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Bug#470840: marked as done (debian-installer: Fails to install Grub on a RAID5 system)

On Mar 13, 2008, at 8:18 PM, Debian Bug Tracking System wrote:

On Friday 14 March 2008, Andrea Lusuardi - uovobw wrote:
I installed a debian stable system on a Pentium 4 machine with 4 320GB ide disks and the installation goes well, but when it comes to installing grub on the MBR i get an error and i cannot continue. The raid array is
set up like this:

Grub does not support RAID5, only RAID1 and RAID0. So you've asked it to do
something impossible. Lilo does not support RAID5 either.
The correct solution is to create a separate /boot partition.

As this is not an installer bug but user error (when you do manual
partitioning and use advanced options like RAID5 you're somewhat expected
to know their limitations), I'm closing your report.


Is this covered in the installation manual? (That's not a rhetorical question. I don't know. I've never needed to know, and not gone looking...) If it's not in the manual then it's a documentation bug, not a user error.


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