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
votes
1answer
303 views

How to get beeping on boot to stop?

I recently tried installing Ubuntu 15.10, and for all the trouble of "root directory" during installation, I decided not to install. But every time I boot (from usb), the boot menu shown in the image ...
3
votes
2answers
7k views

Is it usual Ubuntu 14.04.2 to take a long time at “random: nonblocking pool is initialized” step during boot process?

During the boot process, my Ubuntu 14.04.2 takes about 11 seconds to complete the "random: nonblocking pool is initialized" step (this is the slowest step, FYI). What does this step mean? Is it ...
3
votes
2answers
2k views

“Error: Invalid signature” when configuring dual boot Ubuntu 14.04 and Windows 10

After installing the Windows 10 upgrade on my laptop, it ruined the grub boot manager, and I could only boot in windows 10. I fixed the boot manager using a live cd with the boot-repair tool, but it ...
3
votes
1answer
1k views

Why Can't GrUB Find a Kernel That It Already Found?

After upgrading to 15.04, I need to have kernel headers matching the running kernel (for another package). The upgrade installed kernel 3.19.0-17. Just in case, I also installed ...
3
votes
2answers
1k 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 ...
3
votes
4answers
1k views

Xubuntu / Cannot boot unless navigating to EFI file in BIOS

I have a boot problem on my laptop (HP ProBook 450 G2) since I tried to replace the pre-installed Windows 7 by Xubuntu 14.04. The BIOS uses the UEFI boot mode (but trying the "Legacy" boot mode does ...
3
votes
5answers
13k views

How to boot Ubuntu 14.04 with grub4dos (RMPrepUSB)

After downloading Ubuntu 14.04, I would run it from a bootable USB stick. I already have the bootable USB stick with grub4dos, and I was looking for a 'guide post' with the command to boot Ubuntu ...
3
votes
0answers
2k views

Gave up waiting for root device

I just installed Ubuntu 12.04.4 but cannot fully boot. Here is my error message: Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the ...
3
votes
1answer
112 views

Data Recovery Problem

I'm new at Linux, so I promise no matter how simple the answer is, it will all be news to me. I've found a lot of questions online similar to mine, but I'm not having much luck with results. This ...
3
votes
2answers
1k views

Boot problems after uninstalling Ubuntu

I have a Sony Vaio PC and after uninstalling Ubuntu from my laptop I went into a problem that I can't fix. I get a error message that says: SECURE BOOT FAILED! Your VAIO has detected an invalid ...
3
votes
3answers
10k views

upstart job works only with manual start/stop

I have a very small upstart job in /etc/init/tsm.conf to start backup client after network starts. It works just ok if I start/stop it manually via service tsm start|stop|status. But service tsm ...
3
votes
1answer
5k views

Need to deactivate NVIDIA driver from recovery mode or using Ubuntu 12.04 install disk

I tried switching graphics drivers from 317 to 304(post-release) because it kept crashing when I wanted to move my monitor's display to the other side of the laptop display (using NVIDIA Settings) ...
3
votes
1answer
8k 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
269 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
6k 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
311 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
15k 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
11k 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
413 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
889 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
1answer
85 views

Can't boot with linux 4.4.0-22

I've just installed a fresh ubuntu 16.04 and run apt-get upgrade, which apparently resulted in linux 4.4.0-22 being installed. On reboot, after I select ubuntu from the menu (I have Windows installed ...
2
votes
2answers
617 views

Ubuntu 15.10 freezes on startup. Kernel downgrade [duplicate]

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
157 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
578 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
161 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
2k 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
259 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
1answer
500 views

BQ Aquaris E5 Ubuntu bricked by Ubuntu5 upgrade

Today my BQ Aquaris E5 Ubuntu informed me I had an upgrade available to Ubuntu 5. I downloaded the 160+ MB of data, and the phablet rebooted to install it. Then it went black, and I could not boot ...
2
votes
0answers
93 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
3answers
1k 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
372 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
0answers
1k views

Kubuntu 15.04 Freezes On Startup

I have a fresh installation of Kubuntu 15.04. Every few boots, it freezes completely during startup with the kubuntu logo showing before the login screen shows, ctrl+alt+F# / ctrl+alt+del do nothing. ...
2
votes
1answer
634 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
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
622 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
657 views

Persistent Live usb vs Full install [duplicate]

I have looked at some of the other forum post and they don't answer my question. I have been using various Linux Live CDs for some time now, but I've just bought a 16Gb usb 3 stick for a Linux ...
2
votes
1answer
514 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
5k 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 ...