Re: grub mishandles corrupt/missing primary GPT

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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On 09.12.2013 16:28, Phillip Susi wrote:
> On 10/23/2013 9:49 PM, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>> partmap module is size-critical and CRC32 verification is pretty
>> big. There are 3 problems with backup header:
> 
> The grub core no longer fits in 63 sectors in all but the most trivial
> configurations as it is,
Not true. I've checked: all configs not involving compressed fs or
diskfilter fit in 31K.
> and a 2048 sector embed area has been
> standard now for several years, so I don't think size is a problem.
> 
We're speaking abut GPT, nothing to do with MBR embed area.

My problem with that is that it increases complexity a lot in currently
simple code.
And also I had experience with backup header out of place due to disk
reconfiguration and primary header corrupted but still well enough to
have valid partitions. I could boot this system by using "gpt" linux
option. With proposed changes this system would become unbootable.


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