Linked Questions

-1
votes
1answer
2k views

How do I convert my usb installation from legacy boot to uefi? [duplicate]

I installed elementary os onto a usb using legacy settings, and I can boot it using legacy bios options. However, I would like to switch the boot to UEFI so that I dont have to change my PC's firmware ...
1
vote
2answers
729 views

Dual boot Ubuntu 16.04/Windows 10 no longer booting [duplicate]

I'm running Ubuntu 16.04 and Windows 10 on 2 separate hard drives (no partitions, 2 physical hard drives). Two things have happened: I no longer get the GRUB boot loader screen which allows me to ...
0
votes
0answers
163 views

Converting Ubuntu to UEFI [duplicate]

Does anyone know of an Easy solution to dual boot Window and Ubuntu with UEFI after you have already installed Ubuntu or for that matter from the get-go? I have tried enabling CSM in my BIOS and using ...
1
vote
0answers
41 views

Lubuntu refuses to boot from HDD despite numerous tries with boot-repair [duplicate]

I remember problems setting up my Lubuntu with UEFI/Legacy boot mode. That was more than a year ago and the system worked fine - until now. For whatever reason, it refuses to boot again. I went ...
31
votes
1answer
245k views

How to install the Boot-Repair tool in an Ubuntu live disc?

When the bootloader (GRUB) is broken, I cannot access neither Ubuntu nor Windows. I heard that an easy solution to fix this is to use the Boot-Repair tool from an Ubuntu liveCD (or liveUSB). What ...
12
votes
3answers
45k views

How to install Ubuntu server with UEFI and RAID1 + LVM

I used to install my servers with LVM over software RAID1, and grub install on the MBR of both drives. Now I have an UEFI server, and the compatibility (BIOS) mode does not seem to work. So I went ...
14
votes
2answers
15k views

How to boot load the kernel using EFI stub (efistub) loader?

I have Ubuntu 14.04 running in UEFI mode as only operating system, no dual-boot here. The kernel version is 3.13.0-24-generic. There is an EFI partition. In this case the EFI partition is not at the ...
4
votes
1answer
27k views

Can I install in UEFI mode with the alternate installer?

I'm wondering if it's possible to install Ubuntu 11.04 UEFI mode with the alternate installer. I've read that only grub-efi is needed to boot in UEFI mode. How do I install that?
6
votes
2answers
11k views

“Error: Invalid signature” when configuring dual boot Ubuntu 14.04 and Windows 10

After installing the Windows 10 upgrade on my laptop, it ruined the grub boot manager, and I could only boot in windows 10. I fixed the boot manager using a live cd with the boot-repair tool, but it ...
2
votes
2answers
2k views

How to convert a Ubuntu BIOS install to EFI/UEFI without boot-repair on dual-Ubuntu boot hardware?

Previous configuration: Ubuntu 12.04 on /dev/sda [WD 2T HDD] Ubuntu 14.04 on /dev/sdb [Hitachi 2T HDD] ~10 years old PC in BIOS mode (no PC in EFI in 2006!), basic nVidia graphic card. The BIOS is ...
1
vote
1answer
3k views

Windows does not show in GRUB Customizer

I know this question has been asked several times, but none of the answers seem to be working in my case. I have win 10 and Ubuntu. but there is no dual boot menu. GRUB does not show in the bootup. ...
0
votes
1answer
4k views

Will BIOS boot mode Ubuntu install be able to boot when firmware “Fast Boot” is “Ultra Fast”?

I have an AsRock mainboard with UEFI BIOS P1.50 02/14/2014. The firmware "Fast Boot" option is set to "Fast", Boot Option #1 is set to "AHCI P4: OCZ-VERT...": this is BIOS not UEFI boot. This boot ...
1
vote
2answers
2k views

conflicting fb hw usage inteldrmfb vs EFI VGA - removing generic driver

I am using Ubuntu 14.04 AMD64 with Core i3-2100 and GA-H61M-DS2,I removed HIS 6670 iSilence 5 1GB recently because it crashed randomly on Ubuntu 14.04 AMD64 and removed fglrx by this How do I remove ...
0
votes
2answers
550 views

Forcing Ubuntu to boot in EFI mode

I have a Gigabyte motherboard with an "Hybrid-EFI" Award Bios. In the Bios, there's an option to boot from the DVD Drive in EFI mode, but no such option exists for for USB booting. I was able to ...
0
votes
1answer
138 views

Ubuntu XPS13 Sputnik boot order and Bios configuration?

I had a superblock issue on my Dell XPS13 Sputnik edition. Trying to get Ubuntu back booting. Does anyone know which partition it should boot from? Bios is set to Legacy should this be so? ...

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