gentoo@livecd ~ $ sudo fdisk -t dos /dev/sda

Welcome to fdisk (util-linux 2.24.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Partition 1 does not start on physical sector boundary.

Device    Boot Start       End    Blocks  Id System
/dev/sda1 *        1 976773167 488386583+ ee GPT

Command (m for help):