This tag is ambiguous: use grub2 or grub-legacy as appropriate.

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For what are disk signatures being used for by GNU/Linux (distributions) / grub?

I am talking about disk signatures in context of the MBR. The area from 441 to 445 bytes. For what does the GNU/Linux kernel, GNU/Linux distributions usually use disk signatures for? I only found ...
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1answer
305 views

How to change the disk signature of a raw image?

I am talking about disk signatures in context of the MBR. The area from 440 to 444 bytes. Let's say I got a bootable raw image (bootable in a virtual machine). How can I set the disk signature to a ...
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3answers
2k views

How does Linux deal with a separate /boot partition?

I am interested to learn about how Linux deals with a separate boot partitions. I am not interested in actually doing this, but I would like to know how this works under-the-hood. Consider a hard ...
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1answer
100 views

Booting from a hard disk partition .. update-grub?

I am trying to install Debian by using a hard disk partition only. I want to install on /dev/sda6 I used dd to copy a Debian ISO image to /dev/sda5, a newly formatted ext4 partition. I ran ...
3
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1answer
213 views

Password protect Grub2, but still allow normal boot

I have seen this link , but I don't have grub.conf in the first place. His situation is the inverse from mine though. This link explains quite a fair bit on Grub2, but I am still clueless as to how ...
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1answer
5k views

What do the kernel parameters acpi_osi=linux and acpi_backlight=vendor do?

I had troubles with the screen brightness control in my laptop and I fixed it by adding the acpi_osi=linux and acpi_backlight=vendorparameters to the filegrub.cfg. I'd like to know what these ...
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1answer
82 views

can /boot be on a different drive than grub or lilo?

I just got a vizio CN15-A5 laptop, which has both a 1TB HDD and a 32G SDD. I am going to use the SSD with dm-cache, however, I would to make /boot a partition on the SSD, and the laptop's BIOS doesn't ...
3
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1answer
7k views

How do I remove the timeout in the boot menu

I am a beginner to Linux so I installed several operating systems on my computer in a multiboot configuration (Ubuntu, Linux Mint, Windows, ...). When I turn on my PC, the boot menu appears with a ...
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1answer
2k views

Everything works in the auto-generated kickstart file for installing centos-linux except for selecting target drive + boot dot

I discovered that if I copy the auto-generated kickstart file in CentOS Linux, I could re-install CentOS Linux without having to fill stuff, and so on.. It appears centos saves the auto-generated ...
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0answers
315 views

Stuck on installing grub to a usb stick (unknown filesystem/no such partition)

I just spend all day on trying to get my system to boot again, I'm getting a bit desperate...snif. The setup is as follows: a debian installed in a luks encrypted usb hard disk with lvm volumes for ...
1
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1answer
173 views

Ubuntu 13.04 on Acer x64 PC, only boots after starting recovery

I have this strange problem with my Acer E1 421. First of all it's important to say that I've upgraded this laptop's memory to 8gb RAM instead of 2. I decided to remove Windows 7 x64, and install ...
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7answers
22k views

How to Reset Forgotten Root Password in Fedora 19 from GRUB

YES, FEDORA 19. I saw a lot of information about how to do it but doesn't work with this version. All the tutorials explain the method for older versions of Fedora, i didn't found anything about ...
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2answers
773 views

Fresh Install Scientific Linux No Operating System

I just wiped the hard drive on a desktop computer and used a LiveUSB to install Scientific Linux 6.4, the x86_64 veresion. I went through and simply let the installer use all its default ...
4
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1answer
1k views

How to boot after RAID failure (software RAID)?

Previously I had a software raid set up using (mdadm) of drives sda and sdb. sdb failed and the only way to reboot the system was by unplugging the second hard drive. Now I've added fresh sdb and sdc ...
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0answers
189 views

vaio grub removal after default windows setup

After installing default factory windows xp from VAIO VGN-NR, and hence removing the Ubuntu on its hard drive, the grub does not allow the windows to boot up properly, giving the prompt: "no such ...
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2answers
911 views

USB3 drive plugged in to PC makes computer hang on “welcome to grub”

I have a Seagate 2TB USB2 hard drive, ext4 formatted. If I plug it in to my system and boot, PC gets stuck at "welcome to grub". If I restart without the USB drive plugged in, the system boots ...
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0answers
130 views

Lost access to grub after installation of Peppermint 4

I am hoping someone would be able to help me. I have installed peppermint 4 but after restarting it, the grub menu didn't show up and now it boots straight into Windows. I went back into peppermint by ...
2
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1answer
889 views

GRUB does not boot automatically

GRUB does not boot my kernel automatically or display a boot menu. Why not? My /boot/grub/grub.conf contains the following default 0 timeout 5 root (hd0,0) kernel /boot/3.8.13 Instead of booting, ...
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2answers
1k views

Cannot boot Fedora Linux

I cannot boot the operating system on my laptop. I have three versions of the kernel installed and none of them will boot. Booting into Windows (installed in a separate partition) still works, so I ...
3
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1answer
609 views

Grub and usb serial support

How to access the grub menu using a usb serial converter? I know it's possible to have grub menu in serial console, putting these lines in grub.conf: serial --unit=0 --speed=9600 --word=8 ...
2
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1answer
1k views

grub rescue prompt after boot-repair

I want to run Windows 8 and Linux Mint 15 in dual boot. After installing Mint I could no longer boot Windows 8. After running boot-repair from a USB device I can't boot either of them anymore. I just ...
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1answer
4k views

How to edit file from grub prompt in RHEL6?

I changed the file which is in /usr/share/xsessions/gnome.desktop and now I want to change it back to its original state from a GRUB prompt because now my system is not able to login.
2
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1answer
62 views

Theoretical possibilities for cpu emulation built into boot-loader or kernel?

Is it a crazy idea to somehow make a blend of grub and qemu in order to boot linux kernels or any kernel of any cpu type supported by qemu or the built-in cpu? I know it might be impossible to detach ...
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0answers
1k views

Problem with openSUSE 12.3 dual-boot installation (with Windows 7)

I have a current Windows 7 64 bit installation that I'm using and I wish to create an openSUSE 12.3 partition on my HDD (not my SSD Windows drive). I used the Windows Disk Management tool to shrink my ...
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2answers
1k views

Getting error opening Windows. Error 1: Filename must be either an absolute pathname or blocklist

I've installed CentOS 6.4 on UEFI machine. Created /boot/efi partition and installed grub in it. But when I open Other in the grub menu I get this error: Error 1: Filename must be either an ...
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2answers
2k views

grub error : “File not found” for separate /boot/efi partition

I've installed CentOS 6.4 on UEFI enabled machine, created /boot/efi partitions. But my grub is not automatically starting, if I start the PC, I start in Windows 8. I can only start CentOS by ...
2
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1answer
192 views

Add Ubuntu to list of Grub boot options

I have an old laptop with an old version of Debian. I would like to install Ubuntu as well. Is it possible to install Ubuntu from the HD (not a rescue CD or flash-drive) and have it reside as a Grub ...
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0answers
74 views

Unable to Boot into F17

I was currently running Win8 and F17 as a dual boot on my home desktop with an i5 chip and Asus UEFI BIOS. Unfortunately, while I was in Win8 I accidentally removed the partition that held my F17 OS. ...
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2answers
737 views

Real mode and loading linux kernel confusing

As far as I know, protected mode will be activated in kernel and in grub stages it still real mode. My misunderstanding is: In real mode, total memory available for use is less than 1MB but how grub ...
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0answers
197 views

Clonezilla Grub

I am trying to restore a disk image with clonezilla. However, after I do so, a grub menu pops up showing the 4 standard options(os, recovery, memtest...). My original image did not have this and I ...
3
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2answers
2k views

Install grub on LV container for VM

I'm having difficult time installing grub in LVM LV container for a VM. This is the partition table: # parted /dev/mgtvg/linux2os print Model: Linux device-mapper (linear) (dm) Disk /dev/dm-7: 129GB ...
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2answers
805 views

Transfer a Fedora system to another computer

I'd like to transfer my Fedora to a remote machine. Fedora is under Grub 2.0 and on the remote machine there is a Centos system and Grub 0.97. In fact, I have two questions. First is how to properly ...
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1answer
999 views

Linux Mint on laptop fails, gives grub error

I am trying to install the latest Linux Mint onto my laptop via a USB stick. The laptop previously had Ubuntu, and it had a separate /home partition. I'm overriding and reformatting the / partition, ...
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1answer
345 views

Grub does not fit the screen

I have a problem with my grub installation. The screen is "moved" to the left a couple of pixels, which means that I cannot read the first 20 or so characters of the entries when I boot. I'm ...
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2answers
87k views

Boot windows from grub rescue command prompt

Previously I had installed the Ubuntu 10.04 and Windows 7. Now I logged on to Windows, opened thepartition editor and deleted the volume containing the Ubuntu (Thought it will delete the Ubuntu and ...
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0answers
756 views

GRUB can't find an existing file?

I'm trying to install GRUB, but when I try to boot, I get this: error: file '/boot/grub/i386-pc/normal.mod' not found. But that file exists on the drive I'm booting to. Why is it saying "not found" ...
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2answers
1k views

Can I delete the MBR from GRUB? [closed]

Can I delete the Master Boot Record from GRUB? If so, how?
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0answers
246 views

unionfs filesystem

I recently learned about unionfs and aufs and would like to put it to some real use. The scenario I have in mind is the following. Boot a machine with ubuntu on it which will serve as our base. Make ...
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2answers
683 views

Can I measure cold boot time using logs?

I want to measure the time it takes from loading grub until GNOME starts. Can I do this using existing logs? What alternatives do I have to measure the time it takes from grub until GNOME loads?
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2answers
244 views

How is the kernel loaded?

I am trying to understand the Linux boot process, and after reading quite some amount of documentation there is one point that I still can't seem to understand. So the basicis is BIOS -> Grub MBR -> ...
2
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4answers
4k views

grub waits for user input when booting as guest in virtualbox

I have several ubuntu guests inside a Mac OS X virtualbox host. When I start them, about half of the time they correctly boot and get to their login screens/start all their services. The other half of ...
4
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1answer
3k views

Rotate console on startup (Debian)

I want to rotate my console (not X Server) by 90 degrees (clockwise). The following seems to work for me: echo 1 > /sys/class/graphics/fbcon/rotate; however, I'd prefer to use a kernel option in ...
2
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1answer
320 views

Grub loading slowly with SSD

Since yesterday, I added a brand new SSD in my PC, and I am experiencing a very fast boot from grub menu. The problem is before arriving to this menu, I must wait for a long time (~30s in most cases). ...
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1answer
977 views

Grub with two hard drives

I am trying to install Mint14 on my machine having two hard drives : Samsung SSD PM830 SATA : 128 Gb ( sda ) - Windows 7 (i want to keep this) ST9500423AS ATA : 500 Gb ( sdb ) - ...
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0answers
435 views

Mint 14 does not detect my first hard disk

I have two hardisks installed in my machine : Samsung SSD PM830 SATA : 128 Gb ST9500423AS ATA : 500 Gb When I start Mint installer, it only showed me the 500Gb harddisk.So I partitioned it into ...
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0answers
643 views

Installing 12.04LTS Server on a Fake RAID10

Scenario Install Ubuntu 12.04LTS Server on a RAID10 with boot on a RAID1. 4 - 2Tb SATA Hard Drives 3 Partitions (/boot, /, and swap) boot (256Mb from each disk) setup in RAID1 /dev/md0 partition ...
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2answers
1k views

Kernel/grub : how override root parameter inside initrd script

I have an old kernel ( 2.4.37.9 ) and I want to override or substitute the root=XXXXX parameter to send to the kernel inside the initrd script. I already made some attempt to do that but it seems ...
4
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1answer
404 views

Using a custom name for root device in GRUB

I'm working on old distro ( slackware 8.1 ) using a kernel 2.4.37.9 and I have the following problem. I want to use a custom name for boot device, say for example /dev/root1, which can replace the ...
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1answer
609 views

Running a script as Grub boot option

I'm assembling some DR stuff for my Linux boxes. One item that would be really handy would be a GRUB option that would run a script to change my boxes from static IPs to dynamic. I know we could do ...
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0answers
236 views

Redhat Grub not working after Fresh Install

Today i installed redhat on one server this server will be used on DR site as a backup. System has 2 HDD with 500GB space and I created the RAID0 and after that i completed the installation. But ...