how to create a OSX recovery partition

for LION.
how to create a recovery partition when none exists.

from http://apple.stackexchange.com/questions/19145/how-can-i-create-or-recreate-a-lion-recovery-partition

First, open a Terminal. Status before: $ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *128.0 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 127.8 GB disk0s2 Get Lion Recovery Update v1.0 (431.91 MB) Mount RecoveryHDUpdate.dmg $ hdiutil attach ~/Downloads/RecoveryHDUpdate.dmg Extract data from RecoveryHDUpdate.pkg $ pkgutil --expand /Volumes/Mac\ OS\ X\ Lion\ Recovery\ HD\ Update/RecoveryHDUpdate.pkg ~/Desktop/RHD Mount RecoveryHDMeta.dmg (in the RecoveryHDUpdate.pkg package) $ hdiutil attach ~/Desktop/RHD/RecoveryHDUpdate.pkg/RecoveryHDMeta.dmg Run tool that will finally resize current partition and create recovery $ ~/Desktop/RHD/RecoveryHDUpdate.pkg/Scripts/Tools/dmtest ensureRecoveryPartition / /Volumes/Recovery\ HD\ Update/BaseSystem.dmg 0 0 /Volumes/Recovery\ HD\ Update/BaseSystem.chunklist Creating recovery partition: finished Status after: $ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *128.0 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 127.2 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3

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also
furthermore
and not withstanding etc...
this other page also incorporates a non-functioning or broken recovery partition. removing and merging said partition then building a new one.

http://derflounder.wordpress.com/2011/10/22/removing-and-rebuilding-a-malfunctioning-recover-hd-partition/



there also seems to be a script to do all this as well.

http://hints.macworld.com/article.php?story=20120316132618149