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  • 1.  Conversion from vhdx to vmdk - Bios as EFI

    Posted Apr 12, 2015 07:22 PM

    Just was wondering if anyone had any issue when converting vhdx to vmdk, using the normal bios?  I was unable to set the bios as normal.  Once I set the bios as EFI, the vm booted beautifully.  Has anyone had any problem afterwards?



  • 2.  RE: Conversion from vhdx to vmdk - Bios as EFI

    Broadcom Employee
    Posted Apr 12, 2015 07:49 PM

    Hi vjsb22,

    What's the origin of the .vhdx that you're using as the source?  Usually, when an OS is installed, it will be installed for the firmware type on which it is running, and will only be usable with the same firmware type – i.e. EFI virtual machines generally can't be booted using BIOS firmware, and BIOS virtual machines generally can't be booted using EFI firmware.

    If the OS contained on the .vhdx was installed through EFI firmware, the behavior you are seeing is as expected.

    Cheers,

    --

    Darius



  • 3.  RE: Conversion from vhdx to vmdk - Bios as EFI

    Posted Apr 12, 2015 07:54 PM

    Thanks, I need to dig in the past, honestly I think some On Hyper-V are Normal and some are EFI.  I was mainly concerned with if there are any potential future issues anyone noticed when using EFI in general.    Thanks for answering.



  • 4.  RE: Conversion from vhdx to vmdk - Bios as EFI

    Broadcom Employee
    Posted Apr 12, 2015 08:01 PM

    Hyper-V "generation 1" virtual machines will use BIOS, while "generation 2" virtual machines will use EFI firmware.  Sounds like the source is a generation 2 VM.

    --

    Darius