Multiple Hardware RAID

fdisk is limited to the partition size it can create.
You have to use parted.
fdisk is good to see which disk is label which in the /dev/sdx
use parted to create your partition.
Normally I use the following sequence of commands
Code:
# parted
select /dev/sdx
mklabel gpt
mkpart primary 1 -1
exit
mkfs.ext4 -O ^has_journal /dev/sdx1
Don't use actual sdx replace with your drive as seen by fdisk
mkpart primary 1 -1 is supposed to partition 100% of the drive. You can use that accordingly or find a different command for what you want
 
fdisk is limited to the partition size it can create.
You have to use parted.
fdisk is good to see which disk is label which in the /dev/sdx
use parted to create your partition.
Normally I use the following sequence of commands
Code:
# parted
select /dev/sdx
mklabel gpt
mkpart primary 1 -1
exit
mkfs.ext4 -O ^has_journal /dev/sdx1
Don't use actual sdx replace with your drive as seen by fdisk
mkpart primary 1 -1 is supposed to partition 100% of the drive. You can use that accordingly or find a different command for what you want

Could I expand the partition I have already created /dev/sdb2?