Comment # 11 on bug 1052532 from Matthias Bach

The issue of the installation media not being bootable in UEFI mode might be
due to the missing GPT on the devices. You might want to try creating a GPT on
the devices. This helps on my Thinkpad E470.

To create a GPT do the following, assuming the boot media is at `/dev/sdX`:

        # gdisk /dev/sdX
        GPT fdisk (gdisk) version 0.8.8

        Partition table scan:
        MBR: MBR only
        BSD: not present
        APM: not present
        GPT: not present


        ***************************************************************
        Found invalid GPT and valid MBR; converting MBR to GPT format
        in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
        typing 'q' if you don't want to convert your MBR partitions
        to GPT format!
        ***************************************************************


        Command (? for help): p
        Disk /dev/sdX: 15138816 sectors, 7.2 GiB
        Logical sector size: 512 bytes
        Disk identifier (GUID): BAFE831A-9632-464D-B919-E70907745BFA
        Partition table holds up to 128 entries
        First usable sector is 34, last usable sector is 15138782
        Partitions will be aligned on 4-sector boundaries
        Total free space is 6260593 sectors (3.0 GiB)

        Number  Start (sector)    End (sector)  Size       Code  Name
            1            4020           11831   3.8 MiB     EF00  EFI System
            2           11832         8882175   4.2 GiB     0700  Microsoft
basic data

        Command (? for help): w

        Final checks complete. About to write GPT data. THIS WILL OVERWRITE
EXISTING
        PARTITIONS!!

        Do you want to proceed? (Y/N): Y
        OK; writing new GUID partition table (GPT) to /dev/sdX.
        The operation has completed successfully.

        # sync