For questions regarding the installation of two or more operating systems on a single computer.

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382
votes
11answers
1.2m views

Installing Ubuntu on a Pre-Installed Windows with UEFI

I'm absolutely new to Linux. I have been using Windows for all my life, but I have read about Ubuntu (and Linux in general) and I think I'll like it, so I wanted to know how to install Ubuntu on my PC ...
171
votes
9answers
260k views

How can I repair grub? (How to get Ubuntu back after installing Windows?)

I installed Windows 7, which ate Ubuntu's boot file. When starting up the computer, it now goes straight to Windows, without giving me the option of booting Ubuntu. How can I get Ubuntu back?
103
votes
3answers
287k views

How do I set the grub timeout and the grub default boot entry?

In Ubuntu 12.04 (or above), how do I set the GRUB time and the default OS (that I see at boot time) as I'm dual-booting Windows (7/8) and Ubuntu (12.04 or above)?
98
votes
14answers
271k views

How can I install Windows after I've installed Ubuntu?

I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break GRUB.
83
votes
5answers
57k views

Clock time is off on dual boot

Dual boot system Windows XP Pro and Ubuntu 12.04. I have the bios set for the correct time and Ubuntu set for US Eastern time. Ubuntu will boot up and the time will be off by -4 hours. If I correct ...
64
votes
8answers
75k views

How to automount NTFS partitions?

I have two NTFS partitions, and I don't want to mount them everytime I start Ubuntu. How can I do this? Is there a tool or a code to use? If so, is it safe to automount? specially when they are ...
50
votes
1answer
70k views

Dual boot Surface Pro with Ubuntu?

How could I setup a dual boot for Ubuntu and Windows 8 on my Microsoft Surface Pro with 128 GB. Note: My dual boot solution is below.
38
votes
1answer
27k views

How can I dual boot Windows and Ubuntu?

I currently have Windows 7 on my computer and I want to install Ubuntu alongside Windows safely. Could someone please provide clear instructions?
34
votes
3answers
39k views

How to get grub2 to remember last choice?

Grub2 - Community Ubuntu Documentation says the following: Saving an OS can be achieved by running sudo grub-set-default if DEFAULT=saved is set in /etc/default/grub. It may also be saved if ...
33
votes
3answers
7k views

Is Ubuntu destroying my internal HDD?

I have an Inspiron 3521 that came pre-installed with Windows 8.1. I decided to dual-boot Windows and Ubuntu, and it was working good. But, when using Ubuntu, I heard a lot of noise from my laptop ...
32
votes
4answers
153k views

Grub rescue - error: unknown filesystem

I have a multiboot system set up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the ...
31
votes
5answers
32k views

Automatically mount NTFS drive when I login

I use Ubuntu 11.10 and Windows7 dual boot with Ubuntu as my primary OS. Every time I need to access a document I need to mount the respective drive, though this is not at all tiresome, still, is ...
27
votes
4answers
79k views

My main username is not in the sudoers file

I was trying to install some software/edit files with my main username(not root) But I got this error [X] is not in the sudoers file. This incident will be reported. I tried to edit the /etc/sudoers ...
27
votes
7answers
56k views

Windows 8 removes Grub as default boot manager

I have a Sony VAIO S series with Windows 8 preinstalled, and I installed Ubuntu 12.10 on a new partition. When the PC boots Grub is display, and I can choose between Windows 8 (didn't worked at the ...
26
votes
6answers
31k views

A common /home partition for multiple Linux distributions

I have an Ubuntu installed in one partition, Debian on the other and now I am planning to install backtrack and SUSE also. Debian mounts a separate partition as its home mount point, whereas Ubuntu ...
26
votes
5answers
59k views

Windows 10 upgrade lead into grub rescue

I was dual-booting Windows 7 and Linux Ubuntu on my desktop, and today is the day they gave out free Windows 10 upgrades. How exciting! I got the update, and it was installing, and I left to go take ...
25
votes
12answers
50k views

Windows 10 upgrade kills grub and boot-repair doesn't help

I've just upgraded to Windows 10 from Windows 8.1 on my partitioned laptop that has Ubuntu 14.04 installed. Grub no longer appeared on boot so I ran boot-repair from an Ubuntu liveUSB. This didn't ...
21
votes
7answers
33k views

Should I choose exFat or NTFS for a “shared” partition in a dual-boot system?

I have a new laptop which I am setting up as dual boot Windows/Linux. I would like to access files from both Ubuntu and Windows 7. Should I create a separate NTFS partition?
21
votes
6answers
160k views

How to install Windows 7 after Ubuntu and dual boot? [duplicate]

I just installed Ubuntu, a full install removing the prior OS. I was forced to remove Windows 7 from my HP dv6 because of the max four partitions already being there. I didn't lose anything, all ...
20
votes
9answers
4k views

Install Ubuntu without making Windows license void

I have a dell laptop with a pre-installed version of Windows 7 home premium. I want to dual boot my system to run both Ubuntu and Windows 7. The engineer told me I cannot do this without removing ...
20
votes
12answers
79k views

How do I hide the GRUB menu showing up in the beginning of boot?

I stopped Dualbooting and I dont want to have to choose the OS anymore and just have it load Ubuntu like normal like before? Any help is appreciated.
20
votes
7answers
82k views

Grub does not show a Windows 8 option after dual boot

So, I've successfully dual-booted my Windows 8 machine with Ubuntu 12.04 . However, I still don't have a convenient method of choosing what OS to load at boot time. After installing Ubuntu, my ...
20
votes
9answers
50k views

Hide GRUB2 menu UNLESS you hold down Shift key: how to make this happen?

I have a Ubuntu - Windows 7 dual-boot set-up, and I would like to have it that my laptop would boot up Windows 7 unless I press down the Shift key right after boot and bring up the Grub2 menu from ...
20
votes
4answers
113k views

How to set Windows bootloader as default bootloader?

I have a Win 7/11.10 dual boot system with Grub 2 as the default bootloader. However, I want to make Windows bootloader the default bootloader (grub 'dos' like interface scrares the hell out of my ...
19
votes
7answers
18k views

How to reboot into Windows from Ubuntu?

I'm looking for a way to reboot into Windows from Ubuntu on a 10.10/Vista dual boot system. The specific use case is that I would like to be able to ssh into my running Ubuntu instance and issue a ...
18
votes
7answers
31k views

How do I scan my windows partition for viruses from Ubuntu?

I think I might have a virus on my windows partition and I want to scan it from Ubuntu. Is this possible? I would like a program that is free. clamAV I tried clamAV but I couldn't find a setting ...
18
votes
3answers
3k views

How do I burn multiple Ubuntu isos on one DVD?

I always find it a waste putting a 790MB Ubuntu iso on a 4GB DVD, and I was wondering how to put multiple operating systems on one DVD with a grub menu. I know it is possible, but I just don't know ...
17
votes
6answers
10k views

To use Windows and Ubuntu on one computer, which should I install first?

I understand it's possible to install Ubuntu first, and later Windows or to install Windows first, and then Ubuntu, but assuming I have the freedom to do either, which is the better, easier, and more ...
16
votes
3answers
14k views

Is a /boot partition necessary anymore?

A fair while ago (~ 2004) I was told to always create a separate partition for the boot directory. And since then I always have. But after reading a few questions about partitioning questions, I'm ...
16
votes
1answer
65k views

Where to install bootloader when installing Ubuntu as secondary OS?

I'm trying to install Ubuntu as secondary OS on my laptop. I have Windows 8 already installed on my laptop. Now, I know how to run Ubuntu from USB drive, I created addition partition and formatted it ...
16
votes
2answers
26k views

If Windows 10 “upgrade” affects GRUB2 and screws up my dual boot with Ubuntu will I have to completely wipe my computer and start from scratch? [closed]

I turned off Windows update because I read about problems with BIOS tinkering within the updates. Partitioning is not something I do on a daily basis so fear has been creeping up on me with updates to ...
2
votes
2answers
3k views

Ubuntu won't start, emergency mode

Hello guys I installed Windows 10 on my laptop (toshiba satelite c660) and after that I ran live version of Ubuntu and restored GRUB (with official boot repair tool) so I can start Ubuntu again, after ...
2
votes
1answer
26 views

Have installed Ubuntu 14.04.3 LTS and have 2 problems

I installed Ubuntu recently alongside WinXP & Robolinux and whenever I start my computer I don't have the option to boot to the other systems. When the computer starts it goes straight to Ubuntu ...
2
votes
3answers
6k views

MacBook install: no mountable file systems

I own a MacBook Pro running Mountain Lion. I would like to dual-boot my Mac OS with Ubuntu. When I download the file and try to open it, it reads "No mountable file systems". I have downloaded both ...
1
vote
2answers
493 views

GRUB menu not showing with dual-boot UEFI mode installation

Previously I had Dell Inspiron Laptop with Legacy Boot and MBR disk partitioning with pre-installed Ubuntu 12.04. I needed dual boot with Windows. So I formatted it completely using Live USB, ...
1
vote
1answer
1k views

Dual boot on seperate hard drives - Windows 7 MBR and Ubuntu GPT

My question is simple. I currently have Windows 7 (64-bit) installed on a SSD MBR partition. I also have a 3TB HDD that I am splitting between extra Win-7 storage and what will hopefully be an Ubuntu ...
1
vote
2answers
2k views

Grub not working after Windows 8.1 update on Ubuntu 12.04 LTS [duplicate]

I do understand that this is a common problem, and I have read few of the threads. Here is synopsis of my problem. Logged on to window 8.1, windows installed updates and now grub2 doesn't work ...
1
vote
1answer
18 views

Grub 2 Problem - Removal not working!

Hello everyone, here is my problem When I boot up my computer, I go straight into Grub 2. I know that if I type exit it will quit Grub 2. But for some reason it goes back into Grub 2, and I type the ...
1
vote
1answer
107 views

Dual boot with windows 8.1 “write the changes to disks?” problem [duplicate]

I have a pop-up message while installing Ubuntu alongside Windows: Is it normal? If i continue is it format my entire hard disk? What should i do?
0
votes
2answers
1k views

How Do I Reset my Ubuntu Password on a Laptop That Came with Windows 8 Pre-installed? [duplicate]

My laptop came with Windows 8 pre-installed and uses UEFI (the successor to BIOS) by default. It has been working fine for me for a few months. I decided to install Ubuntu with the goal of a ...
0
votes
1answer
56 views

Boot-Repair Error [closed]

Hi I have a boot report here. I need to know what settings to turn on. Default repair does not work, there is a /boot partition under sda7, but turning on that setting alone, makes it so the grub ...
0
votes
1answer
1k views

Install Ubuntu Linux in an existing empty ext4 partition

I am using Install Ubuntu 12.04.3 LTS running from an ISO DVD. Before running Install, Disk Utility was used to set desired partitions with logical partitions of 108 GB ext4 for Ubuntu and 20 GB for ...
0
votes
0answers
10 views

Unable to install new OS after installing Lubuntu 14.04

I have install Lubuntu 14.04 in my machine, but now I want to dual boot my system. I am not able to install/boot any other OS including Windows-XP, Linux-Mint, Ubuntu 9.10, Lubuntu 14.03 etc. using ...
0
votes
0answers
12 views

Turn a normal partition installation of Ubuntu into an LVM one in a multiboot setup with Windows 8.1?

Is it possible to turn my Ubuntu installation into an LVM one? I wanted to install it with LVM in the first place, but at the time I installed Ubuntu I did not know it was possible to have a multiboot ...
0
votes
0answers
21 views

Missing Text on Live USB [on hold]

I installed Ubuntu 15.04 onto a USB I had, after having trouble getting it to boot up (Through BIOS) after I kept getting the "Missing Operating System" error, it loaded up fine. Then when the desktop ...
0
votes
0answers
15 views

Ran install from ISO to disk(Trial)Ubuntu 14.04, the disk installed beside windows10 but now have 2 screens to load…

Turn on power, screen asks which to load(From windows) So, I select windows, and poof, good ! Then if I choose Ubuntu, a screen says stuff, and ESCape is my option. Then I choose to boot (f9) ...
0
votes
1answer
31 views

UBUNTU 14.04 works slow and stalls often

The Following are Basics of My System MEMORY: 991.0 MiB OROCESSOR: Pentium(R) Dual-Core CPU E5200 @ 2.50GHz × 2 GRAPHICS: Intel® G33 x86/MMX/SSE2 OS Type: 32-bit DISK: 116.5 GB I have set up ...
0
votes
2answers
174 views

Trouble sharing storage partition win10/ ubuntu15.05

I'm having a strange issue with a duel boot I set up on my laptop. I have one hard drive (a rather small 120gb ssd) split into thirds. on the first third I have windows 10 installed. On the second I ...
0
votes
1answer
59 views

Cannot boot into Ubuntu [Dual-boot]

Hi I have installed Ubuntu onto my 2nd hard drive. During the Ubuntu installation I chose "something else" and selected the unallocated partition I created specifically for Ubuntu. I did not choose ...
0
votes
1answer
210 views

hd1 cannot get C/H/S values

Ok, I know there are many questions about this topic, but I can't found a convince answer (fixing the problem or not). Recently I bought an SSD drive and installed in main SATA (hd0), I've replaced ...