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View Full Version : Installing Xubuntu dual-boot along Windows 10. Cannot boot linux post-install



kurt-wheeler91
October 7th, 2016, 05:19 AM
I bought a new Acer Aspire E 15 laptop and I want to dual boot Xubuntu 16.04.1 LTS alongside the Windows 10 installation that it came with. I've been able to succesfully run the Linux installation vis a USB drive at least a dozen times, but once I restart the computer I cannot boot into it. I've installed Ubuntu on many computers before but they always used BIOS and this new UEFI madness that Windows 10 introduced seems to be the cause of the issue.

I've done a lot of research already and tried a lot of things so I'll cover what I have tried first:

Disabled Fast Startup
Turned off Secure Boot
Used efibootmgr to change the boot order so Ubuntu boots before Windows Boot Manager
Installed and ran boot-repair. It said an error occurred during repair and gave me this pastebin link: http://paste2.org/eONDG45A
Changed my boot mode to Legacy from UEFI. This made it so nothing booted and I had to go into the bios and change the setting back to even get Windows to boot again. From what I've read it looks like the only way to make my computer work in legacy mode is to reinstall Windows, which I'd like to avoid at all costs.


If anyone can provide any help it would be super appreciated. I've already spent a half dozen hours just trying to get Ubuntu installed and I'm really frustrated at this point.

kurt-wheeler91
October 7th, 2016, 05:28 AM
Wow I just got it to work literally 5 minutes after posting this!

The instructions on this page fixed it for me: https://itsfoss.com/no-grub-windows-linux/

boot-repair had suggested that I run that command but the issue was that I didn't run cmd as administrator. Stupid Windows just fails commands rather than prompting you to become an administrator to run them.

Geoffrey_Arndt
October 7th, 2016, 05:53 AM
Kurt . . it always helps to close out this thread as "Solved" (see Thread Tools at top of page).

Bucky Ball
October 7th, 2016, 06:06 AM
Kurt . . it always helps to close out this thread as "Solved" (see Thread Tools at top of page).

+1. Thanks. It will not close the thread for further discussion, just helps others.

'Thread Tools', as advised, or there is a link for how to mark as solved in my signature at the bottom of this post.

PS: Good news and well done. Climb that learning curve! :)

oldfred
October 7th, 2016, 03:45 PM
If an Acer you can also set UEFI password and enable "trust" on grub/ubuntu .efi files. This is unique to Acer UEFI.
Some Acer links may say to downgrade UEFI, but newer ones say newest UEFI from Acer works. So make sure you have newest UEFI from Acer.

Acer Trust Settings - details:
http://ubuntuforums.org/showthread.php?t=2297947&p=13369742#post13369742
http://ubuntuforums.org/showthread.php?t=2291335&p=13341757#post13341757
(http://ubuntuforums.org/showthread.php?t=2291335&p=13341757#post13341757)
Acer Cloudbook shows screen for selecting trust
http://bernaerts.dyndns.org/linux/74-ubuntu/340-ubuntu-install-acer-aspire-cloudbook-431
http://community.acer.com/t5/Predator-Laptops/Dual-Boot-Ubuntu-Win10-Step-by-step-guide/m-p/430392#U430392

Acer Aspire E15 will not dual boot, many details Trust settings in step 35
http://askubuntu.com/questions/627416/acer-aspire-e15-will-not-dual-boot
Acer Aspire E 15 Downgrade to older UEFI, password & trust (ACPI issues?)
http://ubuntuforums.org/showthread.php?t=2298380&p=13403062#post13403062

(http://ubuntuforums.org/showthread.php?t=2291335&p=13341757#post13341757)