

I've just discovered mbr2gpt, but that fails to validate.

Also I'm just looking in disk-management, and whilst the USB is MBR, the disk is reportedly GPT
1705264317365.png1705264362286.png
I thought it was reportedly MBR, and GPT was required. I got a warning like "the selected disk has an MBR partition table" (copied from Fix 'Windows Cannot Be Installed to This Disk MBR'.)
 

My Computer

System One

  • OS
    windows 11
    Computer type
    Laptop
Doesn't look like I can edit my original, just wanted to add some details.

Tried creating an efi partition, both on the host physical drive (where the vhdx will reside) and then within the vhdx, and then tried both, only the first worked.

The install error is Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks.

I also tried mbr2gpt on the vhd disk once created and attached, alas this didn't work.
 

My Computer

System One

  • OS
    windows 11
    Computer type
    Laptop
Delete all the existing partitions on the VHD and install it to a completely unallocated disk.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    AMD Ryzen 7 3800XT
    Motherboard
    ASUS ROG Crosshair VII Hero (WiFi)
    Memory
    32GB
    Graphics Card(s)
    EVGA GeForce GTX 1080 Ti
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 7773
    CPU
    Intel i7-8550U
    Memory
    32GB
    Graphics card(s)
    Nvidia Geforce MX150
    Sound Card
    Realtek
    Monitor(s) Displays
    17"
    Screen Resolution
    1920 x 1080
    Hard Drives
    Toshiba 512GB NVMe SSD
    SK Hynix 512GB SATA SSD
    Internet Speed
    Fast!
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