Questions tagged [boot]

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

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Dual booting Win10/Ubuntu 15.04 starts in grub bash

I have a brand-new PC with pre-installed Win10. I installed Ubuntu 15.04 on a separate hard drive, without any problems. However, after the first (successful) boot, when I rebooted the machine, the ...
Tapani Simojoki's user avatar
1 vote
0 answers
111 views

fsck at boot does it worth it?

With ext4 filesystems, I'm thinking about if it does worth it to put the fsck flags into my /etc/fstab file to fsck it every n boot. But the waiting time I spend does worth it? or the filesystem ...
Philippe Gachoud's user avatar
-7 votes
2 answers
1k views

Create a bootable Gentoo USB from within Ubuntu?

I am unable to create a Bootable USB for Gentoo, using Netbootin on Ubuntu. How can I create a bootable USB using the gentoo.iso file?
Muhammad Siddique's user avatar
2 votes
1 answer
719 views

Stuck at "Starting adaptive readahead daemon preload [OK]"

After upgrading to 14.04 from 12.04 my laptop (Asus X552c) got sluggish, especially when on Google chrome. So I was looking for a solution and found this thread. I followed the instructions of ...
quanta's user avatar
  • 249
1 vote
0 answers
104 views

How to prevent Ubuntu 15.04 LiveCD from shutting down on critical temperature?

A netbook I am trying to install Ubuntu to heats to 98°C and shuts down at the beginning of the installation process. There is also a BIOS auto-shutdown feature (non-customizable, shutting down at a ...
Ivan's user avatar
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1 vote
0 answers
200 views

Unable to start KDE on Kubuntu

Today I started my computer and I sudently had to follow a wizard to set the timezone, the user account and the keyboard layout. It restarted automatically and after that, nothing :/ I have the ...
didil's user avatar
  • 181
1 vote
0 answers
205 views

"How to burn a DVD on OS X" but DVD does not boot

I followed all the steps about hot to burn a DVD on OS X as in http://www.ubuntu.com/download/desktop/burn-a-dvd-on-mac-osx but.. (after using the file ubuntu-14.04.3-desktop-amd64.iso ) even that I ...
jeanjacquesvivde's user avatar
2 votes
1 answer
2k views

Can't extract ISO to USB drive [duplicate]

I'm trying to extract an ISO of a Linux distribution to a USB flash drive but I keep getting an error message that the destination file system does not support symlinks. The flash drive is formatted ...
techguy378's user avatar
0 votes
1 answer
116 views

Password required while building a USB disk

I was following the instructions given in STEP 8 http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx Nevertheless, in STEP 8, I got the message (after I introduced the my laptop-user ...
jeanjacquesvivde's user avatar
-1 votes
1 answer
68 views

Cannot boot ubuntu without usb plugged in and cannot use the usual way to install grub [duplicate]

I installed ubuntu automatically using a jump flash, however it cannot boot without usb. I tried the way of typing "sudo grub-install/dev/sda", and it just doesn't work! Also I am still confused where ...
Wei Huang's user avatar
1 vote
1 answer
2k views

casper toram specify live-media device

Is there a way to specify the device on which the live-media will be found? I have the kernel and initrd in my EFI System Partition. The live-media filesystem is in an NTFS partition on the same (...
Jay Michael's user avatar
0 votes
1 answer
128 views

Strange problem: black screen when selecting live ubuntu or install ubuntu [duplicate]

I've putted ubuntu to a flash drive and came to grub menu selected try ubuntu live the screen goes black with some words"acpi pcc probe failed" then the screen goes totally black, I've tested the ...
Ahmed Ramadan's user avatar
1 vote
2 answers
2k views

Boot from USB to recover existing files?

I'm a relatively new linux\ubuntu user and have run into a serious problem. My Ubuntu 15.4 installation won't boot. I'm not sure why, but when I try to access the grub loader by holding down the ...
Doug's user avatar
  • 11
1 vote
1 answer
4k views

Failed to open \EFI\Microsoft\Boot\grubx64.efi

I've a laptop that came preinstalled with windows. I wiped it and installed elementary linux distribution. Then months later I've installed ubuntu flavoured in another partition, so dual linux boot. ...
Jleo's user avatar
  • 11
1 vote
0 answers
2k views

Replace failed disk in RAID 1

two days ago one of my two drives in my software RAID 1 (that was setup using gnome-disks) configuration failed. I could not access the files in the meantime. After short research it seems that I have ...
Flatron's user avatar
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0 votes
1 answer
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reinstalling without alot of options

I have no top/side bars and terminal wont start from its folder... (Im lucky to have previous installed wine and firefox and have them on my desktop because the only way I can do anything is from ...
israeldavidson's user avatar
9 votes
3 answers
22k 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 ...
Tom's user avatar
  • 93
-1 votes
1 answer
39 views

How to remove the boot? [duplicate]

I accidentally put it when give the command sudo update-grub and I just ignore the text and pressed 'y' and now I've a boot menu, but i dont wanna this. I've only an OS. I'm trying to learn about ...
JLuann's user avatar
  • 19
1 vote
0 answers
334 views

Install Lubuntu on external HDD and UEFI Partitions!

I want to install Lubuntu from my bootable USB drive stick (where I use it in test mode) to an external HDD of 1 TB that I bought, while ignoring the laptop and its drives as they are full and without ...
Nera Sky's user avatar
0 votes
1 answer
447 views

installing Ubuntu 64 bit 15.04 on Origin EON 17SLX(machine has windos 8.1 preinstalled)

I am trying to install ubuntu 64 bit 15.04 on a Origin EON 17SLX I have disabled fast boot and the secure boot option is disabled in the firmware. To boot to windows, the EFI boot must be enabled, ...
Dave's user avatar
  • 111
2 votes
2 answers
327 views

How can I redetect swap partition after formating to enable hibernation

I had this setup working on my laptop: /dev/sda1 (ext4) / /dev/sda2 (ext4) /home /dev/sda3 swap partition /dev/sda4 (ntfs) /media/windows After getting sick of windows, I removed the last partition. ...
animaletdesequia's user avatar
0 votes
1 answer
651 views

How can cilents get ip addresses during booting time via dhcp server

I have installed a dhcp server and it is working fine. When I open the terminal on the clients side, they have got the address. The problem is that when I booted the client machines they didn't get ...
singh's user avatar
  • 27
6 votes
3 answers
63k views

How can I install and run Ubuntu directly from an SD card?

I've heard that this is possible and I want to do this. I downloaded Ubuntu 14.04.3 LTS.iso(64-bit) file and used win32 Disk Imager to write it onto two SD cards to try and get it to work. The SD ...
Alyx Zech's user avatar
1 vote
1 answer
591 views

EFI Dual Boot Ubuntu 14.04 and Wind10 - Grub strange behavior

I have a EFI dual boot installation on a Lenovo y50-70. I upgraded to win10 without any problems the very first day of win10 availability. This is the structure of my Hd: sda1 - windows recovery ...
Dario Valocchi's user avatar
14 votes
3 answers
50k views

grub-install: this GPT partition label contains no BIOS Boot Partition

I have an installation of Ubuntu 15.04 that has been working fine for some weeks. Today, my box locked up to the point I had to power it off in order to clear the error. When I did so, it stopped ...
Thom's user avatar
  • 1,469
2 votes
1 answer
19k views

How to increase size of /boot partition using gparted

please help me here i am always getting messages saying no free space available in boot partition. output of ls -alh /boot total 79M drwxr-xr-x 4 root root 1.0K Sep 7 20:53 . drwxr-xr-x 23 root ...
Rishin Ravi's user avatar
2 votes
0 answers
50 views

Stop service during boot

Ok I did a stupid thing. I created a script file which is suppose to change permission on a folder during boot up. Instead the script is changing permissions on the root path ("/") and all sub-folders....
GeekyDaddy's user avatar
2 votes
0 answers
144 views

Ubuntu doesn't boot (grub rescue - Unknown filesystem)

I turned up my PC like every day, but today doesn't boot normally. After the BIOS POST and the "Loading operative system...", it shows something like this: Error: Unknown filesystem grub rescue> ...
A Ubuntu user's user avatar
0 votes
1 answer
683 views

acer aspire v3-112p not booting ubuntu from hardware

I just kill windows and was installing ubuntu 14.04 in a acer v3-112p, the process seemed allright, but when I was trying to boot the machine again from the HHD, I have this 'no bootable device' ...
Alexis Patiño-Patroni's user avatar
1 vote
1 answer
262 views

Cannot boot Ubuntu on dual boot with Windows 10

I have a dual boot with Ubuntu and Windows 10. Upon startup, what I understand to be called the "grub menu" would display and I could choose Ubuntu or Windows. Today I was doing some work on Windows, ...
Justin's user avatar
  • 41
0 votes
1 answer
66 views

Ubuntu hangs before boot

So, basically I encountered the error when the power went off. I tried to turn on the computer and hit enter to start Ubuntu but the power cut off again. Upon booting, then several boots later the PC ...
user245115's user avatar
  • 1,163
0 votes
2 answers
2k views

Toshiba Satellite dual boot after upgrade to Windows 10

I'm new to Ubuntu and dual booting multiple OS's. I'm pretty noob in general so please bear with me. I've searched around for a few hours and couldn't seem to find what I was looking for, or couldn'...
Paz's user avatar
  • 1
2 votes
0 answers
903 views

Install Ubuntu with full disk encryption - /dev/mapper/vg-root does not exist

I want to install Ubuntu with full disk encryption without swap. Therefore I've followed: Install Ubuntu 15.04 with full disk encryption, but without swap partition It didn't work, thus I've also ...
piotrwest's user avatar
  • 121
0 votes
1 answer
117 views

How can I dual boot Ubuntu and Windows 10 but have my PC boot into windows without prompting me at start up

I want to be able to put Ubuntu on a spare Hard Drive of mine while still primarily booting from Windows 10 on my SSD however I would like to be able to boot straight into Windows by default without ...
Calum Harris's user avatar
0 votes
2 answers
3k views

Problems with boot "Windows Boot Manager boot failed"

I have a dual boot of Ubuntu 14.04 and Windows 8.1, and I am having problems with booting into Windows and Ubuntu. First what happened was that I was unable to load into ubuntu. It would say ...
Plinth's user avatar
  • 103
0 votes
1 answer
133 views

I changed Volumegroup name via Webmin, now I can't boot. Stuck on initramfs

I will summarise how I created this error. I created a lvm, then changed the name of volumegroup. It was ubuntuvm-vg I renamed it ubuntuvmvg. I mounted lvm volume fine and to make sure it also auto ...
emrecnl's user avatar
  • 860
25 votes
8 answers
92k views

Got a "Your installation CD-ROM couldn't be mounted" error message when trying to install Ubuntu from a bootable USB

I am attempting to install Ubuntu Server 14.04 on a Lenovo ThinkServer TS130 with a USB flash drive (there is no DVD/CD optical drive onboard), however after the keyboard selection the following ...
StixUvF's user avatar
  • 253
0 votes
1 answer
355 views

Install Ubuntu to RAID0 created from "Live" desktop

I am booting 14.04 Desktop 64-bit to the "Try" desktop (Live). In the "Live" boot, I use dmraid to construct a softraid from the two 750GB hard drives on my machine, and then select that when I ...
b0bh00d's user avatar
1 vote
1 answer
368 views

Ubuntu 15.04 Secure Boot Problem

I have a system with Ubuntu 15.04 and Windows 10 dual-boot. Everything worked fine with secure boot on. But now it suddenly stopped working and Ubuntu can't boot with secure boot turned on (through ...
Seif Ibrahim's user avatar
1 vote
0 answers
219 views

OS installation failure

Decided to try Linux after a decade of using Windows, but unfortunately on setup met these issues. [8.555642] ACPI PCC probe failed starting version 219 And later goes huge list of other errors like [...
Oscar's user avatar
  • 111
1 vote
0 answers
74 views

Need help with boot repair tool: After installing Ubuntu along side w Win7, wont boot, ran bootRepair tool, how do i make BIOS boot on sdc?

So I previously posted the initial part of the problem here: https://askubuntu.com/questions/667783/grub-rescue-prompt-booted-from-live-usb-missing-config-file-in-grub-dir-bootr I installed Ubuntu 14....
JazzyBelle's user avatar
1 vote
0 answers
186 views

"Task (agetty) :1694 blocked for more than 120 seconds"during boot

I ve been getting this mesaage constantly ( in my lenevo z 560, if it matters) during boot process of Ubuntu 15.04 . It has been hours...Thanks in advance for any help!
Sai Charan Nivarthi's user avatar
0 votes
1 answer
67 views

Can't Install Ubuntu on my laptop

When I boot ubuntu, after selecting the language, I Click Install Ubuntu along with windows 7 and the computer just restarts. From youtube videos I cannot go to the section where you select the size ...
user avatar
0 votes
2 answers
91 views

Deleted Ubuntu prtition from machine and going back to Win - can't get past "grub rescue" on startup [duplicate]

I wanted to go back to an all Windows machine after trying Ubuntu 15.04. It was a good experiment, but not for me. I had installed Ubuntu 15.04 on its own partition and it put in a dual boot menu. At ...
ejk2891's user avatar
1 vote
1 answer
1k views

Freezing Ubuntu while installing from live usb

I have tried to do a live usb from different resources ultraiso, universal usb, rufus, but always have the same effect, the setup freezes after some minutes. I even tried doing live dvd, but it had ...
Oleksandr Verhun's user avatar
8 votes
1 answer
5k views

Ubuntu won't boot without all drives connected & mounted

I recently revived this old computer with Ubuntu to use it as a local network fileserver and all has worked out well. I've been able to connect all my hard drives laying around and get samba working. ...
thibmaek's user avatar
  • 183
1 vote
0 answers
102 views

Installing Ubuntu on a laptop with malfunctioning windows

I am trying to install Ubuntu on a laptop, that won't boot Windows, it always just asks for reboot. So I decided to install Ubuntu instead and get rid of windows entirely. I started the installation ...
David's user avatar
  • 111
2 votes
1 answer
2k views

Why must an EFI partition be at least 100MB?

According to Ubuntu documentation, an EFI system partition must be: minimum 100Mib. 200MiB recommended. My EFI partition has been 70MB for a long time, and less than 4MB of it has ever been used. ...
EmmaV's user avatar
  • 219
0 votes
1 answer
391 views

Ubuntu Gnome 14.04.3 64bit Freezes on boot

- this screen, but without the memory test. My laptop had Windows 8/8.1 on it - can't remember now. I initially wanted Ubuntu as an OS, so I downloaded the .iso, created a bootable usb and installed ...
xjhnny's user avatar
  • 1
2 votes
0 answers
426 views

15.04 Can only boot with upstart, systemd boot fails

If I try a normal boot into 15.04, I get thrown into a command line-only session with some disks marked read-only. I can boot fine with upstart. The tail end of dmesg when I boot under systemd is: [...
slant53's user avatar
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