Originally Posted by TB0ne
Devices are created when the system boots/is built. The /dev/sdb1 is a partition...the actual device is /dev/sdb, so look for that. If it's not there, then your drive may be unplugged or has died. Replace the drive, or fix whatever the problem is. Also, since you're using RHEL...have you contacted RHEL support, since RHEL is a pay-for, commercial distro?
Thanks for your feedback.
I ran 'fdisk -l' again, but it still wasn't picking up the sdb1 device
I then ran 'fdisk -l /dev/sdb/' and this somehow worked!
Ran 'fdisk -l' again and now can see the sdb1 device