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

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3
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1answer
7k views

Remove Grub Loader from Mac - USB Thumbdrive installation

I installed Linux from one bootable USB thumbdrive onto another bootable thumbdrive. That works. However, now my Macbook Air boots to "error: no such device: XXXXXXX... grub rescue>". If I hold ...
3
votes
1answer
263 views

Encrypted Ubuntu 13.04 on SSD does not work

I got a fresh Ubuntu 13.04 full os encryption installed to my SSD. On boot I'm not able to type anything at all in the decryption screen. The keyboard works perfectly fine in GRUB, but in decryption ...
3
votes
2answers
1k views

Why is this laptop taking almost 1 minute to boot Ubuntu 13.04?

My dad's new HP Pavilion dv6 laptop running Ubuntu 13.04 takes almost a minute to boot up - it seems like it's hanging somewhere. Is there something I can do to easily fix it? I need some help ...
3
votes
2answers
1k views

Can I install ubuntu to a partition on my portable hard drive?

Ok I've got a live USB which I can load the ubuntu 12.10 installer from so that's no problem. I am very cautious about losing files and I don't have much space on my computer anyway so I am going to ...
3
votes
2answers
2k views

Ubuntu not booting after installing in external hard disk

I have Lenovo z570 laptop with 750GB HDD, 6GB RAM, Intel i5 Processor and Windows 7 installed in it. I also have an external portable USB hard-disk of 1TB. My aim was to install Ubuntu 12.10 onto the ...
3
votes
2answers
5k views

What is the difference between single user mode, recovery mode from GRUB, and booting with Ubuntu install disk?

What is the difference between the following: Entering single user mode, e.g. telinit 1 Entering recovery mode, at the GRUB screen selecting Ubuntu ... (recovery mode) Using the Ubuntu installation ...
3
votes
4answers
6k views

Low graphics error [duplicate]

I recently upgraded to 12.10 (fresh install). I am a facing weird problem: When I boot, I get a message notifying me of low graphics. For now, I have been switching to console using Alt+F1 and then ...
3
votes
1answer
309 views

Boot failure on PowerPC Mac with encrypted LVM

I have a PowerBook G4 that was previously running Debian squeeze, and before that, OS X Leopard. It worked fine under Debian, but I disliked the GUI, so I decided to give Ubuntu a try. I downloaded a ...
3
votes
2answers
3k views

Machine check error while booting from USB

I put the last Ubuntu iso on my USB stick using UNetBootin, after formatting it to fat32. I've already done that before with other operating systems and it worked. I can't actually boot Ubuntu from ...
3
votes
1answer
2k views

Can't boot into Windows 7 after installing Ubuntu 12.04

When my computer loads the Grub menu shows up and gives the option to either boot to ubuntu or to Windows 7, however when I click on Windows 7 it writes some lines and then brings me back to the grub ...
3
votes
4answers
13k views

Does Ubuntu log events occurring during the boot?

Is there anywhere in the ubuntu (or linux in general) logs which can record a computer booting up and the OS failing to load, due to a problem encountered during the boot stage?
3
votes
2answers
9k views

Cannot boot after BIOS / UEFI reset to defaults

I have a ThinkPad X130e. I installed Ubuntu 12.04 LTS amd64 on it. All worked fine until yesterday. While diagnosing another issue I reset the BIOS / UEFI to defaults. Afterwards Ubuntu did not boot ...
3
votes
1answer
2k views

How to fix “Disk drive for /boot/efi is not ready or not present”? [closed]

After I updated BIOS/UEFI version to 1101 on an Asus P8Z68-V PRO motherboard Ubuntu (11.10) did not boot. After POST all I saw was a black screen with a blinking cursor in the top left corner. I ...
3
votes
1answer
1k views

Ureadahead - how to clear it's cache?

I am using Xubuntu 11.10 on old laptop with Pentium M and 1GB RAM. Please tell me, how to clear ureadahead cache, so I can build an "index" of files again, I would like to improve my system boot time, ...
3
votes
1answer
1k views

How to recover from uninstall of ubuntu-desktop?

In my infinite wisdom, during a system upgrade, I somehow managed to remove 'ubuntu-desktop' and several other key packages. As a consequence, my desktop is now gone - I only see a standard X terminal ...
3
votes
2answers
3k views

Why won't Ubuntu 11.04/11.10 boot after install? [closed]

So I have a desktop that I have been Using as a way over the top Media Center (specs at paste bin). I have successfully run 10.04 and 10.10 on this system with only a bit of shenanigans with pulse ...
3
votes
1answer
3k views

No longer able to boot stuck in busybox shell

I've installed win 7 and ubuntu 11.04. After a storm killed the power. I'm unable to boot. I'm stuck in the busybox shell (ash). Here's what happens when I boot: Bios loads Grub displays option ...
3
votes
5answers
10k views

USB boot problems

I try to install Ubuntu 11.04 on my laptop using thumb drive, but it fails with though I use the standard Startup Disk Creator utility. Laptop model: DELL Studio 1536 What is the problem ...
3
votes
2answers
404 views

Ubuntu Kiosk - delay loading browser/gnome until custom application fully loads

I've got a ubuntu kiosk that on boot loads up a local web app in firefox. I'm booting gnome and firefox too quickly. We need to wait about 30 seconds after it loads up and then need to hit refresh ...
3
votes
2answers
876 views

How do I boot from a grub menu?

I recently added another partition to my hardrive where ubuntu was installed to and afterwards when I booted ubuntu I got sent to the grub rescue> terminal. The fix for that was that I had to ...
2
votes
2answers
224 views

Ubuntu 15.10 freezes on startup. Kernel downgrade

I am running ubuntu 15.10 in a double partition with Windows 10. Most of the times I boot with Ubuntu, it freezes at the startup purple screen (the one with the Ubuntu logo and little dots below). I ...
2
votes
1answer
94 views

Ubuntu won't boot after GUI crash, now bad superblocks?

I'm experiencing some serious problems with Ubuntu 14.10 for a while. Everything was working fine for a few months on version 15.04, after which my system just started crashing out of nowhere, by what ...
2
votes
1answer
330 views

How to restore deleted files in /boot? (vmlinuz missing, system does not boot)

I mistakenly erased one the vmlinuz files in my /boot directory. However, I made a backup of /boot inside /tmp, just to be sure. Consequently, I cannot boot up, as I get the missing vmlinuz file ...
2
votes
1answer
342 views

Can't boot to my usb to install Ubuntu

Recently I deleted Ubuntu gnome desktop from my new laptop dual booting with windows 8 and also repaired the start up so that it would go to windows automatically. However now I want to install Ubuntu ...
2
votes
0answers
110 views

USB ports not working - how diagnose problem?

USB ports suddenly not working after computer wouldn't boot properly, for hours. Could only turn off by unplugging. I left it off overnight, but when I turned back on, it can't see USB thumb drives. ...
2
votes
2answers
389 views

Grub menu not showing at boot

I have installed windows 7 and Ubuntu in dual mode in different drives i changed windows 7 with widows 10 now its booting only with windows 10 not showing Ubuntu option at boot time please help
2
votes
2answers
201 views

/boot is using 98% of 227mb

I've been searching here and have a very similar problem to another post at (How do I free up more space in /boot?) The problem I'm getting is when I try the solution. For example: sudo apt-get ...
2
votes
0answers
74 views

Is FSCK on boot disabled in 14.04.2?

I have a few different installations of 14.04 server, all 32 bit, mostly kept updated, so I feel confident to say that they're at 14.04.2. One server is on a clients site, and doesn't get updated as ...
2
votes
2answers
902 views

error symbol 'grub_term_highlight_color' not found

My dual boot Ubuntu/Windows installation on a Samsung Series 7 laptop is suddenly broken, I do not know why. I have not made an update, and the laptop was not even connected to the internet when it ...
2
votes
1answer
283 views

Why does systemd boot so much slower than upstart

Recently upgraded from 14.04 to 15.04 and immediately noticed my boot times went from 10-20 seconds all the way up to 120 seconds. Can confirm that systemd is at least part of the problem, because if ...
2
votes
1answer
535 views

Upgrade to 15.04. Now asks for private key password at boot

I just upgraded Ubuntu from 14.10 to 15.04 and when I boot I now get a question before the login screen that asks me for my private key password. I didn't quite now what this password was so I've ...
2
votes
2answers
922 views

Unable to install Ubuntu 14 LTS (64bit) on Lenovo Ideapad S205

My Lenovo Idepad S205 seems to be in a worse situation than in the question here. Unfortunately the answer given there does not solve the problem. The laptop just boot cycles. It will boot my USB ...
2
votes
2answers
2k views

Failed to open \EFI\Microsoft\Boot\grubx64.efi - 80000000000000E

I have a fresh install of 14.04 on a new SSD. Everything was running fine until I ran boot-repair for some reason that I cannot remember. Now when I boot up I get the following errors: Failed to open ...
2
votes
1answer
479 views

Can Ubuntu 14.04 use encrypted swap without resorting to unofficial hacks?

On a fresh install of Ubuntu 14.04, I get this error message during boot the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present and the swap partition is never activated. From ...
2
votes
1answer
362 views

Asks password when trying to install Boot-Repair

I'm trying to install Boot-Repair directly from Lubuntu, but after typing the line "sudo add-apt-repository ppa:yannubuntu/boot-repair" in the terminal (as suggested here: ...
2
votes
1answer
3k views

/dev/disk/by-uuid/XXXXX does not exist dropping to a shell

I have just installed ubuntu 14.04 and when I reboot and remove the media I get the Gave up waiting for root device. Common problems: -Boot args (cat /proc/cmdline) -check rootdelay= (did the ...
2
votes
1answer
2k views

Unable to boot after installing systemd-services and changing the init parameter on boot

I tried two different methods but could not install systemd 1st method from here, 2nd method from here Confirmation that systemd is not installed: edward@computer:~$ file /lib/systemd/systemd ...
2
votes
2answers
334 views

Why do I get a black/purple screen when booting on a brand new PC build?

So I am quite new to Linux/Ubuntu, and while searching for parts and building my new PC myself, i decided i wanted to cut some costs by installing Linux instead of Windows. I have the PC all put ...
2
votes
1answer
374 views

What is taking up 320 seconds on my bootup?

Hi I've run a dmesg after booting with a kernel with loglevel=7. [ 19.439254] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88080e62f248 [ 19.439255] xhci_hcd ...
2
votes
1answer
324 views

Why won't rc.local run xinput?

I added this command to the rc.local file: xinput float 12 Then I saved the file. But when I reboot my PC, Ubuntu doesn't execute this command, cause the internal keyboard of my laptop is still ...
2
votes
2answers
7k views

How to fix “doesn't look like an EFI partition” with WinUSB?

Using WinUSB I get this error. I would appreciate any help as I'm trying to put Windows back on computer to please th' wifey, then dual boot so i can still use Ubuntu. Installation failed ! Exit ...
2
votes
1answer
781 views

Removing Ubuntu from boot manager

I have a similar problem like in this post. The answer there suggests using the 4 commands: sudo apt-get install efibootmgr sudo modprobe efivars sudo efibootmgr sudo efibootmgr -b X -B At first, ...
2
votes
2answers
993 views

Can't install Windows as dual boot after Ubuntu

I've a quite complicated problem related to dual boot of Ubuntu and Windows 7. At first I had Windows 7 installed in my laptop but then when I tried to dual boot with Ubuntu 14.04, I somehow ...
2
votes
1answer
172 views

Uninstall OS running in dual boot [duplicate]

Supposing I have two Linux distributions, in dual boot (the GRUB menu appears and ask me what to choose): Ubuntu 14.04 elementary OS Adding a new one is very simple: just insert the installation ...
2
votes
1answer
31k views

Using 'dd' command to create bootable USB stick

Why ISO images of some flavours of Ubuntu can be put on USB stick by dd command and boot successfully, while others flavours don't? Moreover it looks like it is dependant of particular USB stick too. ...
2
votes
2answers
2k views

message disk drive for /dev/mapper/cryptswap1 is not ready yet or not present even after trying various options

I have tried the advice here: Puny geek including the last amendments. and here Askubuntu including the advice further down for 14.04 I am running Xubuntu 14.04 on an older system. I just upgraded ...
2
votes
1answer
8k views

rc.local won't execute the script

This is my rc.local #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # ...
2
votes
2answers
8k views

Gave up waiting for root device 14.04

There are a lot of answers and tutorials how to fix this but I was not able to apply any of the solutions in my case. Here is my situation: I have perfectly working Ubuntu 12.04 I have installed ...
2
votes
0answers
3k views

Ubuntu 14.04 installation crashes with “???” message after selecting drive

The Gist: I have been trying to erase my disk and install Ubuntu 14.04 LTS on my laptop as my sole operating system. I can boot "Try Ubuntu" or "Install Ubuntu" from a USB stick. During the graphical ...
2
votes
3answers
5k views

Permanent GRUB edit from RO to RW

I recently installed the latest version of UBUNTU onto my laptop and having a slight issue during boot-up. During boot up I get the following error: Serious errors were found while checking the ...