Comment 0 for bug 973486

From bug #972221 comment #4:

I get this message at boot after the most recent grub update. I didn't get it before and didn't see any errors when updating grub. (It did ask and overwrite my /etc/default/grub which I had modified.)

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Unlike the reporter of that bug, I still see this with version 1.99-21ubuntu1 of the grub packages. It doesn't come up every boot, but every once in a while (may be connected to whether I reboot to/from Windows or do a hard boot, but can't say for sure).

The exact error message is:

"error: invalid blocklist

Press any key to continue..."

This message comes up after the Ubuntu kernel has been selected. Pressing a key lets the boot continue normally.

Additionally before the grub screen comes up a black screen with the message "error: invalid blocklist" repeated twice flashes by quickly.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: grub2 (not installed)
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Wed Apr 4 18:33:46 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120319)
ProcEnviron:
 TERM=xterm
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)