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During start up I get

Error: invalid environment block. Press any key to continue...

I have done the steps of the first answer from the following link

Error: invalid environment block. Press any key to continue

Things are good for one restart. On the second, the grub message comes back. Please let me know if you have an idea of what's going on. Thanks

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This seems to have a solution: bugs.launchpad.net/ubuntu/+source/grub2/+bug/439784 –  Rinzwind Feb 22 '13 at 8:56

1 Answer 1

This should solve it (at least temporarily):

# cd /boot/grub
# rm grubenv
# grub-editenv grubenv create
# grub-editenv grubenv set default=0
# grub-editenv grubenv list
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