Questions tagged [dual-boot]

Dual-boot is the process of having two (or more) operating systems installed on a computer, allowing one to be chosen during the boot process.

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Bluetooth Pairing on Dual Boot of Windows & Linux Mint/Ubuntu - Stop having to Pair Devices

When dual-booting Windows and Linux Mint/Ubuntu, you may find yourself having to re-pair your Bluetooth devices again and again. This will happen every time you switch OS. Now, how do you prevent this?...
Mario Olivio Flores's user avatar
106 votes
15 answers
720k views

GRUB starts in command line after reboot

I installed Linux Mint on my laptop along with a pre-installed Windows 10. When I turn on the computer, the normal GRUB menu appears most of the time: But after booting either Linux or Windows then ...
Antoine Aubry's user avatar
64 votes
13 answers
111k views

How can I tell GRUB I want to reboot into Windows—before I reboot?

I have a dual boot Linux/windows system set up, and frequently switch from one to the other. I was thinking if I could add a menu item in one of the menus to reboot directly into windows, without ...
jadkik94's user avatar
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59 votes
3 answers
36k views

Are there any side effects when two distros share a swap partition?

In order to save disk space, I want to have two OS installations share a single swap partition (a dual-boot). Is this a good idea?
tshepang's user avatar
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35 votes
1 answer
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Can GRUB2 share the EFI system partition with Windows?

I have an existing Windows 7 GPT installation, which already has a EFI System partition. I am now trying to install a Linux on a separate harddisk, which is also GPT formatted. I did not find any ...
crater2150's user avatar
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32 votes
8 answers
80k views

How can I prevent Windows from overwriting GRUB when using a dual-boot machine

I've been reading a lot about dual-booting, and it seems as easy as loading Windows and then loading Linux with GRUB, but everybody says that Windows loves to trash GRUB when it gets the opportunity. ...
Nathan2055's user avatar
30 votes
3 answers
59k views

Installing Grub 2 on a USB flash drive

MultiBootISOs is a tool that let you install Grub on a USB flash drive. I really like it because it lets me boot from ISO files and let me put a bunch of ISOs on my USB and choose which one to boot. ...
phunehehe's user avatar
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24 votes
6 answers
121k views

How do I change the GRUB boot configuration from within Windows?

I currently dual boot Windows 7 and Fedora 14, using GRUB, with Windows 7 as my default. I know that from Fedora, I can set GRUB to boot into Fedora, overriding the default, on the next reboot. Is ...
Jimmy Sawczuk's user avatar
23 votes
4 answers
88k views

Windows boot option is missing after installing CentOS 7, how can I get it back?

I recently installed CentOS 7 on a machine that has been running Windows 7. I did a dual boot installation and installed CentOS in a partition. But when I boot up my machine, it only gives me two ...
CodeMed's user avatar
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23 votes
7 answers
113k views

GRUB2: boot to a second (another) hard disk

I have researched for this question, but have not been able to find a clear answer... or even a clear question. So I will use a simple example. My computer have **two hard disks: ** Hard Disk 1: ...
Sopalajo de Arrierez's user avatar
20 votes
1 answer
92k views

Using Gparted and installing Windows 10 after Linux

I recently built a computer and put LinuxMint 17.3 on it right away. I now have a free copy of Windows 10. I haven't really been able to find detailed instructions on how to install Windows while ...
anthony's user avatar
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19 votes
2 answers
25k views

Dual Boot Bluetooth LE (low energy) device pairing

I'm trying to pair two bluetooth devices, a mouse and a keyboard on fedora 26. I also have Windows 10 installed. What I did was: pair them on linux then on Windows, but when I tried to insert the key ...
Gonzalo Castillo's user avatar
19 votes
1 answer
34k views

Dual boot windows on second harddrive, UEFI/GPT system

I'd like to install linux, but I don't want to risk damaging my current windows installation as I have heard a lot of horror stories. Fortunately, I have an extra hard drive. Can I install linux ...
goldilocks's user avatar
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18 votes
3 answers
5k views

FreeNAS grub2 booting ISO

I've got usb-keys setup to multi-boot different Linux images. I wouldn't mind adding FreeNAS, and there's a doc with samples to add to grub.cfg menuentry "FreeNAS-8.0.4-RELEASE-x64" { insmod ufs2 ...
Thermionix's user avatar
17 votes
3 answers
70k views

How to change default boot partition?

I installed Antergos on my laptop, then installed Ubuntu after that. Ubuntu detected that I had another Linux installed, so it added Antergos to its grub menu. Every time I boot up, grub is loaded ...
Chris's user avatar
  • 325
16 votes
2 answers
43k views

How to clean up bootloaders & UEFI entries from other installs?

I got a new Windows laptop, and I wanted to dual boot with Linux. I installed Fedora, before changing my mind and going back to Mint. I'd like to keep Win 8.1 and Mint. However, now my UEFI boot menu ...
Paul's user avatar
  • 261
14 votes
3 answers
10k views

Chainload two Grub2 installations

This is really getting me down. I have Gentoo and Ubuntu, both with Grub2. Gentoo has a dedicated /boot partition, while Ubuntu does not. I have a menuentry in Gentoo's /etc/grub.d/40_custom to boot ...
phunehehe's user avatar
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13 votes
8 answers
53k views

grub2-install Error: modinfo.sh Missing - Common solutions attempted

I know this is a pretty common problem, but I've tried a bunch of common answers (enumerated below) to no avail. Basic setup: I'm setting up a Fedora 31 / Ubuntu 18.04 dual-boot, each with a ...
fedora's user avatar
  • 361
13 votes
4 answers
73k views

USB booting to installing Linux on a new Lenovo laptop

I recently got a Thinkpad T440s with Windows 8.1 for my job, and since most of my work is done under Linux I am going to install Ubuntu on it, so that I can dual boot. The problem is that it won't ...
Btz's user avatar
  • 313
13 votes
2 answers
19k views

GRUB2: how to remember grub last choice

I'm currently trying out various distros so when I boot up my laptop I have several OS to choose from. Usually, all those distros install grub2 and locate themselves at the top of the list so they're ...
Gabriel's user avatar
  • 1,060
13 votes
1 answer
10k views

Installing FreeBSD alongside Linux

I am using Arch Linux with GNOME, I want to install FreeBSD alongside Arch Linux with the following requirements : I want to keep the Linux GRUB and add an entry of FreeBSD to it. I want to use ...
Severus Tux's user avatar
  • 1,035
13 votes
2 answers
18k views

"Enroll MOK" dialog after the 1-st reboot when you install Linux Mint 20.1 - what is it for (secure boot)?

I have a dual boot laptop Windows 10 / Linux mint 20. Secure boot enabled and also hard disk encryption, but the latter is maybe not important for the question. By the way, my question is very similar ...
Pavel Tankov's user avatar
12 votes
3 answers
40k views

How do I resize a windows partition without using gparted?

Suppose I have a native (i.e. coming from manufacturers) windows 7 installation on a laptop (with an SSD device, BIOS/MBR partition table if that matters). The partition on the device is completely ...
glS's user avatar
  • 806
12 votes
10 answers
75k views

PC boots straight into Windows 10 instead of launching grub

I recently purchased a laptop, an Acer Aspire R15 with these specs: 17 7500U, 12GB DDR4, 256GB SSD, GTX 940MX 2GB. It comes preinstalled with Windows 10, but I wanted to install Debian in a dual boot ...
Willothy's user avatar
  • 223
11 votes
2 answers
91k views

How Do You Pass VGA/VESA Modes with GRUB2?

One of my machines has a 3 TB HD setup to triple boot into Mint 14 (Ubuntu 12.10 variant), Slackware 14.1 and Arch Linux. The HD is formatted using the GPT/Guid system. The Grub2 technically "belongs" ...
haziz's user avatar
  • 2,241
11 votes
1 answer
19k views

Unable to shutdown Windows after installing GRUB

I've a Asus ROG laptop that came with Windows 8.1 preinstalled, I upgraded it to Windows 10 and then I wanted to install Bunsenlabs Linux as dual boot. The laptop was UEFI locked and it took me some ...
Steffen B's user avatar
  • 111
11 votes
6 answers
44k views

Installed Centos 7 after Windows and can't boot into CentOS

I wanted to setup a dual boot for Windows 7 and CentOS 7 I had a Windows 7 machine with 500GB disk. I shrank the Windows partition to provide space for CentOS 7 (roughly 230GB). I created a USB ...
Ashley Aitken's user avatar
11 votes
1 answer
22k views

What is the relation between UEFI and Grub?

I installed win10 and a Linux for dual boot on the same ssd, during the installation of Linux, it contains a grub. After installation, I can see there is a new Linux efi file added to the ESP ...
kdlsw's user avatar
  • 143
11 votes
1 answer
12k views

Set default boot entry to Windows instead of Fedora

I have the following options on my machine in Grub when I boot it up: Fedora (5.10.21-200.fc33.x86_64) 33 (Workstation Edition) Fedora (5.10.19-200.fc33.x86_64) 33 (Workstation Edition) Fefora (5.8.15-...
wheeler's user avatar
  • 304
10 votes
4 answers
33k views

Pop OS: systemd-boot can't detect Windows

I've followed the classic procedure to install Windows and Linux in dual boot. First I installed Windows in UEFI mode, then I use a bootable PopOS key to resize the main Windows partition; I created a ...
Narrateur du chaos's user avatar
10 votes
2 answers
26k views

Windows Boot Configuration Data (BCD) viewer for linux

Is there such a thing as a Windows Boot Configuration Data (BCD) viewer for Linux? I understand that BCD files are 'like registry hives' and tools exist to read registry hives for Linux. Is there a ...
nick_uk's user avatar
  • 103
10 votes
3 answers
8k views

GRUB confuses kernels/initramfs of Ubuntu and Arch Linux installation

I have a machine that used to dual-boot Ubuntu (16.04 currently) and Windows 7, with Ubuntu's GRUB as boot loader. Now I just added Arch Linux as third OS, following the official installation ...
Byte Commander's user avatar
10 votes
2 answers
23k views

Windows/Linux dual boot full disk encryption

I have an unencrypted Windows10/Manjaro dual boot on a 256Gb SSD, plus a 1Tb HDD, where I store most of my data. The partitions are organized as following: 1Tb HDD : |_ sda1 : exFAT partition, ...
mhham's user avatar
  • 563
9 votes
3 answers
80k views

Where is grub installed and do I need a new one for a separate linux installation?

Currently I have Arch and Windows with grub installed and configured. I'm going to make another Arch installation on a separate partition. Do I need to install and configure grub again on the newly ...
Al.G.'s user avatar
  • 269
9 votes
4 answers
3k views

Grub location - did it go to the mbr or elsewhere?

I have a dual boot setup with linux and Windows 7 with Grub as the bootloader. My partition table looks like this: 100 MB System Reserved Windows 7 500 GB Windows 7 100 MB /boot - ext2 500 GB linux, ...
mouche's user avatar
  • 1,315
9 votes
4 answers
20k views

reorder GRUB to list Windows on top

I have win 7 and linux mint 14 installed. Is it possible to modify the GRUB Menu to show Windows as the first option instead of Linux, which it currently does. Mainly so that during boot it starts ...
sunbabaphu's user avatar
9 votes
2 answers
5k views

ssh, accept two key fingerprints for the same server IP

ssh clients (by default, at least in Ubuntu 18.04 and FreeBSD 12) always check if server's key fingerprint is in the known_hosts file. I have a host in the LAN which has dual boot; both the OSs use ...
BowPark's user avatar
  • 4,895
9 votes
3 answers
33k views

Grub not loading config file or booting into linux automatically

I was trying to dual boot elementary os with windows on my laptop (Asus Zenbook UX305). To do that I shrank the windows partition using the windows disk manager, and then used the Elementary installer'...
user34703's user avatar
9 votes
4 answers
2k views

GRUB on USB Drive -- adding OSes

Some Background: Coming from a largely Windows background (though I'm familiar with Ubuntu, etc.) and using a Windows 7 machine to complete this task Have gotten GRUB installed successfully to the ...
SeanKilleen's user avatar
9 votes
1 answer
76k views

How to use os-prober to find MS-Windows boot data?

I saw Dual boot - Installed arch and windows entry disappeared on grub and I have the same/similar problem. I have Grub and it shows only Debian setup and not MS-Windows. I also tried the following ...
shirish's user avatar
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9 votes
1 answer
38k views

Two linux distributions, grub does not detect other one

I have two linux distributions installed on my PC, linux Mint and Debian, both having separate boot partitions and both are installed on luks encrypted volumes. Debian was installed first, then I ...
omicronns's user avatar
  • 243
8 votes
3 answers
30k views

(UEFI) Chainloading GRUB from GRUB

Terminology: ESP = my FAT32 EFI partition. I want to: Have a self-contained GRUB install on my ESP that chainloads another GRUB bootloader on my distro root filesystem (/). I currently have several ...
jiggunjer's user avatar
  • 460
8 votes
10 answers
56k views

Install rEFInd on OS X 10.10 Yosemite

I want to dual boot my macbook with Arch Linux and thus tried to install rEFInd using the install script, however, after install rEFInd doesn't seem to start at all? Anyone experienced the same issue ...
Rawa's user avatar
  • 241
8 votes
3 answers
3k views

FreeBSD and Linux shared partitions

Which directories, and how, can I share between FreeBSD and Linux? In particular, how can I deduplicate respectively /usr/home and /home? I guess directly sharing a partition between both systems ...
fchurca's user avatar
  • 161
8 votes
2 answers
23k views

After Debian installation, how to add Grub Entries for new/other bootable disks/installations?

I have two SSDs, one is for my Windows 7, and one is for testing and tweaking it (like installing Linux, or other operating systems...). I've already installed Windows 7 on the first SSD, and I tried ...
Eunsu Jang's user avatar
8 votes
2 answers
67k views

How to start a windows partition from the Grub command line?

I have Windows 7 installed on my system. After I installed Windows 7, I installed Fedora on a separate partition so that I could dual boot. I removed Fedora by deleting the partition it was installed ...
Juned's user avatar
  • 515
8 votes
6 answers
33k views

Linux boot loader is not detected after BIOS update

I use Lenovo y500 and after buying a 250 gb Samsung SSD, I decided to use dual OS consisting of Arch Linux and Windows 8.1. In order to prevent boot problems, I installed Arch later. I used UEFI and ...
mwb's user avatar
  • 181
8 votes
8 answers
110k views

Dual Boot Windows - Linux Mint grub menu not appearing at startup

I have Windows 10 operating system on HP Pavilion laptop not very old. I have installed Linux Mint on another partition and both the operating systems work fine (I am able to use both of them). My ...
krozaine's user avatar
  • 289
8 votes
2 answers
10k views

Add ArchLinux to Ubuntu dual-boot

I would like to dual boot ArchLinux with my Ubuntu. I would like some hints at how to do it without messing my partitions too much. Presently, my Computer partition scheme goes like this: (Ubuntu ...
kaligne's user avatar
  • 856
8 votes
2 answers
30k views

GRUB: Adding entry for OS on different hard drive

I've got two hard drives in my computer after I replaced one for windows. Since I love linux so much, I put a copy of Xubuntu on the one that I had initially replaced, and I now have two separate ...
theStandard's user avatar

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