What is Apple using to hide Lion Recovery, how can I duplicate it?
After installing Lion, it includes a recovery partition (Recovery HD). This partition is visible in the startup disk screen in the EFI (booting using option), however, it doesn't show up in finder, nor does it show up in Disk Utility (unless you have the debug menu, and enable show all partitions). Obviously it doesn't automount, that's one thing, but Apple is doing something to keep it from even showing up in disk utility.
Recently I upgraded my HDD in my Macbook Pro, I cloned it and so I lost the Lion Recovery utility. I've since added it back manually, and I'd like to place it in the same condition as it is when installed along side Lion (without having to go through migration on a fresh install, etc).
Does anyone know how to duplicate this state that the Lion Recovery HD is in?
I'm not really looking for alternatives - like reinstalling, etc, etc.. I'm also interested in the mechanism being used here.
Can anyone shed light?
Thanks!
I just found this outside thread:
Missing Recovery Partition After Cloning hard drive
http://forums.macrumors.com/showthread.php?t=1153706
From post #7 there:
You can set it to Apple_Boot using gpt and this is indeed what hides it from GUI apps like disk utility. Apple_Boot is just a hidden version of Apple_HFS; the recovery partition is just an ordinary journaled HFS+ volume that can be manually mounted with diskutil mount disk0s3 (or whatever slice the recovery partition happens to be).
To change a GUID partition type to Apple_Boot one needs to know the UUID -- which for reference is 426F6F74-0000-11AA-AA11-00306543ECAC -- and remove the partition using gpt then re-add it with the desired type. This won't destroy the data of course, but one needs to make a note of the start and size values of the partition (as shown by gpt show) before the remove and then use them when re-adding. See the manual page for gpt.
From post #12 there:
Through some accidental research (don't ask…), I found that Lion's version of Disk Utility will also restore the Recovery HD partition when using DU's Restore to image a Lion Partition. I verified this several times. If there is no Recovery HD, it will recreate an existing one from the source HD to the destination, and will be positioned immediately following the Lion partition.
If no Recovery HD exists in the source, but does in the destination, it will leave the destination alone. For instance, if you have an image of a Lion partition, but for some reason, no Recovery partition, you can do a clean install of Lion on the destination - creating a Recovery partition - then restore your Lion image to the destination (replacing the clean install). It will leave the recovery partition alone at the destination.
If no Recovery HD exists in either source or destination, I don't believe DU will create one - this is one scenario I didn't test.
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