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23
votes
2answers
72k views

How can I change/convert a Ubuntu MBR drive to a GPT, and make Ubuntu boot from EFI?

I recently have upgraded my PC, my new Motherboard (ASUS M5A99X EVO) uses UEFi instead of the regular MBR option. I have a Ubuntu 11.10 installation that I did when I had my previous hardware (MSI MS ...
5
votes
3answers
14k views

How to install Ubuntu server with UEFI and RAID1 + LVM

I used to install my servers with LVM over software RAID1, and grub install on the MBR of both drives. Now I have an UEFI server, and the compatibility (BIOS) mode does not seem to work. So I went ...
5
votes
2answers
15k views

Invalid EFI file path

i've just installed Ubuntu 12 on my new laptop ( with Win7 64bit pre installed ) in EFI mode and now i can't load Win7 anymore ( Ubuntu just loads fine from grub ). When i select the Windows 7 entry ...
5
votes
2answers
75 views

How do I install two independent Ubuntu installations on a single hard drive with UEFI?

For security reasons I would like to install a secondary completely independent operating system on a single-hard-drive computer using UEFI. Both installations should be able using different LUKS ...
4
votes
4answers
18k views

Uninstalling GRUB from UEFI laptop

I installed Ubuntu alongside Windows 8, however have decided to unisntall Ubuntu. First I booted into Parted Magic and, using GParted deleted all the ext4 and swap partitions. This leaves me with ...
3
votes
3answers
15k views

ubuntu 12.04.3 LTS installation failed. says: “GRUB installation failed”

The error maessage read as-"the grub-efi-amd64-signed package failed to install into /target/. Without the GRUB bootloader the system will not load" I'm trying to install it on HP pavilion g6-2303 TX ...
3
votes
3answers
13k views

Best partition scheme for ubuntu + windows with EFI and GPT

I am guessing which is the better partition scheme for a system with EFI and GPT. Currently, I have the following scheme: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 465.8G 0 disk ...
3
votes
1answer
3k views

Can I install in UEFI mode with the alternate installer?

I'm wondering if it's possible to install Ubuntu 11.04 UEFI mode with the alternate installer. I've read that only grub-efi is needed to boot in UEFI mode. How do I install that?
3
votes
1answer
115 views

Is there anything to remember when I exchange my /?

I have a laptop computer with the following setup: / on a btrfs /dev/sda3 subvolume @ /home on a btrfs /dev/sda3 subvolume @home /boot on an ext4 /dev/sda2 /boot/efi on a vfat /dev/sda1 no swap /tmp ...
3
votes
1answer
3k views

How to reinstall Ubuntu over Elementary OS on an EFI system?

First, a bit of background. I managed to dual boot Ubuntu 13.04 with Windows 8(preinstalled). I disabled secure boot. I had to go in the bios settings and change the disk order to select Ubuntu as the ...
3
votes
0answers
808 views

black tty screens

I get black tty screens when I hit Ctrl-Alt-F1. I already read all other similar questions but I can't seem to find a suitable solution. Here is my setup. I have a fairly new laptop (Jan 2013, Asus ...
3
votes
2answers
2k views

Missing /etc/default/grub

I just re-installed Ubuntu 12.10 after having various issues, it was just time for a re-format and re-install. Installation The install went the smoothest that it has ever gone. Except that on my ...
2
votes
2answers
101 views

Grub loader always takes 10 seconds

The default grub loader is always runing 10 second countdown before launching Ubuntu 14.04. This is how it looks in etc/default/grub: GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 ...
2
votes
2answers
2k views

Can't load GRUB all of a sudden (UEFI problem)

So, the last time I used my Ubuntu installation was last night. Today, as I booted it up, it told me that booting grubx64.efi is not allowed. Easy enough. I know how to re-enable it from my BIOS. ...
2
votes
2answers
2k views

I am having problems booting after I installed Ubuntu. How can I collect information to diagnose and fix the problem?

After installing or updating Ubuntu, I am having problems using GRUB to boot my computer. How do I collect information to determine what is wrong so that I can fix it? Note: This question and any ...
2
votes
1answer
704 views

Laptop that comes with Windows 8 does not show grub

I have a Sony Vaio SVE14A27CXH that came with Windows 8 and UEFI BIOS from factory. I have been trying to install Ubuntu 13.01 with no success. I have already suffered with "Operating System not ...
2
votes
1answer
157 views

Install GRUB from Outside Ubuntu

Running Mac OS and Ubuntu 10.10 booting with rEFIt then GRUB. Updated 10.10 to 11.04 and accidentally put GRUB on the wrong volume (I think swap somehow). Can't boot into Grub. Can I install it onto ...
2
votes
1answer
2k views

After installing Ubuntu 11.10, laptop just restart to POST or go to Internal Shell

Ok, i have been using Ubuntu since 8.04 on my old laptop, but some months ago i got a new one and since that day i'm having some bad times. First lemme describe it. It's a CCE (brazilian brand) ...
2
votes
2answers
49 views

How do I install for a Mac while the Mac's hard drive is in a PC?

Host = HP Pavilion i7 q 820 Target = Macbook Pro 6,2 Basically I have the drive partitioned for swap and boot, with the ISO already copied to the drive, how can I install grub for that target from ...
2
votes
2answers
3k views

How to install ubuntu 14.04 on my Mac Pro 1,1 with a raw hard drive by a bootable USB stick

I have a Mac Pro 1,1 and I replaced the original hard drive with a new 3TB hard drive (just got, never initialized). I try to install ubuntu by a bootable USB stick which I crated on my Mac When I ...
2
votes
1answer
160 views

How to install Windows 8.1 after Ubuntu? I want to dual boot

I currently have Ubuntu installed and an empty partition to install windows in (NTFS). If I launch boot repair after installing windows , will it restore the dual boot functionality?
2
votes
1answer
1k views

How to return from grub prompt to the grub menu?

If you press escape in grub menu you endup with grub command prompt. My question is how can I go back to the menu, without rebooting?
2
votes
1answer
8k views

Unable to boot Windows 8 after Ubuntu installation

I installed Ubuntu on a pc with Windows 8 preinstalled. After installation Grub showed Ubuntu entries and Windows 8 Boot Manager (or something similar), selecting it I got: /EndEntire file path ...
2
votes
1answer
862 views

Unable to EFI boot after Ubuntu 12.10 install (Lenovo E30)

Basically the system won’t boot. After the BIOS screen I get the message: “Error 1692: No operating system found” I ran the ‘boot-repair’ utility without success. Here is the boot info that utility ...
2
votes
2answers
8k views

Windows 8 Dual Boot Ubuntu 12.10 with UEFI broken Windows boot manager

Brand new Asus U500VZ, Windows 8 preinstalled. I removed the fakeraid, turned fastboot and secure boot off, and set the SATA to AHCI and deleted all existing partitions on both SSDs. Purchased ...
2
votes
1answer
7k views

Windows 7 not loading from Grub, Ubuntu 12.04 dual boot

I have the results of my boot script run here: Boot Info Script 0.61 [1 April 2012] ============================= Boot Info Summary: =============================== ...
2
votes
4answers
6k views

How do I install on an UEFI Asus 1215b netbook?

I'm trying to install Ubuntu 11.10 on a UEFI netbook Asus 1215b using an USB stick. I created a fat32 efi partition of 100MB, 2GB swap, and 2 ext4 partitions (for root (/ ) and /home, respectively). ...
2
votes
0answers
179 views

Lenovo onekey stuck in GRUB

I have a Lenovo g50-45 with onekey recovery with Windows 8.1 pre-installed. I dual booted with Ubuntu. Then I uninstalled Ubuntu. then tried to reinstall with USB using onekey. I got this screen: ...
2
votes
0answers
538 views

how to enable secure boot after the installation

Kubuntu 14.04 64bit on a MS-DOS (MBR) type HDD (sda4) Kubuntu 14.10 64bit on a GPT type HDD (sdb5) Windows 8.1 64bit on a GPT type HDD (sda3) these are my installed OSes, both kubuntu installations ...
2
votes
2answers
867 views

Windows 8.1 - unfixable grub

I have a Gigabyte laptop that came with secure boot and windows 8. After a bit of battling, I managed to get my dual boot with Ubuntu 13.10.. Anyway, I upgraded zindows to 8.1, now grub is gone. I ...
2
votes
1answer
1k views

How to change grub-bios to grub-efi

So a while ago I installed Ubuntu on my MacBook. I had to reinstall it because something in the update manager messed up. Not to concerned about that but for some reason after the installation Ubuntu ...
1
vote
2answers
127 views

rEFInd showing 3 ubuntu .efi instead of 2

This is not really a problem, though I am just curious to why do I suddenly see 3 ubuntu, instead of the usual 2. It should be grub64.efi and shim64.efi. Though now it is grub64.efi, ...
1
vote
1answer
2k views

Can not boot Windows on Legacy BIOS after installing Ubuntu on UEFI [duplicate]

Long story short, I installed ubuntu while I was watching netflix and feeling very lazy, and may have lost all my windows 7 files. Quick summary: -Windows 7 was installed on Legacy bios and I ...
1
vote
1answer
646 views

Dualboot install failed? Locked out of Windows

You can't imagine how happy I am after I finally managed to install Ubuntu for the 1st time today. But I still need some help to know how to boot into the other side of my schizophrenic computer, i.e. ...
1
vote
1answer
5k views

How to switch between Gfx cards on Macbook Pro 15" 8.2

I have a Macbook 15" Pro 8.2 Which apparently is supposed to be switchable between the GFX cards with vgaswitcheroo. But /sys/kernel/debug/ contains no switcheroo folder. syslog gives me this. [ ...
1
vote
1answer
2k views

Boot from USB w/ Grub2… computer is useless right now… help!!!

I'm running Ubuntu 12.04 on my MacBook Air, and after a botched update attempt the OS won't boot & recovery mode won't boot. The only thing I can do is drop into the Grub2 prompt. I have a USB ...
1
vote
1answer
38 views

What should I do as apt-get wants to remove grub-efi-amd64-signed

I'm on 15.04 and latest upgrade shows grub-efi-amd64-signed as "to be removed" (along with upgrading grub-common, grub-efi-amd64, grub-efi-amd64-bin and grub2-common) I'm using EFI secure boot, so I ...
1
vote
1answer
34 views

Problems with refind on MBP

I'm running ubuntu on my late 2013 MBPr and dumb decisions have me in a pickle. A while ago I had a triple boot system, but problems with OSX made me more reliant on Ubuntu, and recently I've been ...
1
vote
1answer
333 views

Dist-upgrade in Ubuntu 14.10 tries to remove grub-efi-amd64

A recent security (?) update in 14.10 Utopic Unicorn caused "apt-get dist-upgrade" in Ubuntu 14.10 to try to remove package "grub-efi-amd64", and replace it with package "grub-pc". I use grub-efi to ...
1
vote
1answer
196 views

Restore /boot/efi

Recently I apparently corrupted my /boot/efi partition, I got according error messages at boot and a manual console to remount it. I tried to reformat it (mkfs.vfat 32), reinstalled grub ...
1
vote
1answer
494 views

Windows 8 / Ubuntu 13.10 in dual boot - how to make Grub by default to manage it [duplicate]

good afternoon every. as it's said in the title, I have Windows 8 and Ubuntu on my laptop (EFI) and it boots automatically on Windows 8. To boot on Ubuntu, I have to change the boot order with the F9 ...
1
vote
1answer
2k views

Grub issue in 12.04: “Booting in blind mode.”

I just turned on my PC where I'm dual-booting Ubuntu and Windows 8 and I had the following message at startup: Invalid video mode 'text' Booting in blind mode Fortunately for me the laptop booted ...
1
vote
1answer
3k views

Unable to boot Windows after installing Ubuntu 12.04 - error: invalid efi file path

SOLVED - see UPDATE 2 below (but lost all files/programs on Windows 7) I have a Laptop (ASUS X310A, I installed Ubuntu 12.04 to be side by side with Windows 7 but I seem to have gotten a problem ...
1
vote
3answers
516 views

Installed Windows 7 alongside Ubuntu; No Longer Boots

I installed Ubuntu 12.04 alongside Windows about a week ago and I can no longer boot in to Windows. When I attempt to boot, I get the error, "Invalid EFI File Path." I tried to change the boot ...
1
vote
3answers
2k views

Remove Grub Loader from Mac

I installed Ubuntu (Precise) on my Macbook Pro but now I'd like to go back to OSX but I can't boot off the OSX Snow Leopard DVD to do a reinstall. I have tried booting and holding down "c" or using ...
1
vote
1answer
684 views

problem with grub-efi

I am installing ubuntu on my MacBook, following the instructions here: http://www.rodsbooks.com/ubuntu-efi/index.html Everything has gone well so far. But I have now come to number 19. The cd with ...
1
vote
2answers
3k views

11.10 dual boot no grub menu

I have installed Windows 7 and then Ubuntu 11.10 on my computer but no grub menu came up on reboot and it went straight into Windows. I then removed the Ubuntu created partitions and tried Fedora 16 ...
1
vote
0answers
37 views

windows 8.1 won't let me boot using Ubuntu

I have a Lenovo laptop that came pre-installed with Windows 8. I have tried both desktop versions of Ubuntu, and I get the same result. Upon restarting mt laptop I get a start screen called 'windows ...
1
vote
1answer
65 views

How to boot Ubuntu after removing Windows on UEFI system

After previously dualbooting Ubuntu 14.04 lts with Windows 8.1, I finally bid my farewells to windows and wanted to make a complete switch to linux. I decided to upgrade to Ubuntu 14.10 as there frame ...
1
vote
2answers
570 views

Mac Mini late 2012 14.10 Server won't boot after install

I have installed (and reinstalled multiple times) Ubuntu Server 14.10 on a Mac Mini 6,2 (late 2012). The install media is a USB drive. The computer is connected to the internet through ethernet ...