Bootloader issues: what happens before the operating system itself starts.

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5
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1answer
46k views

How can I fix/install/reinstall grub?

So I started out with a 250GB HDD, the stock drive from an EeePC 1015pem that I am trying to turn into a MintBook. The drive is physically operable, but all data has been nuked, including the old OS. ...
11
votes
2answers
12k views

Bash Script on Startup? (Linux)

Is there any way to make/run a bash script on reboot (like in Debian/Ubuntu for instance, since thats what my 2 boxes at home have) Also, any recommended guides for doing cron jobs? I'm completely ...
41
votes
8answers
28k views

SSH to decrypt encrypted LVM during headless server boot?

When I installed Ubuntu 10.04 and, now, 10.10, I was offered the option of enabling "encrypted LVM" for my hard drive. After choosing that option, I am prompted for my password during boot to decrypt ...
10
votes
6answers
20k views

How does a kernel mount the root partition?

My question is with regards to booting a Linux system from a separate /boot partition. If most configuration files are located on a separate / partition, how does the kernel correctly mount it at boot ...
5
votes
3answers
8k views

Can't create a bootable (live) usb flash for arch linux

I created a bootable usb from which I was going to install Arch. I did this the following way: sudo dd if=/path_to_arch_.iso of=/dev/sdX But when I tried to boot from this usb flash, I failed. ...
3
votes
2answers
8k views

Arch Linux not booting after system update

After running a system update pacman -Syu with the testing repo not commented, my computer no longer boots. It shows the udev loading, then shows a black screen with a cursor blinking in upper left. I ...
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vote
2answers
4k views

Run gui application on startup

I can run a script at boot by adding the following line to my crontab: @reboot perl /path/script That works fine. But the problem arises when I try to run a gui application such as gmail notify. It ...
1
vote
1answer
423 views

debian services not running

After an unexpected restart my debian machine is booting up to a terminal screen instead of gui. I'm not sure what to do to diagnose the problem.. but I've noticed that all of the services in /etc/...
37
votes
3answers
107k views

How can I make a script in /etc/init.d start at boot?

I think I read something a while back about this, but I can't remember how it's done. Essentially, I have a service in /etc/init.d which I'd like to start automatically at boot time. I remember it ...
30
votes
5answers
31k views

Why does Linux allow ‘init=/bin/bash’?

I recently found out that if I edit GRUB before booting and I add rw init=/bin/bash I end up with a root shell. Being in a condition that I want to understand everything I would like to know why this ...
13
votes
1answer
2k views

mistakenly deleted /boot folder and rebooted

I mistakenly deleted the /boot folder from my filesystem, rebooted, and all I get now is this: error: file '/boot/grub/i368-pc/linux.mod' not found. grub rescue>
15
votes
1answer
13k views

How can I test the RAM for data corruption on an ARM-based system?

I have an embedded device. It is ARM based, with Linux 2.6.31 and has 256 MB RAM. I wanted to get some ideas/tips on what is the most effective way to test the device RAM for data corruptions. Is ...
14
votes
4answers
4k 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 ...
15
votes
3answers
29k 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?
21
votes
7answers
1k views

Why do most distributions chain UEFI and grub?

Most distributions install a additional boot loader on an UEFI system. UEFI itself is a boot loader, it offers a menu to select different operating systems or individual kernels. Furthermore, the UEFI ...
10
votes
1answer
6k views

Load Linux bzImage in QEMU?

I compiled a Linux by doing make menuconfig then make and now I have compiled the most recent version of Linux. How can I load the kernel into QEMU?
9
votes
1answer
3k views

How can you schedule a computer to boot at a specific time?

Usually BIOSes have an option to schedule a time to which to boot at. Is there a Unix/Linux interface to specify the scheduled boot?
9
votes
3answers
10k views

Does initramfs use /etc/fstab?

The way I understand it, initramfs is responsible for loading the "real" root filesystem. Now, there are two places where we define that root. First we put an entry in /etc/fstab. Second, we put the ...
8
votes
3answers
28k views

How to boot Debian into text mode without using GUI?

How can I boot Debian into text mode? My mouse and keyboard are working in GRUB, but when the login screen appears they don't, so I can't do anything.
3
votes
2answers
452 views

How does Grub Stage1, exactly, access/load stage 2?

This is my first ever question, I have put this question in front of Red Hat Instructors but didn't find any satisfying answers. I'm using RHEL/CENTOS6, GRUB Legacy 0.97, and have consulted heaps of ...
7
votes
1answer
5k views

UEFI install (14.04) boots to GRUB command prompt, no GUI

I just installed zorin 9 core (14.04) on my Hard-Disk in UEFI mode. But, when I boot, all that comes up is a GRUB2 command line. I've searched for solution and came up with this command configfile (...
4
votes
2answers
3k views

Iso booting with grub2

I am using Linux Mint 10, and it is installed on sda8. I edited /etc/grub.d/40_custom: #!/bin/sh echo "Adding 40_custom.">&2 exec tail -n +3 $0 # This file provides an easy way to add custom ...
3
votes
1answer
963 views

Create wireless access point and share internet connection with nmcli

How can I create a Wi-Fi hotspot with command line tool nmcli and share the ethernet internet connection to the wireless access point? Furthermore how can I start this automatically at boot? Is that ...
1
vote
5answers
5k views

I deleted files from my Linux box's /boot directory and now it won't boot [duplicate]

I deleted files from /boot to save space, but now when I boot I see: GRUB loading, please wait ... ERROR 15 /boot still has files corresponding to the 2.6.32-27 version of Linux. But I deleted ...
7
votes
1answer
3k views

after BIOS splash, will not boot, asked to select OS, but can't

I'm running Linux Mint 13 MATE 64-bit. Everything has been working for several weeks. Yesterday, when I tried to boot up my computer, after the BIOS screen flashes I reach a screen with a black ...
4
votes
2answers
270 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 ...
2
votes
3answers
6k views

No matter how many times I try re-installing Linux Mint, I get a GRUB error. How do I fix it?

I have been trying to install Linux Mint 16 Petra using a removable USB thumb drive on my laptop, and after multiple attempts, I get the same error every time: error: file '/boot/grub/i386-pc/normal....
1
vote
1answer
2k views

RHEL Installation issue with UEFI on HP Compaq Desktop

I have bought a new Desktop HP Compaq Elite 8300 SFF. It came with Windows 7 Pro installed. Now I want to install Linux (RHEL) by dual booting it. I have successfully shrinked the partition and ...
1
vote
1answer
975 views

Correct way to delete unnecessary files from /boot directory (Ubuntu)

Currently there is not enough space on by /boot partition/folder and the sofware update can not be performed. Question: how should I correctly free-up some space in that directory? Here is the ...
1
vote
1answer
2k views

Linux Mint: How to enable cryptswap with custom password?

When you want to use hibernation and you care for security, you'd like to have the swap encrypted. But not with the random password, chosen for you at startup, but with a fixed one, supplied by you at ...
1
vote
0answers
1k views

saving file to usb stick while using linux boot stick

I am using the instructions in this youtube video to install CentOS 7 on a new computer that is running Windows 8. The tutorial uses UniversalUSBInstaller from PenDriveLinux, but the installation is ...
1
vote
0answers
254 views

Systemd networking: IPv6 networking not available at boot

I've a Debian machine running multiple static IPv4 and IPv6 addresses managed by systemd itself at /etc/systemd/network/10-static-eth0.network as follows: [Match] Name=eth0 [Network] Address=2a04:---...
17
votes
5answers
28k views

Stop program running at startup in Linux

How do I stop a program running at startup in Linux. I want to remove some apps from startup to allow them to be managed by supervisord e.g apache2
9
votes
1answer
2k views

Relationship of keyboard layout and xmodmap

I'm using Xubuntu. Before login I can choose a keyboard layout. I'm using xmodmap for remapping some keys. I'm interested in two things: How the state of keyboard mapping changes (a) when I turn ...
10
votes
2answers
21k views

How to check on which drives grub2 has actually installed an MBR?

I'm on a Debian/Squeeze system (with a history going back to at least Woody) which was upgraded to grub2 as part of the Squeeze upgrade. All works well, but I'm about to mess with the disk ...
9
votes
1answer
32k views

Booting linux from usb using EFI

I need to use a USB drive as an installation media for my Mint and Ubuntu. For that I have unetbootin to make the usb bootable. But my PC only supports EFI boot (while adding the boot device, I need ...
18
votes
8answers
83k views

How to boot Linux to command-line mode instead of GUI?

I am using 32-bit Red Hat Linux in my VM. I want to boot it to command-line mode, not to GUI mode. I know that from there I can switch to GUI mode using startx command. How do I switch back to command-...
16
votes
2answers
15k views

How to know if I'm booting using UEFI

I was searching, but didn't found an obvious way to know if GRUB is using UEFI in the system boot, or the BIOS compatibility mode or a full fledged BIOS. Only Windows methods. Is there something in ...
10
votes
2answers
19k views

Why do iptables rules disappear when restarting my Debian system?

I add this rule: sudo iptables -t nat -A OUTPUT -d a.b.c.d -p tcp \ --dport 1723 -j DNAT --to-destination a.b.c.d:10000 When restart computer rules are deleted. Why? What I can do to make ...
11
votes
2answers
100k views

How to fix boot into initramfs prompt and “mount: can't read '/etc/fstab': No such file or directory” and “No init found”?

Installing a new system using a GPT partitioned disk dedicated to a single partition, ext4 formatted, extlinux (version 4.05) as bootloader, Ubuntu Core version 13.10 amd64 as rootfs, and Ubuntu linux-...
5
votes
3answers
2k views

Debian 8 KVM Guest - Loading initial ramdisk

I have updated my KVM management script for Ubuntu 14.04 KVM hosts to support debian 8 guests. After a manual installation (preseed script does not work yet), I am stuck with the the following message ...
11
votes
1answer
14k views

How To create a FreeBSD 10 bootable USB?

Currently I am Using Linux Mint 17 and I want to dual boot FreeBSD and Linux Mint 17. How can I create Bootable USB for FreeBSD 10? I tried Unetbootin, Image writer and powerISO but it's not working....
7
votes
2answers
2k 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
1answer
2k views

Silent booting Linux from u-boot

For security reasons I have to boot Linux from u-boot with all output hidden (silently) until a password is entered. I've configured uBoot to do this correctly using the CONFIG_AUTOBOOT_KEYED macro ...
4
votes
2answers
2k views

Can I split /boot to a different partition on a single partition system?

I have set up my system, configured it and everything, using only one partition for / (ext4). So no separate home, boot, swap etc. So the question is: Is there a way to go from this configuration ...
14
votes
2answers
14k views

Why can't I specify my root fs with a UUID?

My system boots OK with this in my GRUB 2 config: linux /bzImage root=/dev/sda2 init=/usr/lib/systemd/systemd ro But if I replace /dev/sda2 with the corresponding UUID: linux /bzImage root=...
13
votes
4answers
11k views

How to get rid of the “scanning for btrfs file systems” at start-up?

After upgrading from Ubuntu 12.04 to Ubuntu 12.10, I get a message "scanning for btrfs file systems" at starting-up. I don't have any BTRFS filesystem. It delays the booting for about 15 seconds. How ...
8
votes
3answers
8k views

No space on device when removing a file under OpenSolaris

While trying to mount a NFS share (exported from an OpenIndiana server) on a client box, the OI server crashed. I got the black screen of death, what looked like a log dump, then the system restated. ...
7
votes
1answer
3k views

Fedora 17 Freezes on Boot

I have been having issues with Fedora 17 not booting after the latest round of updates. I am able to enter the pass for my disk encryption, the boot logo acts normally but after the animation is ...
7
votes
2answers
9k views

How do I add PC BSD / FreeBSD to Grub 2 boot loader?

I have Ubuntu 10.04 installed as my primary operating system, and I installed PC BSD in a different partition: /dev/sda4 without installing it's boot loader. I figured out that I need to edit /etc/...