Command (? for help): p
Disk /dev/vda: 41943040 sectors, 20.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 7C484DCC-D46A-4BBF-BEEA-7631C130CADC
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 4659 sectors (2.3 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048        41940361   20.0 GiB    8300  Linux filesystem

Command (? for help): n
Partition number (2-128, default 2): 2
First sector (34-41943006, default = 41940992) or {+-}size{KMGTP}: 34
Last sector (34-2047, default = 2047) or {+-}size{KMGTP}:
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): EF02
Changed type of partition to 'BIOS boot partition'