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Re: [parted-devel] [parted 1.8.8] msdos label and file system corruption

From: Michael Reed
Subject: Re: [parted-devel] [parted 1.8.8] msdos label and file system corruption issues with > 2TB disk
Date: Fri, 28 Dec 2007 12:41:25 -0600
User-agent: Thunderbird (X11/20070613)

H. Peter Anvin wrote:
> Michael Reed wrote:
>> What are the various protocols in use for booting from GPT partitions
>> on BIOS systems?  Trying to standardize on one could be a "good thing".
> So far, the only supported protocol is to have the bootable partition(s) 
> present inth the MBR.  Data-only partitions can be present in the GPT only.


> This is what Windows requires, with the slight exception that I think it 
> wants the partition present in *both* the MBR and GPT.  Could be wrong.

I would assume having it present in both, for both the bootable scenario
described above as well as the Windows scenario.  Linux searches for GPT
labels before it searches for MS-DOS labels. (fs/partitions/check.c)  Space
not defined in the GPT label wouldn't be known to the OS, and subject to
being overwritten.

Does parted offer any support for the PMBR/GPT bootable partition scenario?


>       -hpa
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