Public bug reported:

Tried to install ubuntu 11.10 alongside with Win7 on a asus p5n32-e sli
with nvidia raid on-board.

Have tried different types of raid configs and also installing with the
default "install with window7"

First times the installer went through, but only used 1 part of the mirrored 
RAID1 (although gparted in the installer detected the RAID1 as 1 disk ( 
/dev/mapper/nvidiablablabla) 
Reboot: Grub did not display the windows installation anymore, since Win7 was 
installed on both HDs mirrorde as it was a mirror. 

then, when making boot-repair from yanubuntu, this seemed to install
grub in the /dev/mapper/nvidiablabla MBR, but then the startup failed
from grub with: invalid environment block

So I reconfigured the RAID set to a raid0, cleared the disks with the raid 
manager, installed windows again. 
Started the installation with the ubuntu 11.10 cd again and.... grub failed to 
install on /dev/mapper/nvidiaxxxxx 

This happens with manual installation, with the guided install.

Also tried to install grub on a different partition, not on the
/dev/mapper/nvidiaxxxxx disk directly, but no success.

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: grub grub2 installer ubiquity

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https://bugs.launchpad.net/bugs/877986

Title:
  Ubuntu 11.10 fails to install on a nvidia onboard RAID0

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