GRUB2 is the next generation of the GRand Unified Bootloader (GRUB). Ubuntu has used GRUB2 as the boot loader since 9.10 (Karmic Koala). Commonly referred to as simply "GRUB".

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update-grub2 creates config for wrong boot hdd

My 16.04 runs with 3 SSDs/HDD. Ubuntu recognizes its own SSD as /dev/sdc and I guess therefore creates my /boot/grub/grub.cnf with update-grub2 as follows: set root='hd2,msdos5' if [ x$...
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1answer
59 views

Can I remove Windows Boot Manager from dedicated Ubuntu computer?

It appears that I stopped my Ubuntu-based system in mid-update. It later wouldn't boot. Through the use of this excellent resource: Grub2/Troubleshooting I got my system running again after running ...
3
votes
1answer
65 views

sudo update-grub doesn't work

When I run sudo update-grub, I get the below error: /usr/sbin/grub-mkconfig: 2: /etc/default/grub: /boot/grub/grub.cfg.: not found I have checked and can confirm that the /boot/grub/grub.cfg file ...
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0answers
32 views

Grub not showing on boot. Windows 10 and ubuntu dual-boot not working

I am using HP Pavilion 15 Notebook. It came with a Windows 8 and then I have now installed windows 10 on it(not upgrade). I deleted all the partitions i had and installed windows. After that, I ...
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0answers
19 views

Unknown filesystem after boot

when I turn on my notebook lenovo G580, its write unknown filesystem, its the same problem as this: http://stackoverflow.com/questions/34393502/windows-7-boot-error-unknown-filesystem-after-deleting-...
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2answers
96 views

Dell PowerEdge T20 won't reboot

I have a Dell PowerEdge T20 microserver running Ubuntu 16.04. Everything is working fine, except that it won't reboot cleanly. When I issue run the reboot command, the last messages displayed are ...
1
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1answer
42 views

What is the UEFI boot flow for Ubuntu?

I've read https://help.ubuntu.com/community/UEFI but I'm still puzzled with the flow of boot process in UEFI mode for Ubuntu. I understand that the first step is UEFI firmware will load bootx64.efi ...
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0answers
21 views

Ubuntu fails to boot when installed on msata ssd with an hdd plugged in

I have a lenovo y400 laptop. I have added a 250gb msata ssd with the existing 500gb hdd. The ssd has both windows 10 and and ubuntu 16. With the hdd plugged in, a blank screen is shown instead of boot ...
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0answers
41 views

Create a bootable USB drive for Mac AND PC

i have an USB Stick with a Ubuntu installation on it, so it is not a Live Boot USB Stick. I want to boot that stick (its using GRUB & non-GPT Table) on PC's with EFI/BIOS and on macbooks with EFI. ...
0
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1answer
67 views

Install Ubuntu 16.04 alongside windows 8

I have windows 8.1 installed on my PC which uses UEFI boot. I want to install Ubuntu 16.04 So I have create bootable USB with Ubuntu 16.04 and installed it successfully. and grub bootloader now is ...
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0answers
23 views

Windows bootloader from efi delete grub always

I have a problem. I have two HDD one with windows and one with ubuntu. I'm not able to install windows without efi because the installer doesn't boot up so i have windows with the efi bootloader ...
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0answers
21 views

Ubuntu isn't detected, but it's freshly installed. No other os

Sorry for my bad english. My ubuntu installation isn't detected anymore by uefi bios after i booted the live cd, opened gparted and run a check. Why? Also, i tried reinstalling grub and it can see my ...
1
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1answer
34 views

Re-enabling Grub 2 entry after having removed it with grub-customize

At the beginning my computer was equipped with Windows 10 that was installed on a SSD C:/ and had it's data on a 1 Tb D:/ . I've installed Ubuntu 16.04 64bits on the D:/ hardrive. I then changed the ...
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0answers
19 views

Not getting Windows 10 OS option in grub menu of ubuntu 16.04 LTS

Please help I need it because it has all my important files. Boot Info Script cfd9efe + Boot-Repair extra info [Boot-Info 26Apr2016] Boot Info Summary: =============================== => ...
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0answers
16 views

How do I find in which partition I have to install Grub?

I am constantly getting grub-iny/dev/SDA failed whenever I tried to install Ubuntu on my windows 10 UEFI with dual boot. I've tried running command grub-installation /dev/sda2 but I get error saying ...
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0answers
22 views

How to enable dual boot from 2 disks?

I installed the latest Ubuntu on a lenovo laptop with a 128GB SSD on /dev/sdb. After the installation, I added a new disk with windows 7 on it. Ubuntu recognizes it as /dev/sda. How can I make the ...
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1answer
18 views

Grub theme file location

Where should I place a grub theme file? I read grub manual and didn't find anything about exact folder to place it in.
0
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1answer
54 views

Fatal error : grub installation /dev/SDA failed

I am trying to install Ubuntu from past 3 days and constantly getting the above mentioned error. I have windows 10 with UEFI and want to dual boot it with windows using Ubuntu image in USB. For the ...
0
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1answer
41 views

How to extend my Linux partition?

I'm currently having a problem with reallocating partitions. I want to take some of Windows' space and give it to the Ubuntu partition. This is my partition list at the moment My partition map: ...
0
votes
1answer
20 views

Is it possible? Triple boot with 2OS'S on first hdd & 1OS on second hdd

I have Windows 10 & LinuxMint installed on 1 hdd/sda (3partitions-1 for windows. 2 for linux / & swap) i want to install UBUNTU 16 as a 3rd OS on my second disk /sdb. My question now is: What ...
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0answers
19 views

Cloned 16.04 from HDD to SSD, black screen with flashing underline on boot

I've done every GRUB fix under the sun and boot repair to no avail. Here's the kicker though. The SSD boots fine when plugged into the laptop via a usb adapter. The issue seems to be related to the ...
1
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1answer
59 views

How to boot into Windows Boot Manager from GRUB?

I recently dual-booted Windows 10 and Ubuntu. When I start my computer, the GRUB operating system list starts up. Ubuntu works fine, but if I try to select Windows Boot Manager, I get an error. Is it ...
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2answers
74 views

How to remove GRUB Nothing is Working!

I need to get back to Windows only, and after deleting the Ubuntu partition, GRUB shows up on boot. I can type exit to get into Windows but I don't want to do that every time I boot. I've been ...
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1answer
55 views

dell inspirion 7559 — ubuntu 16.04 booted up using `nomodese` to login screen successfully but desktop is now showing after logging in [duplicate]

I'm a very novice user of ubuntu, tried installing ubuntu on my dell 7559 15" laptop. Installed it successfully after some search, I had to press e and add the following line to grub bootloader ...
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1answer
11 views

Why did grub load show up on multiple machines?

I may have seen something like this before but not recently for sure. I have 2 machines running on Ubuntu 14.04. The machines are not the same. 1 is a laptop and 1 is a desktop. One of the ...
0
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1answer
22 views

How to uninstall Ubuntu and windows 10?

So I have a dual system windows and ubuntu. My booting is from GRUB. I want to have a fresh start, eg. uninstall both and then install window and make ubuntu in my virtual box. What steps should I ...
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0answers
22 views

Install Lubuntu with no existing boot partition [closed]

I've been having trouble throughout the past few days getting Lubuntu running on my laptop I use as a home server. It came with Windows but I installed a previous Lubuntu version alongside it. I ...
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0answers
30 views

Cant boot to ubuntu and windows after installing ubuntu in diffrent partition! [closed]

I have been told to post this URL: http://paste2.org/IDKZt061 I just installed ubuntu in diffrent partition to my windows and i cant reboot its showing me this message in a black screen: reboot and ...
1
vote
1answer
102 views

How to uninstall Ubuntu 16.04 running alongside Windows 10

After installing Ubuntu on my system, I can't access my Windows 10 OS. The system boots Ubuntu without providing a choice to boot into Windows. Is there a way I can have both or must I uninstall ...
0
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0answers
54 views

Not able to install Ubuntu 16.4 in dual boot with Windows10

I already had my safe boot disable and my boot preference was :- 1. USB 2. Windows OS SO I used win32DiskImager and made a bootable USB pendrive with Ubuntu 16.4 . I also created a disk partition ...
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0answers
29 views

Problem with GRUB configuration

I have this problem with GRUB (using Ubuntu 16.04 and Windows 10) grub-mkconfig no se pudo ejecutar satisfactoriamente. mensaje de error: /usr/sbin/grub-mkconfig: 11: /etc/default/grub: ...
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0answers
14 views

Live Ubuntu USB fails to boot at grub display

I have two custom computers that are hardware identical (except the power button). One CMOS is newer than the other (and FWIW both machines run 14.04 server). Both machines have i7 CPUs, 16 GB RAM, ...
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0answers
19 views

Uninstalling Ubuntu and the Boot up option

I had recently installed Ubuntu MATE and I had a few troubles with it so I decided to uninstall and play around with a few more distros. Now, when I uninstalled it(deleted partition and got rid of the ...
3
votes
1answer
82 views

Windows 10 update destroyed grub and ubuntu partition

I've been running Windows 10 alongside Ubuntu and Windows did an update that removed the GRUB loader. After running BootRepair, the message displayed changed to "An operating system wasn't found ...". ...
1
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1answer
62 views

Ubuntu 16.04 booting to emergency mode after updating windows 8.1 to windows 10 in dual boot

I updated my windows 8.1 to Windows 10 and then the grub menu was not appearing, it directly booted to Windows 10, I tried in cmd with this code ( bcdedit /set {bootmgr} path \EFI\Ubuntu\grubx64.efi )...
3
votes
1answer
211 views

startx doesn't work on ubuntu 16.04

I modified grub, so that whenever I boot, it starts in command line mode. However, when I type startx, it gives me a screen with the ubuntu background on it and my cursor is an x. I can open things ...
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0answers
127 views

Ubuntu 16.04 splash screen freeze

After a little while of having Ubuntu 16.04 (which I upgraded from 15.04) I keep on getting the splash screen to freeze after a few animations cycle of the dots where it end up like this: and ...
1
vote
1answer
38 views

Unnecessary entries in Grub2 Boot Menu

I just finished repairing Grub2 after a SSD-to-SSD clone. Now when I boot up I see the Grub boot menu, but I see several entries I hadn't seen before the clone. I've tried booting Ubuntu and Windows ...
0
votes
2answers
104 views

can't boot due to Shim UEFI key management tool

I have Toshiba laptop Portege Z930, core i7 with Ubuntu 16.04 (amd64) and Win 8 dual boot. During today's software update in Ubuntu the system hangs on. After reboot I see grub shell. I boot the ...
0
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0answers
69 views

How to repair GRUB? Boot-Repair not working, cannot access Windows 10

After deleting Ubuntu partitions from my computer's hard drive, I ran into a common problem. The system boots into grub rescue mode instead of booting into Windows 10. It appears I deleted GRUB, and I ...
0
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0answers
27 views

Multiboot missing after cloning SSD

I have a Windows/Ubuntu installation that was working fine. When my laptop booted I would get a solid purple screen with white letters offering me a choice of which OS I wanted to boot. Yesterday I ...
0
votes
2answers
49 views

Ubuntu will not install after using a live usb stick

I tried installing Ubuntu 14.04 once, and it was successful. However, after I booted my computer to a windows 10 usb drive, grub disappeared. I tried to retrieve it several times, but to no avail. I ...
0
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0answers
76 views

Ubuntu 16.04 and Windows 7

I have ubuntu 16.04 and windows 7 installed on different hard drives, ubuntu on SATA port 0, and Windows 7 installed on SATA port 1. At this moment if I need to use windows I have to go on BIOS and ...
5
votes
0answers
75 views

Recover Ubuntu 14.04 Encrypted Install

I have an encrypted install (Full drive, not only home directory) of Ubuntu 14.04 on a 1TB SSD. I do know the passkey to unencrypt everything. It's just a matter of finding the files now. Here's what ...
0
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0answers
48 views

Ubuntu Live CD persistence ISO on hard disk

I am trying to setup persistence while booting from a customized (uck) ubuntu Live CD ( 16.04 ) ISO which is stored on my hard drive ( hda ). My Grub configuration for the Live CD is as follows : ...
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0answers
43 views

Ubuntu won't boot from SSD

Previously I've had windows installed to a SSD in my laptop and ubuntu installed to HDD on it. Recently I've changed that HDD to SSD and installed ubuntu there as usual, but for some reason it won't ...
0
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1answer
31 views

Accidentally deleted Ubuntu volume from Windows?

I had Ubuntu dual booted with UEFI in my disk and I accidentally deleted that partition. I am still in Windows and haven't shut it down. Is there any way to fix this?
1
vote
1answer
41 views

How do I remove grub?

I was trying to install ubuntu on an external hard drive using my dads dell laptop because my laptop was being repaired. Anyways i used a bootable iso usb from unetbootin to install it. I have done ...
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2answers
699 views

Trouble installing Ubuntu 16.04 since I got GTX 1070

I was running ubuntu with windows, and once I got my GTX 1070, and installed the nvidia drivers on windows it caused Ubuntu to go black screen whenever I would load it from grub. Additionally my asus ...
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0answers
18 views

Dual boot: Black screen after purple screen with logo

I have Ubuntu 14.04 installed along Windows 8.1 running with GRUB2 in a MSI GE60, i7 with an nVidia GeForce GTX card. Out of the blue, today when I try to run Ubuntu, after the purple screen with the ...