Fix the regexp evilness so that fdisk can (again?) find the device root is on from the root mount path.
Fix the regexp evilness so that fdisk can (again?) find the device
root is on from the root mount path.

Spotted by:	imp

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase