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

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What changes my boot partition and how to prevent it?

As an another countermeasure against security threats I wrote a little script that computes MBR and boot checksum and then compare it to the old one. As long as the computer is running this is OK, but ...
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1answer
17 views

Partitioning first Debian box [on hold]

So I've decided to install Debian on my local storage, since I've played with it enough on persistence. It's gonna be for casual use, basically moving all the stuff over from Win, except what doesn't ...
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0answers
20 views

Unpacking of initramfs is very slow

I am trying to improve the kernel boot time of my device and I would like some help. I am using OMAPL138 with kernel version 2.6.37 and it takes about 50 seconds until the boot process is finished, ...
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2answers
37 views

Set default kernel in GRUB

How can I pick which kernel GRUB2 should load by default? I recently installed a the linux realtime kernel and now it loads by default. I'd like to load the regular one by default. So far I only ...
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2answers
38 views

Grub-install: what's the root directory

Can anyone provide a clear explanation what the root directory is for grub-install and when to use it?
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0answers
27 views

what exactly is present in CMOS when system is turned on for first time? [closed]

also how does cmos gets all the hardware information, parameters and stores them? Does Bios writes them into CMOS or some other hardware? Bios has facility to do POST. Is this POST anyhow related to ...
1
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1answer
42 views

Is vmlinuz and bzImage really the same?

I just stumbled upon this page, which says that bzImage and vmlinuz are identical. bzImage is then copied using the cp (i.e., copy) command to the /boot directory and simultaneously renamed ...
2
votes
1answer
23 views

Grub-install: device vs partition

Grub can be installed to a device (grub-install /dev/sda) and to a certain partition (grub-install /dev/sda1) - as I understood. My question - if we install it to a partition will grub-installer write ...
2
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0answers
41 views

Fedora installation breaks UEFI boot

I am having problems installing Fedora 21/22-alpha on brand new system and I am new to the EFI thing so I am running into issues. I installed Win7, booted in UEFI, installed in UEFI, at least I see an ...
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0answers
26 views

Centos 6.6 unrecognized services during boot rsyslogd / iscsid / iscsi / mcstrans / syslog / yum-updatesd / rhnsd

Could anyone explain what is going on here, the server used to boot fine without errors and now all of a sudden services cannot be found anymore? When researching any of these errors I get no ...
1
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1answer
17 views

need a detailed guide to start scripts and applications in xfce4

I am looking for a detailed explanation about where is the right place to start scripts applications during the boot process. It seems there is either confusion or not need for the detail I am looking ...
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0answers
18 views

Can't see boot options or log with GRUB through serial-over-lan

I have a Debian system that is unable to boot a configuration I want. I don't have physical access to it, but I have serial-over-LAN access via Dell's BMC (so very limited), IPMI 1.5/isol. When I boot ...
2
votes
1answer
23 views

How do I find/change where GRUB 2 gets installed on a rewrite, on Debian Wheezy?

I have a Debian Wheezy system. On a recent upgrade, I got an error message from GRUB telling me that embedding was not supported for ext2 file systems (huh? Never seen that one before.) and after a ...
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2answers
47 views

Problem before Login Screen - Fedora 21

Have the following problem: Computer boots till the fedora logo before login. when I press F2, I see the following: (1 of 3) A start job is running for Gnome Display Manager (2 of 3) A start job is ...
0
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1answer
12 views

run a script from rc.local, that exists on an autofs nfs share

I mount some nfs exports from a fileserver to my workstation. The workstation is ubuntustudio 64bit 14.04. in order to make the mounts as transparent as possible, I have inserted the following in my ...
4
votes
1answer
41 views

Ubuntu 14 server edition, how to boot into single-user mode?

I'm new in Linux and just have basic knowledge about it. In the past I've tested to boot into single-user mode in some Linux distribution by just append " single" to the boot command. However, I don't ...
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0answers
21 views

What are the [internal] steps involved in making USB drive 'bootable'?

Whenever I have to install a new Linux distro, I create a bootable USB from the distro image using some specialized program like UNetBootin. Recently, I tried to do for Fedora using 'dd' command, but ...
1
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1answer
38 views

Half Solved | Grub error: unknown filesystem. (all partitions are unknown)

So, there are thousands of questions related to this all over the internet, but, after days of searching, I still can't find a solution! I have a Turnkey server that was pre-configured with MineOS, ...
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0answers
30 views

How to prepare an external disk for dual-booting, using Linux [closed]

I'm running Lubuntu 14.04.1 on a Toshiba Satellite L505. I've completely erased Windows from it and this is the only OS on the machine. I did this a few days ago and am pretty new to Linux (but I'm ...
0
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1answer
25 views

In Elemenary os, grub wont load anything but itself

I am running Elementary OS Freya as the only currently installed OS on my laptop, I have tried to install various operating system via USB and UNetbootin, however my grub for some reason just will not ...
0
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0answers
6 views

How to add grub 2 to syslinux

I'm trying to add grub 2 to syslinux (isolinux.cfg), but the problem is that I only could add an entry to grub4dos (not grub2). I don't know even how to get grub2 to the disk so I can refer to it.. ...
2
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2answers
30 views

Broke permissions on /bin, /boot, and /dev; how to clean the mess?

I just made a terrible mistake, I tried to fix it by myself but I need some help. Due to a syntax error all files and folders permissions were being changed: thankfully I saw this while it was ...
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0answers
12 views

Plugged mouse increases boot time

I was going through the output of dmesg -e and found that my logitech mouse is increasing boot time by around 7 seconds and my total boot time is around 45 seconds. [ +7.334661] usb 1-1: new ...
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0answers
33 views

error: cant't find command linux when booting system

I need some help with a problem when booting. Recently I've installed CentOS 7 on my pc, previously I had debian 7 and manjaro installed. When I installed manjaro I overwrote the bootloader of debian ...
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0answers
11 views

Installed Windows 8.1 not Booting from Internal HDD

I have Windows 8.1 and Linux installed on my internal HDD. Windows is installed first, it worked fine and later I installed Linux through live USB stick. After restarting nothing happened...my ...
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0answers
6 views

X11 hangs, leaves me with black&white text display, Intel i915, precise1-Ubuntu

I am running a Bodhi derivative Ubuntu, ("tainted") based on Precise, on an Acer Chromebook. After a system update, X11 dies, leaves me "hung" with text display. If I reboot in recovery mode, and ...
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0answers
23 views

Manjaro boots incredibly slow; Nouveau problem

I've got a problem with my fresh Manjaro install. It's installed on a new computer on SSD, yet it boots incredibly slow. As far as I can tell it may be related to graphics drivers. I've installed ...
0
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0answers
11 views

live-build strange symbols during boot

So I'm booting up my Debian live-build through QEemu and gets this strange symbols. Anyone know what it is?
1
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1answer
19 views

How to setup boot scripts to save orphan inodes after improper shutdown?

after abnormal shutdown in dmesg I have [ 16.107445] EXT4-fs (dm-1): INFO: recovery required on readonly filesystem [ 16.107450] EXT4-fs (dm-1): write access will be enabled during recovery [ ...
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2answers
39 views

Systemd dependency tree saving

As I know systemd stores dependencies between services in unit files. I need to know how systemd behaves on boot: Does it load unit files from specific paths and recalculate dependencies every time ...
3
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2answers
552 views

What is the purpose of UEFI partition?

On old computers (using BIOS) we had to create 2 partitions, one to mount / and second for swap. But on new systems with UEFI we need to create third partition EFI System in addition to those two ...
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0answers
10 views

Is it possible to boot a pxe client to hard disk image

I bought a banana pi device recently. While I checking out for OS to this device, I saw a lot of OS images on it's web site. Also there are third party OSes available. I decided to try all but writing ...
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0answers
16 views

Which partition should I use for /boot to dual boot with Windows 8

The distro was Antergos Linux. Last time I tried to install to the EFI system partition (the one Windows uses), but when I rebooted after finishing install, the booting process when straight to ...
0
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2answers
47 views

boot from usb flash drive

I have a Sony Vaio SV-E14A2M1E with Win 8.1; and I just created a bootable USB with Linux mint 17.1, but I can't boot from it. I've done a bit of research, but I'm not sure with what I've found.
2
votes
1answer
62 views

How do I fix an “unknown chipset” error when booting Arch Linux?

I have a laptop with this hardware: intel i5 nvidia 820m graphics card 64bit system with uefi boot I burned the Arch Linux ISO to USB, and I am getting the option to choose Arch on booting the ...
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0answers
20 views

how can i assemble my components (kernel, initramfs, rootfs) into a single bootable image?

I have created a compressed rootfs, kernel, and initramfs. I have a syslinux configuration that boots my rootfs/kernel to RAM. It works. However, I'd like to have something like image1 which ...
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votes
1answer
83 views

enabling Intel Iris Pro (syslinux, Tails system, Macbook Pro 15 Retina Late 2013, IGP/GPU)

Macbook Pro 15 Retina Late 2013 uses explicitly dedicated GPU. Integrated graphic processor isn't listed at all. Not being able to switch or turn off discrete card to improve battery life. ...
4
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0answers
59 views

How do I boot the linux kernel over PXE with dnsmasq and syslinux?

Are these dnsmasq.conf options fine: port=0 interface=enp0s20u2u1 bind-interfaces dhcp-range=192.168.2.50,192.168.2.220,12h dhcp-boot=boot/syslinux/lpxelinux.0 ...
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0answers
33 views

Convert BIOS booting to UEFI in existed linux installation

I have debian installed on HDD with GPT partition table. But it installed with BIOS compatible mode. Now I want to boot it from native UEFI. How can I do this? Ofcource I have motherboard with UEFI.
0
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1answer
53 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 ...
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0answers
25 views

Keyboard merely plugged in greatly increases kernel boot time

Specs are here. I am using a K65 RGB. I am using the ckb-git package from the AUR to provide basic input functionality. With Keyboard and with driver: Startup finished in 3.100s (firmware) + ...
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0answers
86 views

Jessie: can't boot the kernel 3.16.0-4-amd64

I have been using Jessie for a few months now, and I had a problem booting my computer a few weeks ago. I had this error on boot: early console in decompress_kernel Decompressing Linux... Parsing ...
0
votes
1answer
50 views

Laptop boots directly to Ubuntu, can't access BIOS or Boot menu anymore

I'm running Laptop with single OS: UbuntuMATE 15.04 Beta1 64bit on Toshiba laptop Core i3. After burning "Elementary OS" on a live USB drive using UNetbootin, what happened is: -After reboot, laptop ...
1
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1answer
255 views

elementary OS Freya won't boot

I have been doing Linux since last June and I have found my way around it pretty well. But I have been trying to boot elementary OS Freya beta 2 to my windows 8 UEFI laptop, I have tried using ...
0
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1answer
32 views

Convert Grub2 entry to Syslinux

I have been trying to do it for hours now, but so far I was unable to. I have a USB stick with grub4dos on sda1 (vfat), /boot syslinux on sda3 (ext2) and root on sda2 (btrfs). ext2 with syslinux is ...
2
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1answer
57 views

Where can I find a list of USB error codes?

Every time I boot Debian, the boot log shows a bunch of xhci_hcd problems, and messages like usb 3-13: hub failed to enable device, error -22 usb 3-13: device descriptor read/8, error -61 I'm ...
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1answer
39 views

Is it possible to add some 'PXE Network Boot' option to GRUB?

This is an example of my available GRUB menu boot options: 1 menu label ^ 1) Xubuntu 14.04.02 LTS 2 menu label ^ 2) Windows 7, x86 & AMD64 3 menu label ^ 3) Windows 8, ...
3
votes
1answer
71 views

Quick boot for desktop Linux?

What can be done to a "normal" (Linux Mint, not micro or embedded) distribution in order to boot "nearly immediately" as seen for instance here? What magic is that, and why doesn't every distro have ...
2
votes
1answer
70 views

Raspbian boots to a root@(none) prompt after erroneous changes in /etc

Under a Raspbian 3.18.7 ARMV71 GNU/Linux embedded inside a cute Raspberry Pi B 2, when configuring some 'silent' options under /etc/init.d files with a now evidently broken and stupid file, the ...
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1answer
66 views

What is the issue due to which debian hangs at fsck /dev/sda? What is the solution?

What is the issue due to which debian hangs at fsck /dev/sda? What is the solution? This is the screenshot of Debian in normal mode: This is the screenshot of Debian in recovery mode: