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From: "Andreas Krüger" <gkdneu@famsik.de>
To: grub-devel@gnu.org
Subject: Re: Probing misjudges ext2 partition as fat.
Date: Mon, 22 Sep 2014 08:56:26 +0200	[thread overview]
Message-ID: <541FC81A.7060407@famsik.de> (raw)
In-Reply-To: <20140921184101.07319546@opensuse.site>

> Unfortunately you destroyed any possibility to investigate it further.
> You should at least have saved beginning of partition.

I should have, yes.  Please kindly accept my apologies!

On the other hand, I did nothing to destroy the grub source code.

So I hope it is still possible to investigate grub's fs-probing code
for weaknesses.

(My personal guess and speculation is, if legitimate grub
developers don't do this analysis, less well-intentioned people
will happily do the job.)



Am 21.09.2014 um 16:41 schrieb Andrei Borzenkov:
> В Sun, 21 Sep 2014 13:03:37 +0200
> Andreas Krüger <gkdneu@famsik.de> пишет:
>
>> Hello, grub developers,
>>
>> my problem summary (lots of details follow below):
>>
>> My /boot file system lives on partition /dev/sda1.  This was an ext2
>> or ext4 file system (not entirely sure).  When doing some grub-install
>> work, this was wrongly recognized as fat.
>>
>> This resulted in a system that could no longer boot from hard drive.
>>
>> What helped in the end: Copying the files of /boot, umounting,
>> overwriting the start of /dev/sda1 with zeros, mke2fs -t ext2
>> /dev/sda1, mounting, copying the files back to /boot and running
>> grub-install again.
>>
> Unfortunately you destroyed any possibility to investigate it further.
> You should at least have saved beginning of partition.
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel



  reply	other threads:[~2014-09-22  6:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-21 11:03 Probing misjudges ext2 partition as fat Andreas Krüger
2014-09-21 14:41 ` Andrei Borzenkov
2014-09-22  6:56   ` Andreas Krüger [this message]
2014-09-22 19:04     ` Andrei Borzenkov

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