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Virtual Machines' Raw Disks cannot be Upgraded to RDMs by the Upgrade Script (2168)
If you are using raw disks, you must convert them to RDMs in ESX Server 2.5 before upgrading virtual machines to ESX Server 3.0. However, if you have already upgraded your virtual machines to ESX Server 3.0, do the following:
- Migrate the virtual machine that uses the raw disk back to ESX Server 2.5.
- Convert the virtual machine so it can use the RDM.
- Migrate the virtual machine to ESX Server 3.0.
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