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I tried to dual bolt win10 and ubuntu 15 and now it says grub rescue no such device: 906f6cfd-803q-4ac7-af57-896c9f334a5f

Noah Duley
  • 13

1 Answers1

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Boot into a Live CD/DVD/USB of ubuntu.

Then open up a terminal window. run these commands replace /dev/sda with your Drive name.

to find you drive name run this command

sudo fdisk -l

output of the command should look like this: 

Disk /dev/sda: 232.9 GiB, 250058268160 bytes, 488395055 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0009dcf3

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1            2048 382078219 382076172 182.2G 83 Linux
/dev/sda2  *    382078976 487346175 105267200  50.2G 83 Linux
/dev/sda3       487346176 488394751   1048576   512M 82 Linux swap / Solaris

Where is says Disk /dev/sda at the start of the command that is your disk name. my disk name is /dev/sda when you run the command below copy or type in your device name at the end of these commands

sudo grub-install

then run

sudo update-grub

and then reboot.

Neil
  • 4,585