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In the end I tried tapping both shift keys really fast on a system boot. This would only bring up the menu about one time in five. I think it's because the mohterboard is so new and so very fast at getting to the bootloader stage. Then I chose to go into rescue mode and then from the menu when to a root prompt. After getting a root prompt I did the usual.. ...


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I'm also experiencing this with 14.10. It seems to be the latest kernel i believe that is causing this as prior to updating it everything was functioning correctly. Also did a reinstall of 14.04 and everything worked as intended then did live upgrade to 14.10 and issue reappears. Another thing I noticed was that when I fdisk the drive that Ubuntu is ...


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If u can boot on to windows(with your usb stick),get easyBCD software and fix mbr from it,if you want to install ubuntu again,create a separate /boot and install grub to it,then use easyBcd to add boot menu entry to windows boot manager(you can remove it any time,you have many options)


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When I get to the stage you're at, I would whip out my backup and overwrite the partition. I take it you don't have one. In that case, if Gparted doesn't recognise it and you don't have a backup of the MBR (512 bytes), and windows rescue can't get it back then it's pretty dire. As a last resort, I would try testdisk (just google it), it's pretty lowlevel.


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You should boot your computer with a windows disc and choose command prompt option Then use the following commands to get the windows Master Boot Record back BootRec.exe /fixmbr you can also substitue the /fixmbr with these commands: /FixBoot. Writes a boot sector onto the system partition to start Windows /ScanOs. Scans all disks for Windows ...


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You must try Boot-Repair here : https://help.ubuntu.com/community/Boot-Repair it easy use and have solved most problems about grup rescue


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Those commands are fixing your problem temporarily. Try running this command from terminal when Ubuntu is running to try to fix the problem - sudo update-grub Running just this command should be enough for you, but if it isn't, you can run all three of these to try fixing your problem. [Replace X with your drive letter] sudo grub-install /dev/sdX sudo ...


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I am afraid your best bet is to get a livecd/dvd.(Try asking a friend) However if you anyhow manage to get back into Ubuntu you should reinstall grub by following thist tutorial: https://help.ubuntu.com/community/Boot-Repair


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I've experienced this problem before. Maybe you can try to boot with the live CD on the PC that causes problem and follow the guide to Boot-Repair here : https://help.ubuntu.com/community/Boot-Repair It worked for me on my Asus Laptop. Let me know if it works for you !


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boot a Live CD and reinstall grub2 by chroot'ing to the 'broken' system. Boot into Live CD Open Terminal (CTRL+ALT+T) Enter the following commands: sudo fdisk -l And find your Ubuntu partition (should be /dev/sda1 if it is the first partition) sudo mount /dev/sda1 /mnt sudo mount --bind /sys /mnt/sys sudo mount --bind /proc /mnt/proc sudo mount ...



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