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17
votes
2answers
54k 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
2answers
13k 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 ...
4
votes
3answers
12k 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
10k 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 ...
3
votes
3answers
14k 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
1answer
2k 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
109 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
2k 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
630 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
1k 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
1k 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
654 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
1answer
138 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
387 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
805 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
3answers
12k 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 ...
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
2answers
826 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
1answer
788 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
519 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
4k 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
1k 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
774 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 ...
1
vote
1answer
438 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
6k 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 ...
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
515 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
657 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
2answers
66 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 ...
1
vote
0answers
49 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 ...
1
vote
1answer
102 views

How to make update-grub recognize zfs datasets as root in /etc/fstab and add minimal set of zfs options?

I'm having trouble to find out how to make update-grub of grub-efi 2.02~beta2-9ubuntu1 recognize the specification of a ZFS dataset as root device in /etc/fstab and conditionally add a minimal set of ...
1
vote
0answers
37 views

Two copies of Ubuntu loader detected by Boot Manager

I have Windows 8 and Ubuntu on my system. I recently upgraded from Ubuntu 13.04 to 14.04, and ran Boot Repair in order to make the GRUB the default loader. However, it failed to achieve what I wanted, ...
1
vote
1answer
817 views

Boot-repair error on dual boot system with Ubuntu 14.04 and Windows 7

I have a laptop with both Windows 7 and Ubuntu 14.04 installed. Both OS were installed on UEFI mode and are 64 bits. Ubuntu 14 was installed using the upgrade option from Ubuntu 13.10. After the ...
1
vote
0answers
35 views

How to boot Ubuntu automatically?

I am using Ubuntu GNOME 13.10. I have made one backup image with Clonezilla. The backup includes 2 partitions — one is /dev/sda1, where is the EFI (only the EFI folder from /boot/efi/EFI), and the ...
1
vote
0answers
182 views

Failed to boot Windows 7 after installing Ubuntu 12.04, invalid EFI file path

First I installed Windows 7 64-bit ,then I installed Ubuntu 12.04 64-bit. When installing Ubuntu, I found my BIOS was UEFI, so I installed Ubuntu like this: https://help.ubuntu.com/community/UEFI ...
1
vote
0answers
1k views

Update grub-efi-amd64 on 14.04 [closed]

Can't update grub-efi-amd64 package on MacBook Pro Retina 13 early 2013. Got the next output: Setting up grub-efi-amd64 (2.02~beta2-6) ... Installing for x86_64-efi platform. grub-install: error: ...
1
vote
1answer
962 views

Unable to boot to Ubuntu

Just got a new laptop and removed Windows 8 and installed 13.10 using LiveUSB. Initially it was booting to "No boot media" but I was able to resolve it with boot-repair. I realized some of the items I ...
1
vote
0answers
2k views

Dual boot windows 8 and ubuntu 12.04 irst, ubuntu not booting (black screen)

I'm trying to dual boot Windows 8 and Ubuntu 12.04 on amy new Asus Zenbook U500VZ with 2x 128 GB ssd in raid0 using Intel Rapid Storage Technology (Windows preloaded). After a bit of trial and error ...
1
vote
0answers
1k views

grub-install failed; fatal error [duplicate]

I'm having trouble dual-booting 12.04 alongside Windows 8. It's a self-assembled PC, so there's no OEM UEFI or anything like that (just to be safe, I checked the BIOS settings and it was set to ...
1
vote
1answer
615 views

Getting ubuntu 12.10 and windows 8 to work correctly dualboot. Configuring GRUB

There may be several questions on similar lines. But this one is a bit different. My Windows8 installation had stopped working earlier after installing Ubuntu 12.10, (standard : cannot find drivemap ...
1
vote
3answers
1k views

Grub-Efi wrong resolution

My question, as it comes from the title, related to grub, but it's a different thing. I re-installed Windows 7 and Ubuntu 12.10 in UEFI mode (before that I was using normal BIOS) and everything went ...
0
votes
1answer
4k views

Restore backup of WinEFI or UEFI (not sure) that boot-repair made

I have a laptop that supports EFI/UEFI. I have Windows 8.1 and Ubuntu 12.04 on it. The way I installed my OSes was like this: I installed Win 8.1 in the required partitions then Installed ubuntu and ...