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I have a Windows Server 2008r2 with two HDDs installed. The main partition, which has Windows installation on it, is mirrored between the two disks.

The problem is, this is a UEFI machine, and EFI partition is only on one of the HDDs. So if this HDD fails, the system won't boot from the second HDD until I reinstall bootloader on it (with Windows Recovery Console for example). Obviously, it greatly increases potential downtime in case of a disk failure.

Is there a way to install Windows EFI bootloaders on both disks, so if one of the disks fails, the second one will boot?

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