How to view the hidden MacOS 10.7 Lion Recovery Partition
From Tech-Wiki
The recovery partition is hidden in both the Startup Disk system preference and the Disk Utility. To view:
diskutil list /dev/disk5 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *320.1 GB disk5 1: EFI 209.7 MB disk5s1 2: Apple_HFS LION BOOT DISK 319.2 GB disk5s2 3: Apple_Boot Recovery HD 650.0 MB disk5s3
In the example above slice 3 is the recovery parition.
To boot into this partition hold the ATL key when rebooting and select the Recovery volume or hold Command-R when rebooting to boot directly into the recovery partition.