Comment 3 for bug 589483

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komputes (komputes) wrote : Re: installer installs grub into wrong mbr (usb device sda)

Hello John, I created a startup disk of ubuntu-9.10-server-i386.iso and another of ubuntu-10.04-server-i386.iso. They booted properly, installed properly and afterwards, both the system and key were still bootable independently without the need to rebuild the MBR.

I believe that since you are trying to install Ubuntu onto an HP cciss RAID array, the issue may be caused by debian-installer. Are you not able to tell debian installer to install to /dev/cciss/c0d0, or is it that the installer incorrectly assumes which disk should contain the MBR without giving the user the option to specify the drive to be used for the MBR. Could you also test if this issue is reproducible when no /dev/sd? devices are present (installing from the CD directly).

As this is not the standard use case for usb startup disks, developers of d-i should respond to this bug stating if supporting installation onto cciss via usb startup disk is a use case they would like to support.