Hello,
Thank you for posting in Q&A forum.
Please refer to the following link to learn how to increase the size of a virtual disk in Hyper-V:How to Increase Disk Size in Hyper-V: Complete Guide (nakivo.com)
The link provides detailed steps, and you can follow the instructions in the link.
I hope the information above is helpful.
Best Regards,
Yanhong Liu
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