The software that loads up the operating system or another boot-loader (chain loading).

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31
votes
9answers
3k views

What is the /boot partition really for?

I'm reading a relatively old text on Linux partitions and file systems (the LPIC 1 Certification Bible). It says: Some versions of the Linux boot loaders cannot access a kernel that is outside ...
24
votes
3answers
24k views

Installing Grub 2 on a USB flash drive

MultiBootISOs is a tool that let you install Grub on a USB flash drive. I really like it because it lets me boot from ISO files and let me put a bunch of ISOs on my USB and choose which one to boot. ...
18
votes
3answers
3k views

FreeNAS grub2 booting ISO

I've got usb-keys setup to multi-boot different Linux images. I wouldn't mind adding FreeNAS, and there's a doc with samples to add to grub.cfg menuentry "FreeNAS-8.0.4-RELEASE-x64" { insmod ufs2 ...
12
votes
4answers
3k views

discribe in details tha boot process of any linux system

I am preparing a document in detail showing light on the boot sequence of Linux right from pressing of Power-on button the host to the login prompt appearance. It would be great if we could combine ...
9
votes
4answers
1k views

GRUB on USB Drive — adding OSes

Some Background: Coming from a largely Windows background (though I'm familiar with Ubuntu, etc.) and using a Windows 7 machine to complete this task Have gotten GRUB installed successfully to the ...
9
votes
0answers
271 views

How do I use the TPM to seal away data on an UEFI booted system?

I would like to seal away files on my system using keys stored in the TPM. Since my system uses UEFI to boot, I can no longer use TrustedGrub as a boot loader to maintain my trust chain. Are there any ...
8
votes
3answers
17k views

What is the “Bootable flag” option when installing a distro?

Is the "bootable flag" needed in today's distributions? If not, then Why is it still in the installers? What is it exactly?
7
votes
4answers
23k views

Installed Centos 7 after Windows and can't boot into CentOS

I wanted to setup a dual boot for Windows 7 and CentOS 7 I had a Windows 7 machine with 500GB disk. I shrank the Windows partition to provide space for CentOS 7 (roughly 230GB). I created a USB ...
7
votes
2answers
13k views

How do I configure syslinux to boot immediately

I'm tweaking a Debian live system (built with live-build), and I want it to boot straight into the system from syslinux — no menu, no timeout. According to the syslinux documentation, a timeout value ...
7
votes
1answer
332 views

Can Grub2 multi-boot LUKS/LVM distros with only one boot partition?

There are many tutorials on the internet for multi-booting unencrypted distros using a single boot partition and chainloading. For example, booting 145 OSes. Likewise, there are tutorials for ...
6
votes
10answers
31k views

Install rEFInd on OS X 10.10 Yosemite

I want to dual boot my macbook with Arch Linux and thus tried to install rEFInd using the install script, however, after install rEFInd doesn't seem to start at all? Anyone experienced the same issue ...
6
votes
2answers
1k views

How is a Linux kernel capable of accessing its assigned initramfs/initrd?

I'm trying to understand the boot process of a machine as a whole from the time you hit the power button. There's this one piece from bootloader to initramfs stage I don't quite understand among some ...
6
votes
2answers
1k views

Getting “NTFS5: No ang0” error message when booting Linux Mint

I am getting the following message as shown in the link below when trying to boot into linux mint 13. Try (hd0,0): NFTS5: No ang0 Try (hd0,1): NTFS5: No ang0 Try (hd0,2): NTFS5: No ang0 Try ...
6
votes
1answer
373 views

How to create yaboot partition using a ppc Mac

My computer g4 1.5 ghz PowerBook ppc I need to use this computer to make a yaboot partition on a USB stick. Here is documentation for making a yaboot partition with a Linux machine: ...
6
votes
2answers
3k views

Which Bootloader is Used on a Chromebook?

I installed ChrUbuntu on an Acer C7 Chromebook, and I am able to dual boot Ubuntu 12.04 and ChromeOS and to control which OS loads by default. I tried to edit the /etc/default/grub file and did run ...
6
votes
2answers
1k views

How can I boot the PC-BSD live DVD-ISO IMAGE directly via GRUB2?

Via the loopback command, GRUB2 allows to directly boot an ISO file. Now, I've configured the according menuentry to boot the PC-BSD Live DVD ISO, but when I try to boot it, the FreeBSD bootstrap ...
5
votes
5answers
847 views

Bootstrapping a DSL installation onto a machine with no BIOS boot support

I have a vintage 2001 laptop (Vaio R505) which is very hardware limited. Fortunately there is much that works, but I can't figure how to make it work better. The two biggest constraints are 256MB RAM ...
5
votes
2answers
220 views

Ignorantly dd'd /dev/sda*

I was trying to write an iso to a flash drive. I mistakenly thought that all /dev/sda* are flash drives attached to the system. I wasn't sure how to figure out which was which, so I just unplugged my ...
5
votes
2answers
876 views

How to run a bootloader from Linux?

I want to reboot from Linux to another system (a bootable CD for my current need). I don't want to modifiy the current bootloader, nor to modify BIOS settings. Some Linux CD can be run from Windows ...
5
votes
2answers
277 views

Should I use LILO or GRUB or other?

I am making a netinstall DVD which will have netinstall for 10 different Linux distros on it. I will need to install a bootloader on the disk so I can choose which distro I want to install. Which is ...
5
votes
1answer
259 views

Running one OS per core

I'm interested in using a COTS board like the Wandboard for a project. On one hand I'd like to use something like Ubuntu for user interaction, sounds, TCP/IP stuff, etc. But I also need an RTOS like ...
5
votes
1answer
174 views

Disabling TCP/IP during boot process in linux

I'm trying to install Linux on an FPGA board. The linux flavour is petalinux for Xilinx FPGA chips. The current Xilinx SoC has a Cortex A9 processor and a programmable hardware logic i.e FPGA. I ...
4
votes
2answers
75k views

Recovering from 'grub rescue>' crash [closed]

Originally posted to AskUbuntu.com ... AskUbuntu has adopted a policy of closing questions about EOL (End Of Life) versions. There's a vocal contingent to remove them as well. To prevent ...
4
votes
2answers
251 views

How do I make sure grub is only installed once?

I currently have Windows on one partition, and Ubuntu on another. I'd like to install Quimo, and possibly Mint and/or Lubuntu as well. How do I make sure that only Ubuntu has Grub, and that the ...
4
votes
2answers
6k views

Windows boot option is missing after installing CentOS 7, how can I get it back?

I recently installed CentOS 7 on a machine that has been running Windows 7. I did a dual boot installation and installed CentOS in a partition. But when I boot up my machine, it only gives me two ...
4
votes
2answers
2k views

How do I backup my partition table?

I just bought a new laptop with Windows 8 preloaded but without an actual Windows disk. I would obliterate the whole thing, but I need to use Visual Studio for one of my classes and the most recent ...
4
votes
1answer
1k views

Installed CentOS, Now There is No Windows 8 Options on Restart

I bought a new PC with Windows 8 and wanted to dual-boot linux. I shrank the partition by 50GB in windows, then installed CentOS from a live CD. CentOS is working fine, but I can't boot into ...
4
votes
1answer
366 views

Does the vmlinux header contain the length of the kernel image?

I am trying to disassemble a compound file that consists of several parts, one of which is an uncompressed kernel sandwiched between several other files. I am trying to find the exact length of the ...
4
votes
1answer
770 views

Can the grub2 bootloader replace Windows bootloader partition?

I'm dual-booting Windows and Kali Linux on my laptop, using GRUB 2 as the bootloader. Can I remove the partition Windows 7 creates for the bootloader? It is the 100 MB partition labeled "System ...
4
votes
0answers
358 views

Install Linux on Chromebook with failed TPM module?

I have a Samsung XE303C12 Chromebook which apparently has a failed TPM module. It won't boot into ChromeOS, and when I try to recover the OS, I'm told that an error has occurred. I hit Tab and the ...
4
votes
1answer
82 views

Simple problem, Long read: How to overwrite file residing on ESP at Linux boot

First, foundation. Here is my setup: I have a 64-bit dual-boot system running Windows 7 and Linux Mint 17 Cinnamon. I use rEFInd to graphically choose which system to boot. A little bit about ...
4
votes
1answer
173 views

LVM - failed to install bootloader

I have Mint 16 installed on an LVM system. I originally had 3 logical volumes: lvswap, lvrootone, and lvstorage, with Mint 16 installed on lvrootone. I was hoping to use this scheme to upgrade and try ...
4
votes
1answer
706 views

Manually copying MBR from one drive to the other GPT drive and configuring GRUB results in booting failure

I run CentOS 6.4. I have SSD 300GB for system files and RAID10 8TB for storage + backup. SSD system drive is partitioned as follows: fdisk -l /dev/sdb Disk /dev/sdb: 300.1 GB, 300069052416 bytes 255 ...
3
votes
2answers
824 views

Is it possible for a CentOS system on EC2 to not have a bootloader?

I'm attempting to look for grub: [root /]# find / -iname "*grub*" /sbin/grubby /usr/share/man/man8/grubby.8.gz /usr/share/vim/vim70/syntax/grub.vim /usr/share/vim/vim70/ftplugin/grub.vim ...
3
votes
2answers
322 views

How to query EFI signature

It appears that Grub-EFI will only boot a "signed" Linux kernel. Is there some command that will allow me to query a given kernel image to find out what signatures (if any) are present on it?
3
votes
1answer
3k views

“Missing operating system” error on boot

I replaced Windows 8 with Linux Mint. After the installation had completed, I restarted only to face a black screen with missing operating system. I thought the problem was with Mint so I decided to ...
3
votes
3answers
1k views

reorder GRUB to list Windows on top

I have win 7 and linux mint 14 installed. Is it possible to modify the GRUB Menu to show Windows as the first option instead of Linux, which it currently does. Mainly so that during boot it starts ...
3
votes
2answers
449 views

How does a bootloader and kernel interact after the kernel is loaded in memory?

I'm a little bit confused about the role of bootloader and its interaction with kernel, especially when talking wrt ARM Llnux. Once the Kernel is loaded into RAM, is there any job left for the ...
3
votes
3answers
13k views

CentOS boot time screen resolution

I'm trying to set the screen resolution in /etc/grub.conf using vga= on the kernel line: vga=788 I'm using CentOS 6.4. That command should set the screen resolution to 16bit 800x600 according to ...
3
votes
2answers
7k views

Windows Boot Configuration Data (BCD) viewer for linux

Is there such a thing as a Windows Boot Configuration Data (BCD) viewer for Linux? I understand that BCD files are 'like registry hives' and tools exist to read registry hives for Linux. Is there a ...
3
votes
1answer
1k views

Boot partiotionless disk with syslinux

A file system can be configured to span a complete disk, omitting any partition table. Notice intentionally the command to do so does not use /dev/sda1 but the raw, unpartitioned device instead. ...
3
votes
2answers
3k views

Why is GRUB 2 booting so slowly?

I have a small custom embedded Linux distribution (created with OpenEmbedded), which boots with GRUB 1.99. The aim is to have it start up fast. Currently it says: GRUB loading. for ~2+ seconds ...
3
votes
2answers
303 views

Grub and boot loader

What effect does setting a partition to active still have with common boot loaders. For instance if you install grub on the mbr, do you still need to specify the /boot as active, or does grub just ...
3
votes
1answer
1k views

GRUB File Not Read Correctly

I was installing Gentoo when I ran into problems with the bootloader. Whether I used the automatic or manual installation method, GRUB always threw the following error: The file /boot/grub/stage1 ...
3
votes
1answer
68 views

Dual boot Opensuse13.2 and windows8.1 boot loader

I installed Opensuse13.2 using dual boot on my system that originally had windows 8.1. If I was using UEFI boot option then my computer automatically logged onto the windows OS. So I was using ...
3
votes
2answers
281 views

Easy way initrd to chain loading another kernel with kexec

I have here a machine which won't boot 64-bit kernels (it has efi32 with a little bit of... uncommon firmware). Currently, my only way to boot my 64-bit linux system is: Booting a 32-bit distro ...
3
votes
4answers
3k views

How can I chainload GRUB from syslinux?

Due to the current state of my setup, I want to make Syslinux which is my main bootloader to chainload GRUB2. Google brings up plenty of info on how to chainload Syslinux from GRUB2, but nothing ...
3
votes
1answer
303 views

How can Linux detect automatically if kernel must boot on dev hdc or hda

I have an industrial PC mounting Linux. These PC is delivered in two version, each with slightly different internal board and depending on the board type the disk inside the PC is see as hda or hdc. ...
3
votes
2answers
1k views

Linux on Hard Drive Partition, Bootloader on USB Flash Drive

How can I use a USB flash drive to boot Linux from a partition on (another) hard drive? I'm trying to install Linux on an encrypted partition on the hard drive (using LVM on LUKS). Since /boot must ...
3
votes
2answers
4k views

CentOS grub2 booting iso via loopback

I've got a usb-key setup to multi-boot different Linux images. I'm trying to add CentOS, here's a post with similar entries for grub.cfg set drive_label=multipass01 set isopath=/iso menuentry ...