A Universally Unique Identifier is a device-identifying string that is 128 bits long.

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Booting problem after Mavericks installation: BootCache.playlist: 2 No such file or directory

I have updated my MacBook Air 2011 from the App Store to Mavericks but after the installation it doesn't boot up (spinning grey ball). Safemode or a new installation didn't help and verbose mode ends ...
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How do I match a disk UUID with a software RAID member?

I have one member of a stripe which is starting to fail, but hasn't yet thrown any errors that SMART can pick up on. Currently I'm getting errors like this: Aug 8 11:34:22 myhost kernel[0]: ...
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Is the UUID command missing in 10.8.2?

I just noticed that the uuid command is no longer working on my MacBook. One possibility is that it was removed when I upgraded to Mountain Lion. The man page is still available. man uuid Does ...
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How to get UUID with Python?

System Report will display the system's Hardware UUID in the format 01234567-89ab-cdef-0123-456789abcdef. Using the shell we can retrieve the same UUID: ioreg -rd1 -c IOPlatformExpertDevice | grep ...