The disk has to be converted to being a GPT to being UEFI compatible. I've long since given up on the built-in LANDesk Partition Drives action and just call the following from a Execute Command action using a DISKPART /S <scriptname> with the following script:
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REM == CreatePartitions-UEFI.txt ==
REM == These commands are used with DiskPart to
REM create five partitions
REM for a UEFI/GPT-based PC.
REM Adjust the partition sizes to fill the drive
REM as necessary. ==
select disk 0
clean
convert gpt
REM == 1. System partition =========================
create partition efi size=1000
format quick fs=fat32 label="System"
assign letter="S"
REM == 2. Microsoft Reserved (MSR) partition =======
create partition msr size=128
REM == 3. Windows partition ========================
REM == a. Create the Windows partition ==========
create partition primary
REM == b. Shrink Partition to make room for WinRE Tools Partition ===
shrink minimum=1000
REM == c. Prepare the Windows partition =========
format quick fs=ntfs label="Windows"
assign letter="C"
REM == 4. Windows RE tools partition ===============
create partition primary
format quick fs=ntfs label="Windows RE tools"
assign letter="T"
set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac"
gpt attributes=0x8000000000000001
exit
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