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Upgrade hyperv 2008 role to hyperv 2012 role
Can someone confirm whether or not a box running 2008r2 with the hyperv 2008 role install can simply upgrade the hyperv role to 2012 whilst keeping the 2008r2 os? I attempted it but I get a 'cannot upgrade' error. My assumption is no.
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googol
Member Posts: 107
No, upgrades are not feature upgrades, but Operating System upgrades. You have to go to Server 2012 (R2) to get any Server 2012 feature/version/etc.
When you do an upgrade from 2008R2 to 2012, make sure all VMs are powered off, and no snapshots with them.
Single Hyper-V Server Running Windows Server 2008 R2 with GUI In Place Upgrade to Windows Server 2012 with GUI - TechNet Articles - United States (English) - TechNet Wiki