[CentOS] RAID 1: missing operating system

[Aleksandar Milivojevic]

Quoting Fajar Priyanto <fajarpri at cbn.net.id>:

> Hi all,
> I'm trying to setup a RAID-1 with Centos4.2 on HP Netserver E60. The raid
> consists of 2 9,1GB SCSI disks.
>
> The partitioning and installation process went smoothly, but after it 
> finished
> and rebooting, there is an error: Missing operating system.
>
> The partition is:
> /
> /home
> swap

Miguel gave you a fix for this particular problem.  I'd just add that 
you might also consider having small /boot on separate partition (and 
make it the very first partition on the disk).  100-200MB should work 
perfectly fine.  Since your drives are relatively small, it won't make 
much difference (I guess your / is well within first 8 gigabytes).  On 
larger drivers you could have issues (depending on BIOS) -- for example 
everything works, than you upgrade the kernel and can't boot anymore 
(new kernel and/or initrd image ended somewhere on the file system 
above first 8 gigs).  It would also give you more options on how you 
want to create your / (for exmaple, RAID-5, RAID-10, on logical volume, 
etc).


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