The GUID Partition Table (GPT) replaces the previous master boot record (MBR). GPT partitions can hold 18 exabytes compared to 2.2TB for the MBR.

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To resolve this issue, the user needs to convert the GUID Partition Table disk to MBR. This can be done using DISKPART. 1] Use the DISKPART to convert the GPT Disk to MBR Disk.

I've neve used them personally but I know parted can create them and it looks like the kernel option is CONFIG_EFI_PARTITION which is on by default in Debian, I don't have an Ubuntu machine to ...