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AlexVPerl
Asked: 2020-01-25 01:48:11 +0800 CST

Unable to Extend Partition on Hyper-V Generation 2 VM

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I'm facing a weird problem with Generation 2 Hyper-V VM, where I'm unable to extend partition in Guest OS.

Once I edit the VHDX & Expand it using Hyper-V Manager on the Host OS, and boot into Guest OS, I navigate to Disk Management to extend existing C:/ partition and see "Extend Partition" is grayed out because there is a 100 MB UEFI partition between C:/ and un-allocated space I just provisioned.

The only way to extend that I found was to use a paid partition tool like EaseUS or AOMEI, I'm unable to install their free versions as this is a Windows Server OS and they require Server editions of their software which are paid.

I tried using GParted Live CD, but it does not see to allow extending if partition is not adjacent.

How can I extend existing partition in Guest OS?

partition hyper-v gparted vhdx extend

1 Answers

  1. Best Answer

    GParted will allow you to move the UEFI Partition to the end of the un-allocated space (You may need to leave a little space as per your comments). Following the move you can now extend your OS partition.

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