10 More Discussions You Might Find Interesting
1. Ubuntu
I have 2 pc's and 1 laptop (all less than a year old) and all 3 have been messed with by super smart but nosy roommate. The bootloader for all three (Gigabyte,Asus and Hp laptop) runs from RAM disk (Paragon software boot it bare metal I think) on a virtual drive that has all the different drivers... (0 Replies)
Discussion started by: kamiz101
0 Replies
2. UNIX for Dummies Questions & Answers
I installed ubuntu on a windows machine, but after restart the computer automatically booted windows without showing me boot option. I think I might have installed my ubuntu bootloader in the wrong partition. I previously have sda1,2,3,5 and 6. I partitioned sda6 into sda6, sda7 and sda8. I... (4 Replies)
Discussion started by: freedombird9
4 Replies
3. Boot Loaders
Here is a list of resources for Unix and GNU/Linux bootloaders:
GRUB Legacy: The original GRand Unified Bootloader. Now known as GRUB Legacy.
GRUB: The latest and greatest. More commonly known as GRUB2.
BRUG: Brand-new Universal loadeR from GRUB. Based on GRUB. Adds features like new object... (0 Replies)
Discussion started by: fpmurphy
0 Replies
4. UNIX for Dummies Questions & Answers
Bootloader problem Grub. Hello,
I have some questions about my Mandriva Linux. My father died last year and so I got automatically forced to use Linux (master computer). I have become a little bit known with it, had to reset the root password via command lines etc. But I... (11 Replies)
Discussion started by: blabla9002
11 Replies
5. Linux
Hello,
I have some questions about my Mandriva Linux. My father died last year and so I got automatically forced to use Linux (master computer). I have become a little bit known with it, had to reset the root password via command lines etc. But I have some problems I can't solve on my own.
In... (0 Replies)
Discussion started by: blabla9002
0 Replies
6. UNIX for Advanced & Expert Users
Hello,
I want to find out the best route for setting up a network bootloader where I can have a custom listing of programmable options. Some of the desired options include:
Setting up a linux or windows system via the network
Troubleshooting utilities (like Knoppix) load via the... (2 Replies)
Discussion started by: ckoeber
2 Replies
7. UNIX for Dummies Questions & Answers
I have installed Fedora 8 in my external harddrive in my laptop( toshiba satellite 1135-S125). During initial installation i installed the bootloader in the MBR of the external harddisk instead of the internal harddisk. the problem is that i donot always turn on the external harddrive;therefore,... (0 Replies)
Discussion started by: sunilryl
0 Replies
8. Red Hat
Hi,
I have Windows XP and RedHat ES both. Last day I format windows due to problems in it, But now the BootLoader that used to come earlier is not coming. My system is directly booting Windows XP. How can I recover RedHat or what I need to do to get back the BootLoader. So that I can use both... (1 Reply)
Discussion started by: somnathbanerjee
1 Replies
9. AIX
hi this is fani working as jr system administration on unix flavours so please help waht bootloader is used in AIX 4.3 ver now LILO is using in AIX 5 help me to find the answer and there configuration file also
tankzz.............. (0 Replies)
Discussion started by: phanifani
0 Replies
10. Solaris
Hi, I'm new to solaris and I have a question about installing solaris 10.
Does solaris during install create a /boot partition?
And if it does, is it possible to set the bootloader on this partition or will it always be on the MBR?
greetz
tony (4 Replies)
Discussion started by: topa
4 Replies
disklabel(4) Kernel Interfaces Manual disklabel(4)
NAME
disklabel - Disk pack label
SYNOPSIS
#include <sys/disklabel.h>
DESCRIPTION
Each disk or disk pack on a system may contain a disk label which provides detailed information about the geometry of the disk and the par-
titions into which the disk is divided. It should be initialized when the disk is formatted, and may be changed later with the disklabel
program. This information is used by the system disk driver and by the bootstrap program to determine how to program the drive and where
to find the file systems on the disk partitions. Additional information is used by the file system in order to use the disk most effi-
ciently and to locate important file system information. The description of each partition contains an identifier for the partition type
(standard file system, swap area, etc.). The file system updates the in-core copy of the label if it contains incomplete information about
the file system.
The label is located in sector number LABELSECTOR of the drive, usually sector 0 (zero) where it may be found without any information about
the disk geometry. It is at an offset LABELOFFSET from the beginning of the sector, to allow room for the initial bootstrap. The disk
sector containing the label is normally made read-only so that it is not accidentally overwritten by pack-to-pack copies or swap opera-
tions; the DIOCWLABEL ioctl, which is done as needed by the disklabel program, allows modification of the label sector.
A copy of the in-core label for a disk can be obtained with the DIOCGDINFO ioctl; this works with a file descriptor for a block or charac-
ter (raw) device for any partition of the disk. The in-core copy of the label is set by the DIOCSDINFO ioctl. The offset of a partition
cannot generally be changed, nor made smaller while it is open. One exception is that any change is allowed if no label was found on the
disk, and the driver was able to construct only a skeletal label without partition information. Finally, the DIOCWDINFO ioctl operation
sets the in-core label and then updates the on-disk label; there must be an existing label on the disk for this operation to succeed.
Thus, the initial label for a disk or disk pack must be installed by writing to the raw disk. All of these operations are normally done
using the disklabel program.
RELATED INFORMATION
Files: disktab(4)
Commands: disklabel(8) delim off
disklabel(4)
