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Questions tagged [boot]

Use this tag if you have trouble booting Ubuntu or you have questions about the bootup process.

443
votes
32answers
1.2m views

My computer boots to a black screen, what options do I have to fix it?

I am trying to boot Ubuntu on my computer. When I boot Ubuntu, it boots to a black screen. How can I fix this? Table of Contents: If you are trying to install Ubuntu If you have a dual boot ...
23
votes
17answers
63k views

Unable to boot into Windows after installing Ubuntu, how to fix?

I installed Windows on my computer, followed by an installation of Ubuntu. However, now I'm unable to boot into my Windows install. What can I do to fix this?
536
votes
21answers
544k views

How do I free up more space in /boot?

My /boot partition is nearly full and I get a warning every time I reboot my system. I already deleted old kernel packages (linux-headers...), actually I did that to install a newer kernel version ...
319
votes
5answers
1.3m views

How do I change the GRUB boot order?

I have both Windows 7 and Ubuntu installed on a shared machine. Because a lot of the non-developers use Windows, I'd like to change the boot order to make it easier for them. Currently the boot order ...
36
votes
1answer
143k views

How do I remove “Ubuntu” in the bios boot menu? (UEFI)

See this ubuntu appears in BIOS menu (UEFI) I have this on my Lenovo s205 too. Is there some way to remove "ubuntu" from the menu? I don't even have it installed anymore.
94
votes
3answers
375k views

How to create UEFI-only bootable USB live media?

Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers. In other words the key advantage to creating UEFI-only bootable USB ...
206
votes
15answers
327k views

How do I disable X at boot time so that the system boots in text mode?

Is it possible to disable X at boot time? I'm setting up a server so it would be nice if it wouldn't load the graphical interface every time I boot.
71
votes
1answer
151k views

How do I boot into a root shell?

When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode". How do I do that?
37
votes
5answers
44k views

Can't boot without Flash Drive plugged in

I had Ubuntu 12.04 Beta installed on my computer. When 12.04 was finally released, I made a bootable USB Flash Drive using Startup Disk Creator. Then I decided to check if this drive works properly ...
28
votes
1answer
231k 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 ...
179
votes
6answers
555k 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)?
71
votes
5answers
232k views

Windows 10 upgrade led to 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 ...
214
votes
6answers
592k views

How to get to the GRUB menu at boot-time?

This issue came up recently for me (and I've been prompted to lodge it as a specific question about it): My system is not dual-boot, I run a standard Ubuntu desktop system "on the metal" (I think ...
100
votes
5answers
508k views

How can I dual-boot Windows 10 and Ubuntu on a UEFI HP notebook?

I've got an HP Pavilion Touchsmart notebook that came with Windows 8. I've upgraded to 8.1, and now I want to dual-boot an Ubuntu distribution with Windows 10. When dual-booting with Windows 8.1, the ...
165
votes
5answers
561k views

Boot drops to a (initramfs) prompts/busybox

I am running an HP pavilion dv6000 dual boot win7 and Ubuntu 12.04. (well, up until today). After a reboot, the boot process drops to the BusyBox shell and I end up at the prompt: BusyBox v1.18.5 (...
54
votes
4answers
314k 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 ...
60
votes
7answers
181k views

How do I get my Mac to boot from an Ubuntu USB key?

If you select "USB" and "Mac" on this download page, it gives a series of command line instructions to make a USB key which the MacBook will boot into Ubuntu from. I've followed them to the letter ...
165
votes
3answers
349k views

fsck error on boot: /dev/sda6: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY

I dual boot Ubuntu and Windows 7. I was browsing on FireFox in Ubuntu and all of a sudden I get some error message, so I rebooted. Now when I try to boot into Ubuntu I get this message: fsck from ...
74
votes
8answers
187k views

Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Upon trying to upgrade from 10.10 to 11.04 all seemed to go well until the restart. This error message is what comes up: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ...
17
votes
14answers
123k views

Not booting from USB or CD (SYSLINUX Message)

I am trying to install linux on my laptop, a Toshiba Satellite C6550-S5200. I did it once but something happened so I removed it then I had to destroy all data on hard drive so now I have nothing on ...
35
votes
3answers
280k views

error: file '/grub/i386-pc/normal.mod' not found

error: file '/grub/i386-pc/normal.mod' not found. grub rescue> What can I do? I just sit and stare at it. I found my old netbook (Dell Inspiron 1010) which I have not used for about four years. ...
66
votes
4answers
703k views

GRUB rescue problem after deleting Ubuntu partition! [duplicate]

After I deleted my Ubuntu partition, I rebooted my computer and I only get a prompt: grub rescue > The command ls lists (hd0) (hd0,msdos5) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) (hd1) (hd1,...
50
votes
6answers
171k views

How to run a script during boot as root

I had a script that automatically enables my wifi without using networkmanager, but I don't know how to run the script as root while the system is booting. How do I make the script run automatically ...
14
votes
3answers
25k views

I can't boot into a usable system after updates. What should I do?

Since some system updates, my machine can no longer boot properly. I am no Ubuntu guru. I do not have a week to spare diagnosing the issue. I just want to retrieve important data from this machine's ...
71
votes
4answers
330k views

How do I boot into single-user mode from GRUB?

After changing a few lines in xorg.conf, I can no longer boot Ubuntu (I assume it breaks when trying to load up X), so I need a way to boot into a single-user mode. However, there seems to be zero ...
61
votes
12answers
90k views

How do I improve boot speed?

I have seen many videos that make Ubuntu faster, but these methods only make desktop performance faster. I am looking to make my computer boot faster. Is their anything I can do to make Ubuntu boot ...
26
votes
2answers
159k views

32-Bit UEFI Boot Support

I recently purchased a Dell Venue 8 Pro. I have read online about what it needs in order to boot into Ubuntu or any other Linux distro. From what I have gathered, what really needs to happen is 32-...
82
votes
14answers
190k views

How to create a bootable USB with multiple ISO images in it

What I want is to create a bootable pen drive that shows GRUB menu and I can select any of the several bootable systems from there to install/run. I have several ISO images that I want to install in ...
24
votes
3answers
177k views

Install on Second Hard Drive with startup boot option?

In theory, what I want to do is very simple, but I've done some google research and read some posts on this site and I'm still confused. I want to keep win7 on my primary C:\ drive, and install ...
49
votes
10answers
513k views

Uninstall Grub and use Windows bootloader

I have Windows 8 pre-installed and then installed Grub with Ubuntu. Ubuntu is not my thing so now I want to remove it along with grub. From what I have learned, with UEFI, Grub does not overwrite the ...
55
votes
3answers
64k views

Why disable Fast Boot on Windows 8 when having dual booting?

Why is everybody keep mentioning to disable Fast Boot on Windows 8 if you have installed alongside Ubuntu? Is it something that is recommended only for UEFI machines or is it a suggestion for Legacy ...
61
votes
4answers
75k views

How do I avoid the “S to Skip” message on boot?

After upgrading my laptop from karmic to lucid, my fat32 partition won't mount automatically. I get the message: The disk drive for /osshare is not ready yet or not present Continue to wait; or Press ...
33
votes
5answers
13k views

Kernel panic after update to 4.4.0-108-generic

Today I got what I presume was the update that should take care of Spectre and Meltdown. That didn't go very well. What do I do now? See screen photo. I can't boot the 4.4.0-108-generic kernel ...
3
votes
1answer
3k views

Can not boot anymore after a boot repair

I upgraded from 12.04 to 14.04 on my Toshiba satellite z930. Ubuntu is the only OS on this computer (windows 8 was wiped right away). Everything went great, except that the following message appeared:...
79
votes
13answers
256k 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 ...
55
votes
4answers
71k views

Enabling Nvidia driver messes up splash screen

When you boot from live CD, or doing the first boot after installing Ubuntu, splash screen looks awesome. But as soon as you enable nvidia-current driver, installed with apt-get, splash screen goes ...
37
votes
4answers
159k views

Is it possible to boot Ubuntu using the Windows bootloader?

As noted by many people, Windows 8's UEFI requirements might will won't get in the way of installing Linux (or whatever), as the replacement bootloader will also need to be signed somehow. Some ...
12
votes
3answers
20k views

How do I make a persistent live USB of Ubuntu 16.04?

I need the persistent live Ubuntu of preferably 16.04 because I need to rescue my whole encrypted HDD of 16.04 as discussed in the thread How do I add myself back in sudo group in Encrypted HDD of 16....
3
votes
1answer
3k views

Dual Boot with SSD and HDD Storage [closed]

I currently have a 1TB HDD setup to dual boot Win7 and Ubuntu 12.04. I am purchasing a 256GB SSD and another 1TB HDD. My intentions are as follows: Setup the SSD as my dual boot device with Adobe CS6 ...
63
votes
13answers
238k views

“Welcome to emergency mode!” Think it is a fsck problem

journalctl -xb snippet (what i think is wrong, it was at least in red): -- Unit systemd-fsckd.service has begun starting up. juli 09 15:40:16 kim-SSD-Sationary systemd-fsck[414]: /dev/sdb1 contains a ...
4
votes
1answer
28k views

Bootable device not found after clean install of Ubuntu 14.04 UEFI on Acer

I have a single boot Acer laptop where I performed a clean installation of Ubuntu. After boot it shows a bootable device not found error. I tried running boot-repair and when it finishes it says ...
17
votes
4answers
7k views

Long boot delay on Ubuntu loading/splash screen following regular dist-upgrade on clean SSD install (18.04)

I'be been running 18.04 since a clean SSD install on the day of it's official release, without issues. Power on to login was seconds (max 10) Then, I did a regular upgrade this morning: $ sudo apt ...
19
votes
5answers
35k views

My Ubuntu is running fsck on every bootup

On every bootup it's the same: /dev/sda1: clean, 908443/38690816 files, 44176803/154733312 blocks Is it some kind of option Ubuntu uses to ensure filesystem consistency or is there something wrong ...
79
votes
6answers
142k views

How can I show or hide boot messages when Ubuntu starts?

Is there a way to easily turn on/off showing the boot messages (loading the services) when Ubuntu starts? Is it something in Grub2? I am running 10.04.
4
votes
1answer
3k views

Installed Ubuntu 17.04 and now can't boot at all: Failed to open \EFI\Boot\grubx64.efi - Not found

I installed Ubuntu 17.04 from a USB on my Acer Spin 5 which came with Windows 10. I made the choice of removing Win10 because earlier when I Dual-booted Ubuntu and Windows 10 I was not able to boot ...
141
votes
4answers
125k views

Ubuntu 14.04 LTS live USB boot error (gfxboot.c32:not a valid COM32R image)

I downloaded Ubuntu 14.04 (64 bit) lts. I made a bootable usb stick. But I keep receiving this error message upon booting: SYSLINUX 4.04 EDD 20110518 Copyright (C) 1994-2011 H. Peter Anvin et al ...
21
votes
2answers
24k views

How to install Ubuntu 14.04/16.04 64-bit with a dual-boot RAID 1 partition on an UEFI/GPT system?

Update: Question and answer below also applies to Ubuntu 16.04 I have a computer with dual SSDs and Win (7) pre-installed on another disk. The pre-installation uses (U)EFI/GPT boot. I want to install ...
1
vote
1answer
3k views

'Upgraded' to Windows 10 on dual boot, and can't boot to Ubuntu partition

I recently updated my windows 7 to 10, and destroyed grub in the process. I ran Boot-Repair on a live CD and managed to get the Windows Partition back. However grub still doesn't come up for me. The ...
49
votes
5answers
138k views

How do I run update-grub from a LiveCD?

Okay, so I did something stupid. I was trying to clean up my Grub entries, and accidentally removed all of my Linux kernels from Grub (they're still on the hard drive). So now, obviously, Grub doesn'...
38
votes
2answers
64k views

What to do about “the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present”?

While booting Ubuntu 12.04, the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present is showing. Why is this?