A bootloader is a small program that gets executed at startup time. The bootloader loads data and other startup process into RAM where they can be executed.

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Grub2 doesn't recognize any new partitions?

I am trying to add a new partition to my drive. The drive contains files that grub can boot into (Live ISOs, or Windows Installers). My drive has 250 GB unallocated and has in the past.. Grub2 booted ...
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12 views

Problems booting Windows 10 over Ubuntu Mate 16.04 LTS

I had Windows 10 installed on my computer, but it started having some issues, and I decided to completely erase Windows and install Ubuntu. However, I want to revert back to Windows and set up a ...
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10 views

“Error builduing boot sequence. Check parameters” message on Grub Customizer. What to do?

I'm a new Ubuntu user and I've been trying to boot from an ISO using Grub Customizer. I open Grub Customizer and try to add the Linux-ISO but when I choose the name and the Linux-ISO type, a message ...
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21 views

Multibooting different distros

As in this post (https://www.linux.com/answers/how-can-i-dual-boot-two-or-more-linux-distros) I would like to multiboot linux ! I am on a Dell Vostro 3550 laptop with 1tb HDD, I am not a complete noob ...
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1answer
21 views

Is this simplified flow chart of how the ubuntu fire up is correct ?

I am trying to understand the way that Ubuntu starts what is being runned or started. Can you please confirm if my simplified flow chart is correct ? First we power on a computer with linux ...
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1answer
25 views

Grub Rescue prompt appears after deleting Ubuntu partition. Can't boot Windows

I have an HP Pavilion dv 9543 cl. I decided that I wanted to update Win Vista to Win 8 several years ago, but did not know how to remove grub 2, so I naively decided to simply remove the Ubuntu ...
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1answer
20 views

UBUNTU14.04 could not be loaded due to GRUB Error

I installed UBUNTU14.04 in ACER Laptop after completing the installation the GRUB is not working, How can I install the GRUB separately?
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1answer
39 views

Unable to boot in ubuntu after install [Reboot and Select proper boot device]

I am using Samsung RV513 laptop. I recently installed Ubuntu 16.04 LTS and was working fine. Then I reinstalled Windows 7. After a few days, I reinstalled Ubuntu 16.04 LTS. Now whenever I start ...
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31 views

Unable to get to POST/BIOS settings after installing 16.04 LTS 64-bit Desktop

Just installed Ubuntu 16.04 LTS 64-bit Desktop on a Gigabyte GA-Z87X-UD3H motherboard with a Samsung 850 Pro SSD (MZ-7KE512BW). On install, I selected UEFI DVD (had disabled Secure Boot/Fast Boot and ...
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2answers
43 views

GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted

I have a Ubuntu 14.04.02. As I updated it,there was booting problem on my laptop.After some try it started.How I don't know.So I started fixing my grub as it was also not working. So after seeing some ...
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49 views

GRUB boot loader(Ubuntu) not working after updating

I have a system with ubuntu-14.04.2-desktop-amd64 installed. It has stopped booting up after updating. As I power on it, screen glows for 1 sec and it shuts down. I have tried to open GRUB boot loader ...
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26 views

Ubuntu doesn't boot after installation [duplicate]

For unknown reason Ubuntu doesn't boot. I have tried the boot-recovery but nothing happened. Also I want to dual boot with windows Specs: Lenovo essential g505s Amd A8-5550M amd Radeon hd 8550G ...
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43 views

boot-repair after linux installation, without internet connection

I have a tablet dell venue pro 11 with Windows 8 pre-installed and I installed Ubuntu 16.04 LTS on dual boot. Before installing, I partitioned directly from the linux usb stick, I created three ...
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33 views

Dual Boot messed up, Windows 10 and Ubuntu 14.10

-- Noob Warning I had Windows 10 running and tried to install Ubuntu 14.10, took the custom partition route. Shrinked the Windows drive from 100GB to 80GB, gave 6GB to swap (RAM 4GB), and ...
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249 views

Unable to install Ubuntu 16.04. Bootloader not working

I have installed Ubuntu 16.04 without any other OS's on the drive using LIVE USB.. But OS is not working. I tried Bootrepair but no luck to fix it.. This is bootinfo http://paste2.org/Ca5aOyHa . can ...
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7 views

Grub2 Alternative [duplicate]

Is there any other bootloaders that work well for Windows 10, Ubuntu, and live ISOs? I don't have a problem with grub2, just interested in other options.
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1answer
28 views

HDD boot repair

I just used boot-repair tool in Ubuntu and I applied MBR option … and when I reboot my laptop, it won't boot hard drive. A black screen appears with a cursor beeping and my whole system stucks there … ...
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35 views

No bootable device found in Ubuntu 14.04 with LVM encription (boot-repair-log attached)

Everything goes ok until the computer was blocked, I have restarted it and seen the errror No bootable device found With boot repair disk https://sourceforge.net/p/boot-repair-cd/home/Home/ on a live ...
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32 views

How Do I Change the Boot Loader to Load Ubuntu on a Different Hard Drive in Windows 10?

I've just done a successful installation of Ubuntu onto a brand new hard drive, but now I don't know how to load the Ubuntu OS. It does not show up when I boot my computer in the "Choose an Operating ...
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73 views

how to speed Ubuntu 16.04 LTS bootloading time

Good day fellas, I recently replaced windows 10 with Ubuntu 16.04 LTS OS, now it is taking taking too long to boot. Below is the link I got after running boot-repair recommended settings ...
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12 views

What Encrypted Ubuntu HDD does to Bootloader?

I installed 16.04 as encrypted such that I encrypted the whole disc in Lenovo-2013 PC. I am using the disk as hot plug. Now, I cannot use my other discs in the PC. I think this is because of the ...
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1answer
65 views

Cannot boot with EFI

I was having problems with repairing my boot loader (grub). My GParted config looked like: I installed another Ubuntu to the free space which restored my grub. But when booting into my old ...
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12 views

Access to hard-drive when machine won't boot

Recently I tried to downgrade my kernel (from 3.13 to 2.6.24), and I made sure that the 2.6.24 kernel compiled and installed without any errors. I also updated the grub file to boot with the newly ...
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1answer
68 views

Restore Windows loader after deleting partition

I am just install Ubuntu 16.04 alongside Windows 8.1, but while installing i deleted Windows reserved partition. I installed Ubuntu in UEFI mode, but i not sure, that windows installed in UEFI. ...
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2answers
88 views

How to reinstall GRUB bootloader for 14.04 after upgrading to Windows 10 [duplicate]

What do I do to reinstall the GRUB boot-loader, since I heard the Windows boot-loader overwrites GRUB.
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50 views

Ubuntu is not booting after re-installation of Windows in dual boot system

My laptop was dual booted - Windows 7 (32 bit) along with Ubuntu 14.04 (32 bit) LTS - and I used it without any problems. Due to Windows performance issues I had to format windows primary C:\ ...
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2answers
266 views

Grub Failing to install - Installation crashes

I have tried multiple times to install Ubuntu 16.04 LTS on my Mac Book Pro 2011 with a TakeMS SSD and a Hitachi HDD. The problem is though that it copy's files and that fine but as soon as it gets to ...
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1answer
74 views

Can't boot Windows 7 from USB, GRUB still there

I need to install Win 7 on a computer that previously had Ubuntu 14.04 installed. I created a bootable USB with the Windows 7 ISO on it, but I can't boot from it. From the BIOS/UEFI (not sure) I ...
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22 views

Stop Ubuntu on Macbook from booting into OS X from external drive

I have Ubuntu (Lubuntu) installed on a MacBook which has two external hard drives connected to it. One of the partitions on one of those drives is a bootable backup of an OS X machine. When I reboot ...
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1answer
52 views

Cannot boot to Windows 10 after failed installation of Ubuntu!

I was trying to install Linux for a Linux course and now I am stuck. First of all Ubuntu doesn't get installed completely. So every time I restart the computer it asks me if I want to install Ubuntu ...
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32 views

Grub rescue mode, bios in order, won't boot from window 7 recovery CD nor Ubuntu 14.04 live cd, nor usb key

Alright. I have (had) an Acer Aspire 4739z. Dual boot Windows 7 and Ubuntu 14.04 I have a grub rescue mode problem since booting in Rescue Mode (by mistake of course). And now the fun starts. My ...
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1answer
30 views

grub error when booting ubuntu

I have 2 hard drives on my server and i have previously installed CentOS on one of the hard drives(not sure which but i am guessing the second) I install fresh Ubuntu 14.04LTS on the first one i ...
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1answer
41 views

Questions for Dual Booting Ubuntu 14.04 + Win10 with Multiple Hard Drives

I'm trying to dual boot Ubuntu 14.04 onto my desktop that's currently running Win10. I've only dual booted on machines with a singular HDD years ago, but now I have a small SSD (for my Win10 OS and ...
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1answer
34 views

Installing Ubuntu over existing windows 7?

I already got windows 7 installed on my laptop with 3 drives C: D: E: and I also wanted to install Ubuntu on the same drive C: and make it a dual boot. How to do it ? is it possible ? And will I ...
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19 views

Ubuntu's boot loader is signed by a key in order to boot in secure boot mode. Is this key embedded in all UEFI firmware computers by default?

Most new computers are secure boot locked and it is not possible to add your own custom key.
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1answer
25 views

Unable to dual boot windows 8.1 with ubuntu 14.04

I m new to this forum and to linux. I have windows 8.1 pre-installed in my HP 15-r007tx and I wanna make it dual boot with ubuntu. But last I tried I finished installing ubuntu based on a few videos ...
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1answer
178 views

Removing Ubuntu with Windows 10 [duplicate]

I have ubuntu installed (dual-boot with Windows 10) on my laptop and my PC, but I noticed that I only really use it on my laptop, so I decided to remove it from my PC and attempt to switch back to the ...
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1answer
37 views

GNU GRUB Ubuntu option gone!

Hi there I seem to have a serious problem that google wasn't able to help me with. I'm a novice with GNU systems. I was clearing up some space on my boot folder (which of course what I think went ...
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17 views

How to solve the error starting version 219?

My Ubuntu 15.04 is showing "starting version 219". I can't login to my system. What is this? Is this a bug of Ubuntu? How do I can solve this issue? Please help me.
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22 views

Creating boot partitions on multiple disks

I'm trying to get some redundancy with RAID1 on my Ubuntu Server box. I've made some good progress using the install wizard but I'm stuck on the following: >> lsblk NAME ...
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1answer
101 views

How to remove Windows 7 (loader) without losing data?

I've installed Ubuntu 15.10 in my laptop after removing Windows 7. Even after removing Windows 7 completely during Ubuntu installation I always get an option of Windows 7(loader) & other Ubuntu ...
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0answers
22 views

Win 8.1 UEFI + External HDD Ubuntu - Bootloader directory

I would like to install Ubuntu 14 on an external Drive for use alongside my UEFI Windows 8.1 System, however I am unsure of where exactly to install GRUB. The external hard drive Im using is also ...
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0answers
27 views

Boot time is too long after uninstall Ubuntu from computer

I have 3 OS on my laptop Window 10,Ubuntu 14.04 and Ubuntu Mate.. I uninstalled Ubuntu 14.04 from the computer after that ubuntu mate's boot time takes nearly 5 minutes.. Before I uninstall ubuntu ...
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1answer
115 views

Recover windows 10 EFI Boot from dual boot with ubuntu

I made my window 10 system system in dual boot with ubuntu. I would like to remove ubuntu and install it in virtual-box within windows. I am afraid to remove ubuntu partions fearing windows may not ...
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34 views

Kernel problem, how to downgrade

I am using Ubuntu 15.10. uname -r 4.2.0.30-generic. But this kernel is installed partially with errors and my boot loader got default updated to that. I have Linux image ...
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1answer
23 views

Kubuntu installer will not offer uefi option but did once

Where to install boot loader. Kubuntu installer offered uefi...worked. Now after crssh on reinstalling only offers reserved BIOS area for grub but then won't boot - no drive shows
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2answers
234 views

Having trouble installing ubuntu alongside windows 10

I want to install Ubuntu alongside Windows 10, but I keep running into trouble. First I tried to create a bootable USB drive, to test Ubuntu, and then install it. While creating the bootable drive ...
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66 views

How to dualboot Ubuntu and Windows (as default) with minimal delay on boot?

I know there are some other questions here similar to mine, but i think my problem is a little bit different. So I currently have Windows 10 as my only OS, and I want to install Ubuntu on dual boot; ...
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2answers
302 views

Computer won't boot without external hard drive (now won't boot at all “Boot Device Not Found”)

The hardware involved is a HP Spectre x360 laptop (running windows 10 - at least it was :[ ) and 1TB WD Passport Ultra External Hard drive. Scenario: I am attempting to create a external hard drive ...
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0answers
23 views

Cannot install Lubuntu from pendrive

I cannot install Lubuntu as the second system (on the same hard disk) next to Ubuntu 14.04. I've tried to create bootable pendrive by using unetbootin and when I`m trying to install OS, my laptop send ...