[CentOS] boot failure after install

[Johnny Hughes]

On Wed, 2005-06-29 at 08:26 -0500, Johnny Hughes wrote:
> On Wed, 2005-06-29 at 14:02 +0100, Stephen Westrip wrote:
> > Dear P.,
> > 
> > Yes, this has happened EVERY time I have installed CentOS 4.0 (the only 
> > version I have ever installed). I also boot up into rescue mode and then 
> > issue just one grub command,
> > 
> > grub-install /dev/i2o/hda (or whatever your device is called)
> > 
> > This fixes the problem permanently.
> > 
> > 
> > Stephen Westrip
> > MetaFour
> > 
> > 
> > 
> > 
> > Peter Farrow wrote:
> > 
> > > Dear All,
> > >
> > > I have recently had a bad experiences with Centos 4.0 and 4.1 when 
> > > installing onto mirrored IDE drives using software mirror.
> > >
> > > The install goes through ok, but when the system comes to reboot, it 
> > > seems the boot loader fails.  I've seen fail on the first reboot or 
> > > after a random number of reboots, across different hardware as wide 
> > > and varied as you can get, the common factor is software raid, 
> > > (mirrored drives).
> > >
> > > It either fails just displaying "GRUB" or fails with a flashing cursor 
> > > at the bootup time.
> > >
> > > Booting a rescue cd, doing a chroot /mnt/sysimage and then the 
> > > following grub commands fixes the issue permanently, so that it never 
> > > fails again,
> > >
> > > grub
> > >
> > > grub-> root (hd0,0)
> > > grub-> setup (hd0)
> > > grup-> root (hd1,0)
> > > grub-> setup (hd1)
> > > grub-> quit
> > >
> > > it seems to me the Anaconda installer doesn't do something quite right 
> > > which leads to this random style failure.  Its only random as to when 
> > > it will do it, unless you do this, it will do it at some point.....
> > >
> > > I've been doing Redhat for many years and never seen this problem 
> > > before......anybody else seen this
> > >
> > > P.
> > >
> 
> Just so you don't think this is a CentOS only issue:
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149587
> 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149064
> 
> Also ...
> 
> Grub does not write to the mirror drive ... which can cause issues.  It
> is recommended that you do a grub install (or Peter's solution) on both
> drives on your first reboot after a software mirror install. (Or put
> something in your ks file to do it post isntall for kickstart).


Also ... this isn't always a problem on all hardware during a normal
boot, but it is always a problem on any hardware if you boot from the
raid mirror drive.  So fixing it prior to placing the Raid machine into
service is a good thing.
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