Operating System Fundamentals Linux HDD size

Doing the Operating System Fundamentals Assessment, i am stuck on Question one of the VM exercise. ive searched for the size through GUI , searching in the Disks window. ive also used lsblk and df -H in command prompt. however none of these seem to have the correct answer. not sure what im missing

Try using fdisk instead of df etc.

Having the same issue, tried using the fdisk command too. saw the size of the disk in GiB then converted it to GB. still came back with the wrong answer.

I think the assumption was that GiB = GB. Try just putting in the number you see for GiB.

yeah you are right, thanks for your help