[Bug 335174] Re: Machines with > 16 drives not supported

[Phillip Susi]

It seems to work fine these days with grub2.  Installed to /dev/sdq in a
vm.  The code Collin identified as problematic appears to have been
removed.


** Changed in: grub2 (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/335174

Title:
  Machines with > 16 drives not supported

Status in “grub” package in Ubuntu:
  Triaged
Status in “grub2” package in Ubuntu:
  Fix Released
Status in “lilo” package in Ubuntu:
  Fix Released

Bug description:
  Installations of Ubuntu on machines with more than 16 disks are
  currently not (fully) supported. If the boot device is not within the
  first 16 scsi block devices (/dev/sd[a-p]), the installation of boot
  loaders grub/grub2 and lilo fails.

  <cjwatson> that sounds   /* The rest is SCSI disks.  */
  <cjwatson>   for (i = 0; i < 16; i++)

  <cjwatson> wow, lilo has the exact same limitation, 16 disks

  Log excerpt from a grub installation attempt with boot drives /dev/sdy
  and /dev/sdac:

  Feb 26 21:30:44 grub-installer: Probing devices to guess BIOS drives. This may take a long time.
  Feb 26 21:30:45 grub-installer: /dev/sdy1 does not have any corresponding BIOS drive.
  Feb 26 21:30:45 grub-installer: error: Running 'grub-install  --no-floppy  "(hd0)"' failed.
  Feb 26 21:30:45 debconf: --> SUBST grub-installer/grub-install-failed BOOTDEV (hd0)

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