Questions tagged [boot]
Use this tag if you have trouble booting Ubuntu or you have questions about the bootup process.
24,382
questions
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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 ...
1
vote
0
answers
111
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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 ...
-7
votes
2
answers
1k
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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?
2
votes
1
answer
719
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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 ...
1
vote
0
answers
104
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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 ...
1
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0
answers
200
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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 ...
1
vote
0
answers
205
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"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 ...
2
votes
1
answer
2k
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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 ...
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1
answer
116
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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 ...
-1
votes
1
answer
68
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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 ...
1
vote
1
answer
2k
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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 (...
0
votes
1
answer
128
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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 ...
1
vote
2
answers
2k
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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 ...
1
vote
1
answer
4k
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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.
...
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0
answers
2k
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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 ...
0
votes
1
answer
32
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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 ...
9
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3
answers
22k
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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 ...
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votes
1
answer
39
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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 ...
1
vote
0
answers
334
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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 ...
0
votes
1
answer
447
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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, ...
2
votes
2
answers
327
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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. ...
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 ...
6
votes
3
answers
63k
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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 ...
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vote
1
answer
591
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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 ...
14
votes
3
answers
50k
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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 ...
2
votes
1
answer
19k
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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 ...
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....
2
votes
0
answers
144
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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>
...
0
votes
1
answer
683
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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' ...
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1
answer
262
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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, ...
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votes
1
answer
66
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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 ...
0
votes
2
answers
2k
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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'...
2
votes
0
answers
903
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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 ...
0
votes
1
answer
117
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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 ...
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2
answers
3k
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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 ...
0
votes
1
answer
133
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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 ...
25
votes
8
answers
92k
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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 ...
0
votes
1
answer
355
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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 ...
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vote
1
answer
368
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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 ...
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0
answers
219
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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
[...
1
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0
answers
74
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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....
1
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0
answers
186
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"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!
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67
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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 ...
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votes
2
answers
91
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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 ...
1
vote
1
answer
1k
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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 ...
8
votes
1
answer
5k
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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.
...
1
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0
answers
102
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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 ...
2
votes
1
answer
2k
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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. ...
0
votes
1
answer
391
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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 ...
2
votes
0
answers
426
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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:
[...