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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How can I boot Ubuntu trial from USB drive on Windows 8.1 PC with SSD?

I've recently installed Ubuntu 14.04.2 LTS onto a USB drive using the Universal USB Installer. Everything up until this point was fine. I then restarted the computer, and tried to access the boot ...
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0answers
6 views

Ubuntu for Arm on AOC All in One Android Monitor

I would like to install Ubuntu for Arm on an AOC A2272PW4T, a 22" All in One mointor that can act as a display as well as a giant 22" android tablet. I had a slight issue where I got locked out of ...
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0answers
12 views

Windows 7 doesn't boot; no device, invalid sig

Booting to Windows 7 has worked in the past. I don't know what changed. When I select the Windows 7 menu item, I receive the errors: no device invalid signature 468CEF828CEF6ABF Note that I've ...
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2answers
22 views

Unable to boot ubuntu 14.4 from usb on dell inspirton 15 3537

So I recently installed windows 10 on my computer. Before that I had a dual boot windows 7/ubuntu 14.4. Now I wanted to boot ubuntu from a usb. I created a live usb using unetbootin. After that I ...
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3answers
37 views

How do I dual boot Windows 10 and ubuntu 14.04.2?

I doing a clean install so I will be removing everything from my HDD, I have created bootable usb for both the OS, I am currently running windows 8.1 only but want to dual boot both the above stated ...
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1answer
7 views

error fsyncing/closing/dev/sda: input/output error - hdd not detected in BIOS after this error

So here's what happened: I created a ubuntu gnome bootable usb using unetbootin and selected to replace my windows and install a fresh copy of ubuntu. But as soon as ubuntu finished cleaning up ...
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0answers
8 views

Boot error probably about Hard Drive

I'm not sure if this is the right place to put this post but I need solid help on this since I've been having this problem with this hard drive frequently. Please refer to these screenshots for a ...
0
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1answer
11 views

Boot-Repair made Dual Boot System unusable

After an Update to Ubuntu 14.04, the system no longer started and showed the grub rescue prompt. I was able to start from CD by pressing F10 at the beginning to select the boot medium. Then I was able ...
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0answers
6 views

while booting system msg:“(initramfs)unable to find a medium containing a live file system” [duplicate]

i have tried to dual boot my system with window 8 and _ubuntu_14.04- (pre-emphasized textinstalled).as i inserted disk of window 8 and there comes a option of language, after selecting language option ...
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0answers
25 views

Windows 10 crashes after about 3 minutes with Ubuntu 14.04 installed [on hold]

I have Ubuntu 14.04 installed on my machine on a partition. I wanted to install Windows 10, so I installed it to another partition using a USB. Later there was the issue where I could not select the ...
0
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1answer
25 views

Why am I getting this every time I boot up? [duplicate]

Why do I get this ? every single time I boot up. Here is how much free space I got: and here it is in Nautilus: Now how can I clear it up since there is nothing to clear?
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1answer
12 views

Mac OS X and Ubuntu Dual Boot without USB or disc?

I am currently following this guide here: http://www.howtogeek.com/187410/how-to-install-and-dual-boot-linux-on-a-mac/ I ahve downloaded rEFInd and I'm at the step where it wants me to insert a USB ...
0
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1answer
59 views

Messy GRUB after upgrade to windows 10

I was a bit unconfortable with GRUB when upgrading to windows 10. First of all, before upgrading I was dual booting Ubuntu/Windows 7. For the reason everybody know, we have two lines (sda1 and sda 2) ...
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2answers
22 views

I only have ubuntu in a laptop with UEFI. How can I change the OS? [on hold]

Well, Before I start explaining my problem I would like to apologize for the mistakes I could commit since I'm not an english speaker. This is the thing: I bought a laptop and it came with Windows 8, ...
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0answers
15 views

Help with botched 14.04 LTS dual boot install/Auto-boot grub fails to get into windows 8.1

First-time poster here, sorry if the title isn't written well(suggestions welcome) System specs(if helpful): AMD 750k processor Asrock FM2A55M-HD+ mobo Seagate 1TB SSHD(hd0) WD 320GB HDD(hd1) 8gb ...
0
votes
1answer
27 views

rEFInd can't find Lubuntu kernel on Lubuntu partition

I was sent here from another forum. I'll repeat my entire post here for completeness: I'm trying to get refind to boot the Lubuntu kernel directly instead of maintaining the manual config and using ...
1
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0answers
15 views

Ubuntu 14.04.2 new install - boot on recovery mode only

I have installed Ubuntu 14.02 on an old HP 540J with a dual boot Windows XP. The PC is a Pentium 4 with 2.8Gig of RAM. When I try to boot on Ubuntu from the GRU I get a black/orange page but it ...
0
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1answer
22 views

How to reinstall ubuntu [duplicate]

I got a new computer (Dell inspiron 3000 series) was a system of Ubuntu I turned it on Windows 7 . I want to have again the old system what to do. ?
2
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1answer
42 views

Ubuntu 14.04 USB installation drive not recognized during boot(Dell Latitude D630)

Ubuntu 14.04 USB flash drive isn't recognized during boot. I have had a bunch of hardware failures this week and I am down to a hybrid image laptop harddrive with mint 12 installed on it to boot as ...
0
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0answers
36 views

Cannot boot with Ubuntu

Some days ago my daughter (who has her own account on the PC) told me she could not boot the computer (A HP Compaq with Ubuntu 14.04). I do not know how it occured, if she did something wrong (I do ...
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0answers
6 views

Lenovo z510 ubuntu + windows [duplicate]

I need to install ubuntu on my windows 8.1 and I need so I can load at startup or windose laptop or Ubuntu, so I tried it already seems to me it is not correctly installed, and download it into my ...
0
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1answer
12 views

Cannot boot into Ubuntu after resetting NVRAM on iMac

I have an iMac and the sole operating system on it is Ubuntu 14.04 I was trying to solve an issue with the DVD drive and so I reset the NVRAM by holding command+option+p+r while the machine was ...
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0answers
15 views

Need Help Installing Ubuntu on External HD, Switching Boot Order on Windows 10

I had Windows 8.1 and upgraded to Windows 10. Smashing. Since there are some privacy things I don't like about Windows 10, I wanted to install Ubuntu as well for a sort of Dual-Boot setup to learn ...
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0answers
6 views

Installed ubuntu on my windows machine, windows kept hanging before login screen, now so does Ubuntu

So my windows install would seem to load fast, but before it got to any graphic (even the windows loading screen) it would hang on a black screen for about 5 to 10 seconds (sometimes it would hang for ...
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0answers
17 views

GRUB fails to install with LVM setup

I have 1x 160GB HDD and 2x 80GB. The way I want to partition all the disks is as follows, GPT partition tables with 10GB partitions which will be LVM physical volumes. The rest of the disk space will ...
0
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1answer
21 views

How to change cmdline variables on boot or first boot

Not sure if this is the correct place to ask this question. I am running Ubuntu 12.10 on an EMB-3500 board. Its is an I.MX6Q. So my U-Boot saves the evn variable for my video as a development ...
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0answers
25 views

How to add Kali linux as third Os (to triple boot) over Ubuntu and Win8 [on hold]

Currently im having a dual boot PC. i installed ubuntu 'alongside' windows 8 and now im using its grub for swap. Now i want to install Kali linux as third OS and i want to make a triple boot with ...
0
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1answer
29 views

I am unable to install Ubuntu on my partition

I have 2 hard disks - an SSD and normal HDD. My Windows 7 is installed on the SSD. I have created 40 gb of unallocated space on the HDD for installing Ubuntu. While installing the Ubuntu installer ...
2
votes
2answers
205 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 ...
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0answers
24 views

How to boot a USB to reinstall windows when I have ubuntu installed?

I want to go back to windows 7 for now and I am on Ubuntu and it's the only OS that is in my computer, but it seems that when I go to the boot options when I restart my PC, it could not detect the ...
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1answer
20 views

How to create a separate /boot partition after installation when dual booting?

I dual boot Arch Linux and Ubuntu. I have the following partition setup: Here sda1 is where Ubuntu is installed, Arch on sda2. New Partition #2 is the proposed /boot. sda4 is a common home for both ...
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0answers
10 views

Ubuntu booting very slowly

Takes 4 minutes for Ubuntu to boot even with 4 GB RAM and Intel core i5 fifth generation. Please help. Earlier it was booting OK but I installed Fedora alongside and since then Ubuntu boots very ...
0
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1answer
21 views

Error message “Start PXE over IPv6 — Start PXE over IPv4 — PXE-E18 server responce timeout”

When I restart my Dell(INSPIRON 3421) PC, it is showing this message : Start PXE over IPv4 -- PXE-E18 server response timeout,Start PXE over IPv6. Now PC takes 4/5 minutes for successful booting. ...
2
votes
1answer
17 views
+100

Hyper-V Ubuntu initramfs on reboot

On the virtual machine when I update grub (sudo update-grub) and restart I get the BusyBox initramfs shell on boot. I have a checkpoint on the machine so I can easily go back to just before I ran the ...
2
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4answers
2k views

Windows 10 upgrade lead into 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 ...
5
votes
6answers
871 views

hide grub on computer start

I tried all the methods that comes in google search for "hide the grub menu on computer start", but still no luck, I guess things work differently on Ubuntu 15.04 ? this is my grub # If you change ...
3
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1answer
326 views

Swap doesn't seem to mount after update

I updated to Ubuntu 15.04 and now my swap partition does not seem to mount. I'm not an expert, but it looks like the partition does not seem to have a UUID anymore. How do I get the swap partition to ...
0
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1answer
846 views

Ubuntu 14.04 hangs sometimes on boot after CUDA 7.0 installation

in the last couple of weeks I have been struggling trying to set up my laptop for c++, qt5, OpenCV developing. System Info: Latop: MSI GE60-2PE Apache Pro (Graphic: Intl HD Integrated Graphic ...
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1answer
378 views

BOOTCHART : not creating the bootchart after reboot

Should not bootchart create the image file after I restarted the system? It is not happening so. WHat should I be doing?
0
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1answer
78 views

What is the diference between a normal boot and resume option after a recovery boot?

I have an Ubuntu 12.04.5 server machine that hangs on boot, but if I choose recovery mode and then resume, everything's ok. Any clue?!
37
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2answers
26k 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 ...
5
votes
3answers
5k views

error: attempt read-write outside of disk `hd0`

My problem This problem has been plaguing my boot for a while, it happens about half the times I start up my computer. Grub will load successfully, and wait ten seconds for me to choose which OS to ...
2
votes
3answers
4k views

Black screen when trying to install ubuntu 13.10

I am in need of some help. It has been 2 weeks since I bought my first ever windows laptop with the aim of replacing windows but I have been unsuccessful. The hardware is as follows : Asus 15' F550D ...
3
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2answers
6k views

are there any mirrors for boot-repair-disk-64bit.iso?

Trying to recover from a grub error so I'm downloading http://sourceforge.net/projects/boot-repair-cd/. Sourceforge is absurdly slow, it's going to take an hour at least to download 500MB. Are there ...
10
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11answers
56k 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 ...
2
votes
1answer
7k views

Can not mount /dev/loop0 (/cdrom/casper/filesystem.squashfs)

I downloaded 12.04.1 and md5 sum checked them and everything is good. Made a live usb and booted up... Just gets to where its about to start with the purple ubuntu loading screen then it goes back ...
5
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1answer
11k views

Error: invalid environment block. Press any key to continue

Error: invalid environment block. Press any key to continue... The error message appears immediately after the boot screen on purple background. Ubuntu 12.04.1 LTS.
18
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11answers
63k views

How do I hide the GRUB menu showing up in the beginning of boot?

I stopped Dualbooting and I dont want to have to choose the OS anymore and just have it load Ubuntu like normal like before? Any help is appreciated.
13
votes
4answers
26k views

“Not a COM32R image” error when trying to install from a USB key

Not a COM32R image boot is a message that the console infinitely keeps spitting out when I try to install Ubuntu 10.04 from a USB. I created the USB using the StartupDiskCreator in 11.04. What is ...
17
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8answers
33k views

How to fix very slow Ubuntu booting?

When I boot up my my newly installed copy of Ubuntu on my custom rig w/4GB DDR3 RAM and a 3 Ghz Intel Core i7, it takes about a minute and a half at the purple loading screen, and then after logging ...