I have a Windows 8 pre-installed laptop here.  I used UNetbootin to create a USB bootable drive for Ubuntu 14.04 x64. I resized my disk partition, and disabled secure boot.   Here's my situation:   In legacy mode: All bootable devices result in this: Syslinux 4.03 2010-10-22 EDD Copyright (C) 1994-2010 H. Peter Anvin et al. I have to reboot and put the system back in UEFI mode to do anything.  In UEFI mode: I select the USB drive from the system boot screen (press f10), and get to the black menu (install Ubuntu, test without installing, check drives). I select install, and I’m thrown back into system boot screen (press F2 for setup, and F10 for boot device.. etc). I never get to the Ubuntu install screen. It loops between the USB Ubuntu install menu, and the system boot screen. I can only load into Windows 8.   System info: ⠀Acer Aspire v5-552G_080F_2_07 ⠀CPU: AMD A8-5557M APU @ 2.1GHz 4 core ⠀Chipset: AMD - k15 IMC ⠀South Bridge: AMD - a76M FCH rev 2.6 ⠀RAM: 8GB ⠀OS: Windows 8.1 x64 build 6.3.9600 ⠀Hard drive: GPT format (500GB) ⠀Graphics: AMD Radeon HD 8550G 2GB DDR3
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I am trying to boot Ubuntu on my computer.  When I boot Ubuntu, it boots to a black screen.  How can I fix this? Table of Contents:
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I have Windows 8 Release Customer Preview on my laptop. I tried to install Ubuntu on it with Ubuntu Windows installer (I have always used this to install, although that was on Windows 7), it installs and asks to reboot, then immediately Windows 8 boots up.  I do not have the option to choose what OS to boot. How can I boot to Ubuntu? VM is not exactly what I would like to use, but it is an option, however a last resort. Any help?
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Hardware:  I've got an SSD (c),an internal HDD (d), an external HDD (e) and a USB flash drive (f).   How this all went down:   I downloaded Ubuntu and used a program to install it on my (F) drive. I reset my computer, ran the (F) drive for boot, and installed Ubuntu. I reset my computer, and it forcibly automatically booted into Windows 10 instead of Ubuntu. I went into Windows 10, and used a program called Easy BCD, by NeoSmart. I followed their guide, but after step 6, it wasn't the same for me. Their guide said that upon rebooting, I should see a grub screen that lets me choose between Windows/Linux and a few other options, however my computer would only boot into Windows 10.  I decided to follow the rest of the guide regardless, however by the end it would let me boot 'windows' or 'linux', but the linux option would always break. It went to a screen with lots of commands, that I thought -may- be a barebones Linux or something, but it definitely wasn't Ubuntu.  I decided to reinstall Ubuntu using the USB flash drive. Upon resetting, no matter what hard drive or format I select for booting (besides the F drive), it says An operating system wasn't found. Try disconnecting any drives that don't contain an operating system. I can boot the F drive and run Ubuntu, but it's a one time version that doesn't save any of my data. When I went into the installation, it still says that I already have Ubuntu installed on the 4TB HDD and that I have Windows 10 installed on the SSD, however I cannot seem to boot into either of them.   TLDR: Windows 10/Ubuntu are both installed, Windows on the internal SSD and Ubuntu on the external HDD. Ubuntu's installation program on the (F) drive recognizes them, however, when I try to boot anything it says An operating system wasn't found.   When I press F11 and force it to boot from the SSD it says:  error: no such device: 83b6c64d-9a2c0467b-a02c-6374ee6ac3dc.  error: unknown filesystem. Entering rescue mode. . .  grub rescue&gt; _   and it will allow me to type some commands.
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I'm still a newbie with Linux but I'm trying to learn. I have two USBs, one is 4GB and has the ISO install of Ubuntu (I think it's called live, the one with maximum of 4GB of permanent storage) and got a 64gb usb to make a permanent full install on it. I installed it following  tutorial and everything looks fine (I had to create the EFI partition with the Terminal though) but it just won't boot, the live install boots without problems.   I'm using the school's computers which have the UEFI menu password protected so I can't access that and I won't have a laptop for like 3 weeks (main reason why I'm doing this). I tested it with a friend's laptop disabling the Secure boot but it still wouldn't boot. I also saw that some tutorials don't add the EFI partition so I tried without that one and still won't work. And I know it's not the 64GB usb not booting because I had a live install on it too before and it booted fine.  Please, I have been trying to make it work for two days now, any ideas? I can barely understand this stuff so if you could explain step by step that would be awesome.
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I have Windows 8 pre-installed, and then I installed GRUB with Ubuntu. Ubuntu is not my thing, so now I want to remove it along with GRUB. From what I have learned, with UEFI, GRUB does not overwrite the windows bootloader in the EFI partition and is stored elsewhere. How would I remove GRUB and make my PC use the Windows bootloader instead? It should be noted that I created a separate /boot partition when installing Ubuntu.
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The SSD is set to ACHI (whatever it is, it was automatically set). Secure boot is set to Other OS (only other choice).  Linux only. No Windows. Hate Windows. No dual boot. Microsoft hasn't touched my computer in years. Windows can suck it.  I formatted both SSD and HDD drives to GPT. - Corsair 30GB SSD (putting / and swap on here) - Old, ~300GB HDD. No problems with the drive have been found. (putting /home here)   The live Mint USB isn't corrupt. I did the checksum before installing, and have done multiple checks on the USB before booting.  Installing Mint in UEFI mode is resulting in "grub-efi-amd64-signed failed to install into /target/". Any forum I found on this error has not had a solution compatible with my problem. That package doesn't appear to exist. The installer will fail upon this message occurring. I have an internet connection. It's hardwired... (insert Metallica reference here). I can cruise the interwebs during the live boot.  Installing Mint in legacy, not UEFI, is resulting in no OS being found.  Specs: - 18.1 Cinnamon (3.2.6) 64-bit - AMD FX-8350 8 core x4 - 8GB RAM - AMD/ATI Turks XT, Radeon HD 6670/7670    I am not sure what the hell is going on anymore.
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I have a Samsung Chronos 7 laptop (NP770Z5E) pre-installed with Windows 8, and I wanted to install Ubuntu 13.04 alongside it, so I can dual boot. Here is what I've done:  Updated BIOS to lastest version (P04ABU) using Samsung Updater Reduced Win8 partition by half, I left the others untouched Created a bootable USB stick using  and a Ubuntu 13.04 64-bit image Disabled FastStartup on Win 8 Disabled Fast BIOS Mode Boot Mode changed to CSM OS  Update:  Also disabled Secure Boot (I had to disable it in order to select CSM OS)  After that I saved the BIOS settings, and shut down the computer. I plugged in the USB drive, powered the computer on, entered the BIOS and tried to change the boot order. Oddly, there was only one option in the boot order screen, the USB drive (HDD didn't show up in the boot priority screen). I ignored that and installed Ubuntu. I've created 3 partitions from the unused spaced left: a 8GB swap, a 100MB BIOS boot partition, and the rest to ext4, mounted in /. Boot loader installed on /sda. After a reboot, this message appears:  All boot options are tried. Press &lt;F4&gt; key to recover with factory image using Recovery or any other keys for next boot loop iteration.  So I went to the BIOS to change the boot device priority, and the list is empty! Enabling Secure Boot and Fast BIOS had no effect. I used the Ubuntu Live USB to check the disk contents, I can see the Ubuntu and Win 8 partitions. I've used Boot Repair (using the Recommended Repair), with no avail, the Boot Repair log is here:  Boot Repair showed me a message about the system being a&quot;EFI system&quot;. I suppose that means that I should have checked out the advanced settings. I don't know how to proceed. I don't know if it's a good idea to &quot;recover with factory image&quot; since I have modified the original partitions. Maybe I need to experiment with Boot Repair's advanced settings.
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My computer shipped with Windows 8 and later I upgraded to Windows 8.1 Right now I'm trying to get Windows 8.1 to dual boot with Ubuntu 12.04, but the Grub menu doesn't show up at all. My computer just boots straight to Windows. I searched for this online and the only answer I get is  to edit /etc/default/grub, but I don't even know what this is and where to find this. I also can't use a bootable CD, only a USB. I really need step-by-step answers that aren't confusing like all the other ones I've found so far.  EDIT: I just rebooted and now the Grub menu does show up but when I try to boot into Ubuntu, it says a file is missing. Windows boots normally though. I have disabled secure boot and fast startup.      Windows failed to start. A recent hardware change or software change might be the cause.     To fix the problem:     1. Insert your Windows installation disc and restart your computer.     2. Choose your language settings, and then click "Next."     3. Click "Repair your computer"     If you do not have this disc, contact your computer administrator or computer manufacturer for assistance.     File: \NST\AutoNeoGrub0.mbr     Status: 0xc000007b     Info: The application or operating system couldn't be loaded because a required file is missing or contains errors.   I'm not sure if that file was corrupted while installing Ubuntu or it's missing.
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I want to remove win 8 and install Ubuntu 16.04 64bit on a Samsung laptop with UEFI. I'm not interested in a dual boot setup.   With the intention of changing the boot order so that I can boot from a USB drive,  I swiped the top right screen corner (charm bar) in the win 8 start page,  going to  Settings>Power (shift clicking on Restart) >Troubleshoot>Advanced Options. However, there are no UEFI settings options on this page.   I would be most appreciative if anyone can offer any suggestions as to where to go from here.
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I have an Ubuntu 12.04 / Windows 7 dual boot. After installing Ubuntu my computer reboots straight to Windows. There is no option to boot Ubuntu.  Specs:   OS: Windows 7 Home Premium     CPU: Intel i5 2500k     mobo: ASUS P8Z68-V Pro     GPU: GeForce GTX 570      SSD: Corsair 120GB (Windows 7)     HDD: WD 1TB      I select the USB drive in the BIOS and boot to it and choose install. I select to manually configure partitions, partition the 200 GB of unallocated space on my 1 TB HDD into 16 GB swap file, 30 GB / ext4, and 154 GB /home ext4.   I made sure that the bootloader is installed on the Corsair 120GB SSD (where the Windows boot is) and the installation goes smoothly.  When I reboot after the install it runs through the BIOS straight into Windows. I have tried upwards of a dozen times and I have also tried with Linux Mint. I have also redownloaded the ISO and used two different programs to create the live USB.   The installation seems to have gone well, as after the installation I can see the partitions I have created in Windows Device Manager.       I currently run Lubuntu on my laptop, but it is not a dual boot. I'm assuming this is a bootloader issue and I am assuming that inside those partitioned files in my screenshot there is a working Ubuntu 12.04. I just have no way of getting to it.    Update: (copied from comment)  I booted using my Ubuntu live USB and used the Boot-Repair tool suggested in .   Upon opening the tool I saw that it was recognizing my SSD as a removable drive and defaulting to install on the HDD. Once I realized that I was able to force install onto the SSD. My computer can now boot Ubuntu.
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I want to install Ubuntu like how you would to a hard drive so I can use it as a portable system. I do not want a Live install; I want something where i can install updates, install drivers, and things like that. I'm really confused because I made a persistent install using UNetBootIn in Windows thinking that would allow me to do that and yet when I booted I still saw the "Install Ubuntu 12.04 LTS" icon.
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I followed this  to install Ubuntu as dual-boot with Windows 8.1 pre-installed as(UEFI),but I am not able to dual-boot and tried    I first burned an Ubuntu ISO on a blank DVD-R to create the LiveCD. Even with secure boot disabled, when I tried restarting my computer, it never booted to the installation screen, and it just skipped to Windows.  After a lot of skimming, I thought I had to put my computer in Legacy Mode in order to get give my CD/ROM drive priority. I installed Ubuntu and used my existing EFI partition. Ubuntu works, but Windows doesn't, probably because my laptop is stuck in Legacy Mode. I tried switching back to UEFI using boot-repair on the Linux Terminal, and going into Advanced Properties -> Grub Location -> Ticking the checkbox for EFI, but it says I need to be in an EFI session, and now I'm just really lost and confused at what I've all done. I can see my Windows8.1 OS on a partition but I want to dual-boot Windows 8.1 along with Ubuntu?   Did I just brick my computer?
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I have a laptop that has Windows 7 64 bit Enterprise edition. It is already filled with plenty of Software and drivers.  The laptop (Dell E6220) supports booting through UEFI, but the insatllition was on legacy BIOS.  When I try to change the booting from Legacy to UEFI I get an error message that no boot device was found (the Windows 7 doesn't recognize as bootable). Is there any way I can configure the current install to allow booting from UEFI or do I have to format and reinstall?
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I installed windows 10 on my laptop in UEFI mode with HDD GPT disk format, then I installed Ubuntu 16.04LTS on another partition. So I have Ubuntu dualboot with Windows 10 now.  I also installed rEFInd (it's like GUI for you to choose between different OSs) because I don't wanna use Grub2 as the default bootloader. Now I want to have Windows 7 too, but when I boot from the USB stick, an error screen showed up saying something like  the windows boot manager is having problems due to a recent hardware change   My system is still working fine so I don't know if the problem came from my system or if the setup I want is impossible.
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I'm absolutely new to Linux. I would like to know how to install Ubuntu alongside the pre-installed Windows 8+ OS.  Should I do it with Wubi, or through the Live USB/DVD?  What steps do I need to take to correctly install Ubuntu?
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Every issue of Ubuntu LTS since 8.04, I have made a Full install of Ubuntu to USB flash drive, and recorded each step..  This has been intended to make a guide/check list for users wishing to create Full install bootable flash drives.  Previously the procedure worked for BIOS boot if created in BIOS and for UEFI boot if created in UEFI.  This year for 20.04 the instructions should work for both creating and running the drive booted from either BIOS or UEFI.  The question is:  How to Create a Full Install of Ubuntu to USB device with Step by Step instructions that work in either BIOS or UEFI.
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The TL;DR, added in the edit:  The question is: How can I make the BIOS prefer GRUB over Windows Boot Manager on the same UEFI boot partition? The problem is not with Grub; Grub does the right thing when the BIOS starts it. The problem is not with &quot;the disk isn't bootable,&quot; because both the Windows UEFI bootstrap and the Grub UEFI bootstrap are bootable. The problem is which UEFI bootstrap the BIOS chooses to boot from.  I'm setting up a new computer, and want it to by default boot into Ubuntu, but have the option to select Windows on boot. This is especially important if power goes out and comes back; I won't even be in the house. I started out by installing Ubuntu 17.04 on my internal NVMe disk, partitioned with GPT to use half the disk, and a separate UEFI boot partition. GRUB boots that just fine, and I see the GRUB boot menu on start-up where I can select whatever items GRUB knows about. Then I installed Windows 10 Pro from a recently downloaded ISO. It installed Windows Boot Manager onto the same UEFI partition, and left the Ubuntu intact (great!) and that boots fine into Windows 10. However, it did &quot;something&quot; that makes the UEFI firmware immediately select the Windows Boot Manager rather than GRUB on power-up. The only way to boot Linux now is to use the BIOS boot manager (F11 on my BIOS) and select the GRUB boot loader manually. The UEFI BIOS knows that there are multiple bootable installs on the UEFI partition, because I can choose between them in the boot manager. However, when I'm in the setup menu in the UEFI BIOS, it just lets me choose &quot;UEFI boot my internal drive&quot; in the boot priority selection -- it doesn't let me choose which particular boot loader on that partition to use. And, by default, it chooses Windows, not GRUB. The internets (and this site) suggests that the old way to fix this is to run update-grub (so GRUB recognizes Windows) and then grub-install (to put GRUB back on the device.) I have done this, but unfortunately, it still has the behavior as described above, where the BIOS by default chooses Windows Boot Manager. (update-grub does find the Windows Boot Manager install, and adds that to the menu, and that menu item works when I manually choose the GRUB partition in the UEFI boot manager.) What can I do to make GRUB the &quot;default&quot; boot on my UEFI boot partition? Using a MSI X399 Carbon motherboard. Second edit: Because the correct answer ends up being mentioned in a comment to a response, I'll repeat it here: &quot;BCDEDIT&quot; in an admin shell on Windows is the working solution. The others don't work.