Hyper-v : “there isn’t enough memory available to create a ramdisk device”

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When you are trying to deploy a Windows Server 2012 R2 using MDT (Microsoft Deployment Toolkit) in a Hyper-v Generation 2 VM, configured with 512 Mb of Startup RAM, you can get this error while starting the VM “there isn’t enough memory available to create a ramdisk device“:

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To solve it, you just need to increase the Startup RAM a little bit

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Then, you can try again, it should works 🙂