[CentOS] boot failure after install

[alex at milivojevic.org]

Quoting Johnny Hughes <mailing-lists at hughesjr.com>:

> That is just how I do it ... and it works for Raid1 or Raid5 :)

Are you saying your /boot2 is RAID 5?  You will not be able to boot of it, in
case disk with /boot fails.  Whatever partition contains kernel and initrd
images, must be either normal partition or two component RAID 1 (2+ component
RAID 1, usually called RAID 0+1 and RAID 1+0 will not work).  In case it is
RAID 1, it works since each component of RAID 1 can be accessed as "normal"
partition by boot loader (since boot loader only reads, and do not write, this
is OK).  For any other RAID configuration, components can not be accessed as
"normal" partitions, the data on the volume is accessible as RAID only, and
boot loaders are not capable of doing something like that.

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