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I'm running Ubuntu 11.04. I just don't understand it. It doesn't matter if it is a kernel upgrade, or an Adobe Flash update. The next time I restart my computer Grub2 breaks. All I get is a blinking "_". Then I have to boot into a live CD, mount my FS, run

sudo grub-setup -d /media/FS_NAME_HERE/boot/grub /dev/mapper/isw_blah_blah_blah

and then restart, then run

sudo update-grub.

  • It only happens when there is an update. Because if I don't run anything, and I make sure to run sudo update-grub after I reinstall it then I can restart as many times as I want--but only until I update something else.

  • I'm 70% sure everything still works after I install something new. If it'll help I'm running a Sony Vaio Z. There are 2 solid state chips on board that are in a raid0 array. I've never had this problem before I just switched back to Ubuntu.

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1  
Are you sure it only happens when you update something, not everytime you restart? –  Kris Harper Aug 26 '11 at 14:27
    
Positive. Because if I don't run anything, and I make sure to run sudo update-grub after I reinstall it then I can restart as many times as I want--but only until I update something else. –  Shibumi Aug 26 '11 at 14:28
    
Hmm, what about installing programs, not just updating? Or even just saving new files (a text document, e.g.) to your disk? Given the vast number of things that updates can change, I suspect that changes to your FS are causing GRUB to drop it. It's possible there's an issue with your RAID syncing after you make changes. –  Kris Harper Aug 26 '11 at 14:36
    
saving files works fine. I can still restart after that. I'm 70% sure everything still works after I install something new. If it'll help I'm running a Sony Vaio Z. There are 2 solid state chips on board that are in a raid0 array. I've never had this problem before I just switched back to Ubuntu. –  Shibumi Aug 26 '11 at 14:39
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Please post the results of Bootscript so that we can see the details of your current grub and disk setup. Also, can you confirm you have forced a fsck (sudo shutdown -rF now) on your disks: sourceforge.net/projects/bootinfoscript –  fossfreedom Sep 15 '11 at 13:29

3 Answers 3

Sometimes when the system is updated, it configures grub again. As I could see, you use a RAID array. You have to reinstall grub in the MBR of your array. That done, I don't think you will keep having this problem. Try BootRepair:

http://www.webupd8.org/2011/06/boot-repair-fix-ubuntu-boot-issues.html

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Are you by any chance using a Wubi installation? This is very common with Wubi however it should only happen after a Kernel upgrade.

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or, you just try something else [ trust me ist's even better ]

https://wiki.ubuntu.com/LightDM

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what has LightDM got to do with Grub2? –  fossfreedom Oct 10 '11 at 21:26
    
well, if its an annoying problem like that, why shouldn't you consider changin your DM ? but i see that my post wasn't right here, it was just a quick thought. i'm sorry. –  spheniscida Nov 15 '11 at 17:23

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