UEFI Issue with ProLiant BL460c Gen 10 Server

[Piorin]

Hi!

I have a problem with HPE Proliant BL460c Gen 10 Blade Server running Citrix XenServer 7.6. In Legacy BIOS Mode server runs just fine from local drive and loads XenServer. When I tried to change Boot mode to UEFI(with or without UEFI Optimized option) server fails to pick up the hard drive and jumps straight to boot via PXE("Starting PXE IPv4 message and sits there forever). I've confirmed that this is not problem on Citrix side - from version 6.0 until the latest release XenServer supports boot using both UEFI and Legacy BIOS.

Could anyone help me with this issue? Any help would be much appreciated. 

[Jimmy Vance]

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@Piorin wrote:

Hi!

I have a problem with HPE Proliant BL460c Gen 10 Blade Server running Citrix XenServer 7.6. In Legacy BIOS Mode server runs just fine from local drive and loads XenServer. When I tried to change Boot mode to UEFI(with or without UEFI Optimized option) server fails to pick up the hard drive and jumps straight to boot via PXE("Starting PXE IPv4 message and sits there forever). I've confirmed that this is not problem on Citrix side - from version 6.0 until the latest release XenServer supports boot using both UEFI and Legacy BIOS.

Could anyone help me with this issue? Any help would be much appreciated. 

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While the OS supports BIOS or UEFI booting (and most do), you can't install via one method and switch to the other.. The boot methods are different (MBR vs GPT) and the OS installs the proper boot loader and boot files during the initial installation. There are references on the Internet on how to modify a system to switch booting from one method to another.  Would probably be quicker to switch modes and re-install the OS