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Re: Error: Unknown Filesystem

From: Chris Murphy
Subject: Re: Error: Unknown Filesystem
Date: Sat, 27 Oct 2012 12:17:44 -0600

On Oct 27, 2012, at 6:08 AM, Petro <address@hidden> wrote:

> Number  Start   End     Size    File system  Name  Flags
> 1      1049kB  200MB   199MB                boot  bios_grub
> 2      200MB   16.2GB  16.0GB  ext3         data

This is on UEFI hardware? Because a 200MB partition formatted vfat, the flag 
should be boot to make it an EFI System partition. Whereas if this is BIOS 
hardware, the flag bios_grub is for the GRUB core.img and only needs to be 1MB, 
not 200.

> address@hidden ~]# mount /dev/sdb1 /mnt/1/
> mount: you must specify the filesystem type

So I think what you've got is BIOS hardware, and upon installing GRUB, it 
overwrote sdb1 with the core.img which doesn't require a file system at all. 
And isn't mountable.

Your grub.cfg and associated mod files, etc need to go on sdb2. That's what you 
should mount and point the root directory to.

Chris Murphy

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