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On Wed, Oct 5, 2011 at 1:54 PM, walt <w41ter@×××××.com> wrote: |
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> On 10/05/2011 06:29 AM, Michael A. Koerber wrote: |
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> |
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>> Just tried root=PARTUUID=.... failed. Checked my genblk.c and the |
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>> changes don't appear in the 2.6.36 or 2.6.39 kernels on my system. |
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>> When did (does) the PARTUUID syntax support get released? |
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> |
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> This is very obscure and confusing if you don't already know the |
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> history of that code. |
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> |
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> You might think, as I did, that PARTUUID stands for the UUID of the |
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> partition you're searching for -- not true :( |
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> |
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> PARTUUID stands for Partition Table UUID, which is entirely different |
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> from a Partition UUID. Clear as mud, eh? |
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> |
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> Only GUID/EFI partition tables have a UUID -- not DOS partition tables. |
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> |
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> I posted a HOWTO on the subject here: |
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> |
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> http://www.gossamer-threads.com/lists/gentoo/user/225071 |
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There were some patches posted a few months ago in LKML, not sure if |
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they are in mainline kernel yet, but they allowed for this syntax: |
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|
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root=PARTUUID=UUID/PARTNROFF=%d |
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|
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where %d is the partition number offset. Basically it lets you choose |
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the Nth partition within the specified partition table UUID. |
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