Questions about the Unified Extensible Firmware Interface that finally replaced the BIOS on newer desktops and laptops with the release of Windows 8. UEFI is independent from CPU architectures and supports booting via UEFI with and without secure boot enabled as well as legacy booting via CSM.

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failed command READ DMA

I have this strange error when I try to install Ubuntu It tries to install during one day to finally success to install Ubuntu probably because of this error. Do you have any idea of what happen? Is ...
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25 views

Where is lib/udev/keymaps in UEFI mode? (16.04)

I was looking at fixing some Fn key problems on 16.04 (like this one or this), but all the guides suggest doing something in lib/udev/keymaps folder, which should contain a bunch of vendor specific ...
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1answer
58 views

Unable to boot in ubuntu after install [Reboot and Select proper boot device]

I am using Samsung RV513 laptop. I recently installed Ubuntu 16.04 LTS and was working fine. Then I reinstalled Windows 7. After a few days, I reinstalled Ubuntu 16.04 LTS. Now whenever I start ...
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0answers
25 views

Correcting crashing/grub issues with partially failed install

I had issues completing grub installation on an mdadm system with 16.04, and managed to hack it to boot. However now the system intermittently crashes and continually tries and fails to install grub-...
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66 views

Unable to get to POST/BIOS settings after installing 16.04 LTS 64-bit Desktop

Just installed Ubuntu 16.04 LTS 64-bit Desktop on a Gigabyte GA-Z87X-UD3H motherboard with a Samsung 850 Pro SSD (MZ-7KE512BW). On install, I selected UEFI DVD (had disabled Secure Boot/Fast Boot and ...
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1answer
69 views

UEFI Installation Ubuntu parallel to Windows 10

I follow all the common instructions. I installed Ubuntu through disabling the UEFI block and uneabling the USB boot. When I restart the pc, with the legacy options enabled, I have the following ...
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1answer
35 views

Trouble booting Windows from GRUB [duplicate]

I have a Lenovo Y700 and I installed Ubuntu 16.04 yesterday. I downloaded the iso and installed it in my USB drive using YUMI. I had a problem trying to boot from the USB since it wasn't recognized. I ...
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0answers
53 views

Dual-boot: EFI System Partition is RAW in Windows, readable with LiveCD

I recently installed Ubuntu 16.04 on dual boot with Windows 10 on my laptop, and at a certain point I ran a gparted 'check' on my /dev/sda1 partition (where Windows Boot Manager and Grub are). Now ...
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27 views

Discussion/Needing Help (Acer Aspire ES1-512-P0SY)

As said in the title, I want to discuss of why Linux (here more specifically Ubuntu) sometimes will not work. Here's my situation: I currently have an Acer Aspire ES1-512-P0SY and I feel like this ...
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16 views

Grub fails “could not find ..” when restarting

I recently installed windows 10 (/dev/sda1)and Ubuntu 16.04 (/dev/sdc1). I set my boot bios to boot from ubuntu and grub recognizances ubuntu and windows fine. The problem is when I restart from ...
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0answers
58 views

Having trouble with mouse pad working after installing Ubuntu 16.04 LTS

So I just received on old laptop from a friend and currently trying to install Ubuntu 16.04 LTS on the laptop. Here are the specs of the laptop: Brand: ASUS Memory: 2.8 GiB Processor: Intel Pentium(...
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1answer
128 views

Ubuntu doesn't boot after UEFI installation [solved]

I have tried to install Xubuntu 16.04 on my laptop with no success. Xubuntu = XFCE + Unbuntu so the instalation process and everything is the same as Ubuntu. To sum up, I tried to install it and I ...
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1answer
53 views

Dual boot Ubuntu on Mid 2010 MacBook Pro questions

I don't know if this is the best place to ask this, if not please point me in that direction and I will remove this clutter. Anyways, I installed Ubuntu on my Macbook Pro and it runs fantastic. Though ...
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0answers
39 views

Dell XPS 13: Unable to free up space to dual-boot Ubuntu with Windows 10

I have a Dell XPS 13 9530 Signature Edition. I want to dual-boot with Ubuntu. I can successfully test Ubuntu from a live USB and connect to Wi-Fi. I changed the Boot mode to UEFI from Windows Safe ...
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1answer
72 views

Trying to dual boot but Unbuntu installer does not see Win10

So I am running windows 10, I want to keep it for now and have Unbuntu running along side it. But when I try to install it does not see Windows, I have tried to partition my hard drive but I am ...
0
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1answer
93 views

Installation Ubuntu 14.04/15.10/16.04 not working on MacBookPro 3,1 (Boot freezes on Purple Screen)

I'm trying to install Ubuntu on my old Macbook Pro 3,1. I have tried to install the following versions: 16.04, 14.04 and as last 15.10. (this one is still installed) On my work I used 'Startup Disk ...
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3answers
177 views

In Ubuntu 16.04, which ACPI Global State does Suspend result in?

I have read the post on "What is suspend". However, I would like to know exactly which ACPI Global State does pressing the Suspend button lead to. Can someone explain this? Specifically, how do I ...
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2answers
113 views

Can't boot after installing Ubuntu - dual boot

I've just installed Ubuntu 16.04 alongside Windows 10. After I completed the installation of Ubuntu and restarted, Windows boots as usual ... just as if Ubuntu wasn't installed at all. I've tried ...
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3answers
46 views

Boot issue with Win7 (ntfs) and Ubuntu 14.04 (ext4) on separate hard drives

I have two internal SSDs connected to my motherboard's SATA slots with OS's installed as written in the title. Whether I connect the Win7 or Ubuntu HD as the primary one, I do not see the other HD in ...
2
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0answers
107 views

30-minute boot time on 16.04 with Samsung 950 pro PCIe NVMe

I have the GA-Z97X-UD3H-BK (rev. 1.0) with bios version F8 (latest) with the i7-4790K CPU and 16GB memory. When I boot from my trusty 6Gbps SSD with Ubuntu installed in legacy BIOS mode (times are ...
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0answers
57 views

Nvidia drivers and UEFI working together [duplicate]

I have Ubuntu 16.04 and after enabling Secure Boot Nvidia drivers stops loading. Same is with VirtualBox kernel modules. When I try to force loading kernel # modprobe nvidia_361 modprobe: ERROR: ...
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0answers
20 views

Will we ever be able to install Ubuntu on a Win10 tablet like we can on Desktop? [duplicate]

I've got a nice Win10 Tablet/Netbook, but I hate Win10. I tried Installing Ubuntu casually on it, but It couldnt boot from the installation media. I've found out that this has something to do with ...
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0answers
30 views

The efi file system creation in partition #1 of SCSI1 (0,0,0) (sda) failed

I have been trying to install linux on my laptop and I keep getting this error. I select the automatic install for ubuntu and every time it goes to install this happens, this also happens when I ...
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3answers
2k views

Ubuntu LTS 16.04 Install problems: UEFI and Black Screen after Grub Loader

Good afternoon, all. I have a PC that currently has Windows 10 on it, and I would like to install Ubuntu 16.04 LTS. However, I am having some issues: When I boot to the live media, I get the Boot ...
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1answer
57 views

Windows does not show in GRUB Customizer

I know this question has been asked several times, but none of the answers seem to be working in my case. I have win 10 and ubuntu. but there is no dual boot menu. GRUB does not show in the bootup. ...
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2answers
203 views

Move Ubuntu 16.04 to a SSD from HDD occurring error, no ssd shown in grub menu

I was using an 1TB hdd with uefi boot window10(updated from 7) and ubuntu 16.04 on it.It worked fine.I first installed windows,and then parted 120gb free space for ubuntu,then I installed ubuntu just ...
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2answers
81 views

Deleted ESP (EFI) partition - unable to create new one

I have an Asus Ultrabook UX32A. I have a small SDD with 24 GB and a big HDD with 500 GB. Windows 8 was pre-installed. I deleted ALL Partitions on both discs (because I though I do not need any of them ...
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0answers
54 views

Ubuntu system not booting from USB stick

I have installed two versions of Ubuntu on two hard drives in my Asus laptop, one running with Ubuntu 14.04 and the other with 15.10. Originally, both systems worked, however, today when booting up ...
0
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3answers
69 views

Install Ubuntu 14 LTS next to windows 10

I would like to install Ubuntu 14 LTS next to windows 10 (HP notebook). My disk partitions are these (GPT): http://postimg.org/image/apog4l7wh/ . I have disabled secure boot, fast boot and I have ...
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0answers
15 views

Convert UEFI to legacy on encrypted disk

I've installed Xubuntu 16.04 with ticking the box "encrypt whole system" (basically LUKS on an LVM) with UEFI boot loader. Now I would like to switch to legacy booting. How can I reconfigure (?) GRUB ...
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0answers
25 views

Ubuntu on a flash drive lost EFI partition

Long story short: My ubuntu install on a flash drive is missing a uefi partition after a bad crash, causing it to be non-bootable. Trying to boot-repair returns a GPT detected. I really want to avoid ...
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0answers
25 views

Erratic Fn key behaviour

I've recently installed Xubuntu 16.04, and now the switching between the normal functions of the F-Keys and their "special" functions is really irratic. For example, after booting F1 goes to the help ...
1
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2answers
752 views

Dual Boot Windows 10 and Ubuntu 16.04 on UEFI

As a long time user of Ubuntu, I recently purchased an Acer Revo One which came pre-installed with MS Windows 8 on a 60 Gb SDD. This time I decided to keep the licence. I took advantage of the free ...
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0answers
157 views

Can't install Ubuntu 16.04 on Sony Vaio

I hope you can help me quickly, even if my english isn't very well at this time. So: I got a Sony Vaio and Ubuntu 14.04 has been installed and worked fine till this morning. I have mounted the .iso ...
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0answers
17 views

live USB shutsdown after GRUB

I'm having an issue with my Ubuntu install - it randomly decided not to boot this morning, in trying to recover, I've downloaded and burnt to USB Ubuntu to create a live USB install. When I plug this ...
1
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1answer
138 views

Troubleshooting Secure Boot

When trying to boot Ubuntu with UEFI Secure Boot enabled, I get the following error when loading GRUB: Boot failure : a proper digital signature was not found. One of the files on the selected ...
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1answer
82 views

Grub and UEFI boot Problem

My laptop is Lenovo thinkpad edge e530c. I was trying to boot Ubuntu 16.04 amd64 ISO from Grub. So I created the following menu entry for Ubuntu ISO in /etc/grub.d/40_custom file on the current ubuntu ...
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1answer
82 views

Add an eSATA drive with bootable Ubuntu 16.04 to a Windows 7 UEFI dual boot PC

I have a HP Envy 700-215xt, with UEFI, and WIndows 7 on it's original 1 TB drive. I've added a 2 TB internal drive, initialized as GPT, and installed Fedora 22 on it's first 500 GB. The UEFI boot ...
0
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0answers
35 views

Having BIOS+UEFI on MBR Partitioning Scheme

I have a Dell laptop with a Windows + Ubuntu dual boot configuration in Legacy boot. I wanted to try out Ubuntu in UEFI since it would boot in just about 2~3 seconds in my earlier config. So my ...
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0answers
15 views

Chainloading MBR and UEFI using “Boot from first HDD option”

I have a laptop booted with UEFI: Windows 8.1 + Ubuntu. For the sake of curiosity, I wanted to ask: What will happen if I boot a live MBR+BIOS Ubuntu and select "Boot from first HDD" in the Grub? ...
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1answer
55 views

Installing Ubuntu on a second internal drive in an “independent way” (no boot option)

I have a 120 Gb SSD drive (/dev/sda) where Win7 is installed and a second internal drive (/dev/sdb) that I use for data storage. Both of them have GPT partition tables. Now, I want to install Ubuntu ...
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0answers
26 views

Can't mount /boot/efi partition under install

I'm trying to install Ubuntu Server on a IBM server x3550 M4 with ServerRAID (RAID1) but I have a few problems. Under the partition menu I get this error. We have used Ubuntu before on our IBM ...
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0answers
24 views

GPT, grub and mdadm. sda drive replaced, raid rebuilt in recovery mode, but now server won't boot

This is how partition table loooks like: (parted) print Model: ATA TOSHIBA DT01ACA2 (scsi) Disk /dev/sda: 2000GB Sector size (logical/...
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1answer
303 views

Reliability of Ubuntu 16.04 on Macbook Air >=2013-mid? [closed]

I want to replace my OS X on Macbook Air 2013-mid with Ubuntu 16.04, so no boot-camp because limited SDD. I know the thread EFI boot Ubuntu 14.04 on a Mac without rEFInd and here old overview about ...
4
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0answers
455 views

Why was I asked to create a password in order to disable secure boot on initial installation of Ubuntu 16.04?

On initial installation of Ubuntu 16.04, I checked off "Install third-party software" and, underneath it, I was prompted to check off another option which would allow the OS package to automatically ...
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0answers
11 views

Ubuntu Live USB showing completely black screen

Contrary to most questions, my 27" iMac is too big for Ubuntu to display on. Pre-startup messages show, but no text, no splash, and no desktop ever appears, just a black screen. I do hear the bongoes, ...
5
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1answer
793 views

Login broken after 15.10 -> 16.04 LTS upgrade, related to NVIDIA driver

I have just updated my system from 15.10 to 16.04 via sudo do-release-upgrade. During this process, it displayed a screen with the following message: Your system has UEFI Secure Boot enabled. UEFI ...
1
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1answer
54 views

Dual-Boot Problem with Pre-Installed Windows 8.1 & Ubuntu 14.04

I do understand similar questions already exist. Yet mine seems to be a problem that despite trying hard to address, I haven't been able to solve. Despite having a working Ubuntu LTs 14.04 ...
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1answer
90 views

Bootable pen drive 16.04 is not able to recognize by my laptop(UEFI)

I am using ubuntu 14.04 in my desktop and now i want to upgrade it to 16.04 so i downloaded ubuntu 16.04 image file and i make my pen drive to bootable by using Startup Disk Creator available in ...
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0answers
244 views

Cannot access Lubuntu 16.04 LTS installer via USB

I'm currently trying to install Lubuntu 16.04 LTS (x64 version) on my Odys Trendbook 12 via USB. I've already checked the following: - even though it came preinstalled with Win10 32-bit, I do in fact ...