PDA

View Full Version : Ubuntu won't dual boot with windows 8



Martin_Kellner
October 17th, 2014, 11:17 PM
I can't get ubuntu 14.04 to dual boot with Windows 8. The word thing is, I can boot ubuntu from within windows using system settings, searching for bios and then choose ubuntu to boot from. How can I make my computer load grub from start?

yancek
October 17th, 2014, 11:49 PM
Did you use the wubi installer to install Ubuntu inside windows? Was your windows 8 preinstalled? Does it use UEFI to boot?

oldfred
October 17th, 2014, 11:59 PM
Did you install Ubuntu in BIOS boot mode not UEFI boot mode?

May be best to see details, post link to summary report.
Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
https://help.ubuntu.com/community/Boot-Repair

Martin_Kellner
October 18th, 2014, 08:05 AM
I used a usb stick to install, not WUBI. Windows 8 was preinstalled and I'm a bit uncertain i ubuntu tries to use UEFI. In boot repair, the separate boot/efi partition is ticked and set to sda2.
If I boot into windows, choose restart while pressing shift key I will be given the choice to boot into ubuntu. Choosing that, I will get somthing that looks like grub and ubuntu will boot fine but it's really annoying having to go through windows.

Summary report: http://paste2.org/AgAjmngW

yancek
October 18th, 2014, 03:19 PM
I've read a number of posts indicating that with an HP computer uses EFI differently, apparently needs windows files. Not really sure as I don't use UEFI but maybe someone else more familiar can give you details.

oldfred
October 18th, 2014, 06:02 PM
It seems hp firmware do not allow you to boot anything other than windows. Hence no ubuntu option in the UEFI. To work around it
http://ubuntuforums.org/showthread.php?t=2227889
1) press esc key while booting to access start up menu 2) press F9 for boot devices menu.

HP 4545s Secure boot off, manually copy files.
http://ubuntuforums.org/showthread.php?t=2133796
HP Manually renamed files to make it work.
http://ubuntuforums.org/showthread.php?t=2131886

Most seem to do the rename of bootx64.efi and make that file really be grub. Then you can set UEFI to boot hard drive.


http://ubuntuforums.org/showthread.php?t=2234019
http://askubuntu.com/questions/486752/dual-boot-win-8-ubuntu-loads-only-win/486789#486789
http://askubuntu.com/questions/507013/windows-8-1-changes-boot-order