Ah okay thank you that's good to know.

So I ran that command and it came back with:

Code:
Disk /dev/sda: 465.78 GiB
Disk model: WDC WD5000AAKX-0
Disklabel type: gpt

Device          start        end           Sectors      size    type
/dev/sda1     2048        1050623    1048576   512M   EFI system
/dev/sda2     1050624   3147775    2097152   1G       Linux filesystem
/dev/sda3      3147776  976771071 973623296 464.3G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 200 GiB

Disk /dev/sdb: 28.89 GiB,
Disk model: DataTraveler 3.0
DiskLabel type: dos

Device         Boot           Start             End             Sectors            Size              Id             Type
/dev/sdb1     *              0                  5999871      5999872          2.9G             0              Empty
/dev/sdb2                     5271500       5279499      8000                3.9M             ef             EFI (FAT-12/16/32)
/dev/sdb3                     6000640     60538880       54538241         26G             83            Linux
On sdb there is a Boot column but not on the sda drive, is this the issue?