07-14-2013
Linux Boot Process
Explain Linux Boot Process???
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1. UNIX for Advanced & Expert Users
Hi,
I have a program that check the IP address and automatic update it to the DNS server. I would like to run this program when the computer bootup after pppd get a connection. How do I add it to the init file. Does any one have any information of how to do it.
I run a Linux Mandrake as a... (1 Reply)
Discussion started by: vtran4270
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2. Red Hat
my redhat 9 will not boot. We had a power failure and when the power came back, my redhat linux will not boot.
The machine come up to grub prompt.
I tried the following from grub prompt
root (hd0, then press tab key
partition num:0 filesystem type unknown, partition type 0x83... (7 Replies)
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3. UNIX for Advanced & Expert Users
I have COMPAQ DS 20 SERVER, During The Boot Process, There is an ERROR MESSAGE :
malloc_mem_alloc : no space in map.
AND the system can't boot , And i can't do anything.
The server display : malloc_mem_alloc and the unique thing i can di is to restart the server with i/o buttom.
HELP ME... (1 Reply)
Discussion started by: kamel267
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4. Solaris
I want to configure one service to come up as a normal strat-up process after reboot, instead of starting it manually.
I tried to configure it in inetd.conf but it didn't work.
Could you please suggest, how I can achieve this ?? (3 Replies)
Discussion started by: pankajwagh81
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5. AIX
To All:
I have this AIX machine (see boot process below). The problem was it hangs at:
The ctrmc Subsystem has been started. Subsystem PID is 11906..
I checked with other forums but their advise were just "strong punches in the air" with no specific explanation.
I really appreciate if... (6 Replies)
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6. Linux
Hi Everybody,
I would like to know the entire network packets exchange, sequence between a linux dhcp client workstation & dhcp server as client comes up starting from OS booting stage as network service starts to the time client gets dhcp IP address. This would be in a typical LAN ... (2 Replies)
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7. UNIX for Advanced & Expert Users
Hey guys,
I am working on a security module which checks signatures of binarys/shared libs. The Linux security framework (and thus my module) gets loaded early in the bootprocess.
Right now all my module does is - whenever a binary gets mmap'ed for execution - print out a message using printk()... (1 Reply)
Discussion started by: disaster
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8. Red Hat
Hello,
Sometime i see that the boot process hangs.
I am using rhel 6.2.
At that time in the console i see
Probing EDD (edd=off to disable)...
SSH service seems to be started but i can't login...
ssh logs (last lines) in verbose mode level 3:
debug2: we did not send a packet,... (3 Replies)
Discussion started by: @dagio
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9. Solaris
I understand the OBP program looks for the boot-device, loads the bootblk (located on physical disk sectors 1 through 15). Then the secondary boot program, /platform/`arch -k`/ufsboot is run. This program loads the kernel core image files (genunix and unix).
So how does it uses the ufsboot and... (1 Reply)
Discussion started by: MR.bean
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LEARN ABOUT DEBIAN
mkimage
MKIMAGE(1) General Commands Manual MKIMAGE(1)
NAME
mkimage - Generate image for U-Boot
SYNOPSIS
mkimage [options]
DESCRIPTION
The mkimage command is used to create images for use with the U-Boot boot loader. These images can contain the linux kernel, device tree
blob, root file system image, firmware images etc., either separate or combined.
mkimage supports two different formats:
The old legacy image format concatenates the individual parts (for example, kernel image, device tree blob and ramdisk image) and adds a 64
bytes header containing information about target architecture, operating system, image type, compression method, entry points, time stamp,
checksums, etc.
The new FIT (Flattened Image Tree) format allows for more flexibility in handling images of various types and also enhances integrity pro-
tection of images with stronger checksums.
OPTIONS
List image information:
-l [uimage file name]
mkimage lists the information contained in the header of an existing U-Boot image.
Create old legacy image:
-A [architecture]
Set architecture. Pass -h as the architecture to see the list of supported architectures.
-O [os]
Set operating system. bootm command of u-boot changes boot method by os type. Pass -h as the OS to see the list of supported OS.
-T [image type]
Set image type. Pass -h as the image to see the list of supported image type.
-C [compression type]
Set compression type. Pass -h as the compression to see the list of supported compression type.
-a [load addess]
Set load address with a hex number.
-e [entry point]
Set entry point with a hex number.
-n [image name]
Set image name to 'image name'.
-d [image data file]
Use image data from 'image data file'.
-x Set XIP (execute in place) flag.
Create FIT image:
-D [dtc options]
Provide special options to the device tree compiler that is used to create the image.
-f [image tree source file]
Image tree source file that describes the structure and contents of the FIT image.
EXAMPLES
List image information:
mkimage -l uImage
Create legacy image with compressed PowerPC Linux kernel:
mkimage -A powerpc -O linux -T kernel -C gzip
-a 0 -e 0 -n Linux -d vmlinux.gz uImage
Create FIT image with compressed PowerPC Linux kernel:
mkimage -f kernel.its kernel.itb
HOMEPAGE
http://www.denx.de/wiki/U-Boot/WebHome
AUTHOR
This manual page was written by Nobuhiro Iwamatsu <iwamatsu@nigauri.org> and Wolfgang Denk <wd@denx.de>
2010-05-16 MKIMAGE(1)