[ILUG] Boot partition too small - need grub advice

[Conor Daly]

On Mon, Jun 16, 2008 at 09:56:55AM +0100 or thereabouts, John A. Kinsella wrote:
> Hi all.
> 
> My boot partition is too small - Ubuntu Synaptic Package Manager reports:
> 
> "The upgrade aborts now. The upgrade needs a total of 62.9M free space on 
> disk '/boot'. Please free at least an additional 3921k of disk space on 
> '/boot'. "
> 
> >df
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/sdb2              1919892    569659   1247833  32% /
> /dev/sdb1                97826     34996     57611  38% /boot
> 
> 
> My first thought was to dispense with the /boot partition entirely;
> 
> cp -R /boot /BOOT
> umount /boot
> mv /BOOT /boot
> 
> Then edit /etc/fstab to remove /boot entry.
> 
> But then I started wondering how grub would react.
> Does grub care whether /boot is a separate partition - do I need to 
> regenerate the various grub config files before rebooting?

Grub won't like it.  It's generally pretty flexible but it needs to get its
stage1.5 off the boot partition.  When you grub-install, stage1 is written
to the MBR along with the pointers to /boot for stage1.5 etc.

If you remove the partition, it should be sufficient to 'grub-install
/dev/sdb' afterwards.

Conor
-- 
Conor Daly,                   
Met Eireann, Glasnevin Hill,  
Dublin 9, Ireland             
Ph +3531 8064276 Fax +3531 8064247

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