[Bug 1069856] Re: error: cannot find a GRUB drive for . Check your device.map.

[Jason Straight]

Recently encountered this, and I turned up this page while searching for
solutions, and I hate to turn this into a "forum" post but I wanted to
leave this here for anyone else beating their head against the wall over
this.

On my afflicted system one of the partitions that was part of my btrfs
raid 1 array did not have a type. fdisk, changed the type to Linux and
grub was happy.

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Title:
  error: cannot find a GRUB drive for .  Check your device.map.

Status in grub2 package in Ubuntu:
  Expired

Bug description:
  i have STRIPE in bios (fake RAID0). was working fine on 12.04.
  but, during upgrade to 12.10 ... here is output.

  $ sudo update-grub
  Generating grub.cfg ...
  Found linux image: /boot/vmlinuz-3.5.0-17-generic
  Found initrd image: /boot/initrd.img-3.5.0-17-generic
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  Found linux image: /boot/vmlinuz-3.2.0-33-generic
  Found initrd image: /boot/initrd.img-3.2.0-33-generic
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  Found linux image: /boot/vmlinuz-3.2.0-32-generic
  Found initrd image: /boot/initrd.img-3.2.0-32-generic
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  Found linux image: /boot/vmlinuz-3.2.0-31-generic
  Found initrd image: /boot/initrd.img-3.2.0-31-generic
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for .  Check your device.map.
  Found memtest86+ image: /boot/memtest86+.bin
  grub-probe: error: cannot find a GRUB drive for /dev/mapper/isw_cijbaaefjb_Volume0p1.  Check your device.map.
  grub-probe: error: cannot find a GRUB drive for /dev/mapper/isw_cijbaaefjb_Volume0p2.  Check your device.map.
  grub-probe: error: cannot find a GRUB drive for /dev/mapper/isw_cijbaaefjb_Volume1p1.  Check your device.map.
  done

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: grub-pc 2.00-7ubuntu11
  Uname: Linux 3.0.24-std251-amd64 x86_64
  NonfreeKernelModules: raid10 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 raid0 multipath linear usb_storage nouveau ttm drm_kms_helper drm xhci_hcd r8169 mii i2c_algo_bit i2c_core mxm_wmi video wmi
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  Date: Mon Oct 22 17:50:33 2012
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  SourcePackage: grub2
  UpgradeStatus: Upgraded to quantal on 2012-10-22 (0 days ago)

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