tom_byrne wrote:I managed to get Mint 14 running from disk on my NP550P7-S05UK laptop (details below) however the boot procedure is rather convoluted.
I disabled Fast Boot and Secure Boot to install from DVD however after a reboot, instead of the grub loader I get a message to select suitable media and re-boot. (I think all this is "secure-boot-dysfunctionality").
I can boot to Windows 8 by resetting the original BIOS settings however I noticed that with Secure Boot off I can interupt a boot using F4 (recovery).
I then cancel the recovery and select restart and then get the grub loader.
sudo efibootmgr -v
viking777 wrote:Imho, the only chance you have with secure boot is to switch it off for approximately the next two years. Then switch it on again and see if anybody has got it to work by then.
tom_byrne wrote:I suppose Windows 8 requires secure boot to be on, so turning off SB in the BIOS effectively turns off W8
tom_byrne wrote:I tried enabling Fast Boot as you suggested but to no avail. I found that efibootmgr was not present so I loaded it. When I ran efibootmgr -v it complained that it could not get access to some folders.
I noticed that there was no /boot/EFI folder so perhaps what was wrong with the loader was that it was not there?
So I then took your advice and installed Ubuntu's Boot Repair. I think this installed a signed loader. It also advised that the location of the boot loader was too far from the start of the disk.
Now, when I boot with Secure Boot off I get the grub2 menu and can successfully boot to Mint or W8.
However, with Secure Boot on I now get a warning that an invalid signature has been detected.
despo wrote:After trying to install Linux Mint 17.1 to Samsung notebook (Intel core i5, RAM 64GB, 64bit), I encountered the same problem as Tom. The only way I was able to get the grub loader, was to press F4 for recovery, which would not work anyway, cancel the recovery, and wait a few min until getting the grub loader.
However, although selecting Linux Mint OS proceeds alright,
when I select Windows OS it gives me a terminal with the message "Reboot and select proper boot device or Insert boot media in selected boot device and press a key."
To conclude: no matter whether Fast boot is enabled or disabled, and no matter whether secure boot is enabled or disabled, the only way to get the grub loader is this trick with recovery. Even so, Windows cannot load if selected. Does this mean I have lost Windows?
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