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i have a dual boot between ubuntu 14.04 and windows 8 but i installed windows 7 now i cant boot with ubuntu or windows 8 even the grub cant load the three OS's

Ȝîmǟd
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1 Answers1

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Two methods for it. 1) Use windows disk and boot from windows7 disk. after that start up repair then open CMD and type chkdsk then restart PC.

2) Install Grub into Ubuntu (not need any bootable disk)

  • sudo grub-mkconfig -o /boot/grub/grub.cfg, if your grub.cfg is at some other location then replace the path in the command with your file location.
  • Type sudo grub-install /dev/sda where sda is my primary HDD having Windows and Linux installed.


restart PC it solve your problem. I recommends you second method to solve problem.

my answer source

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Madhav Nikam
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