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VM Conversion using Instant Recovery

  • September 21, 2025
  • 9 comments
  • 106 views

hs08
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I try to migrate my vmware VM to hyper-v using veeam and i always got ‘failed to modify disks”. Anyone know how to fix this?

 

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Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • 9587 comments
  • September 21, 2025

Seems there are many posts on the forums about this and Linux OS.  Check this one but there are many more with a Google search - https://forums.veeam.com/veeam-backup-replication-f2/failed-to-modify-disks-when-doing-an-instant-restore-to-hyperv-t77368.html

 


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  • September 21, 2025

hs08
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  • September 22, 2025

@Chris.Childerhose 

For another linux VM yes i can successfull migrate to hyper-v using same method. Only for this one VM the migration is failed.


Chris.Childerhose
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  • 9587 comments
  • September 22, 2025

@Chris.Childerhose 

For another linux VM yes i can successfull migrate to hyper-v using same method. Only for this one VM the migration is failed.

Then I would suggest contacting support for assistance.


hs08
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  • September 22, 2025

yes, i already open ticket to veeam support. WIll post here about the solution if the issue was resolved.


  • Not a newbie anymore
  • 5 comments
  • September 22, 2025

https://www.veeam.com/blog/vmware-to-hyper-v-migration.html
https://en.ittrip.xyz/windows/troubleshooting/linux-hyperv-veeam

this article may help you


dips
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  • September 22, 2025

yes, i already open ticket to veeam support. WIll post here about the solution if the issue was resolved.

What have you tried so far?


MarkBoothman
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  • September 22, 2025

When you edit the VM the disk size doesn’t show something more than 2 decimal places does it

for example

100.00224443433434 GB

 

 


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • 9587 comments
  • September 22, 2025

yes, i already open ticket to veeam support. WIll post here about the solution if the issue was resolved.

Sounds good let us know how things go and the solution.