Are you running UFS? and if you are do you have a list of alternate superblocks? This list is output when the filesystem is first created. If you do, you can run the command
Block 32 is always an alternate superblock.
Also, if the mkfs/newfs command was run with default options, it will create alternate superblocks in the same disk blocks. So, you can create a new filesystem on a UAT/Dev system and see the list of superblocks that is shown and maybe use a block number listed there.
I'm using PartitionMagic's wizard to partition my drive for Linux, and after I get past the first step it asks if I want to screate a seperate Linux Swap Partition. What is a Linux Swap Partition and is something I need/should have? (10 Replies)
Hello everyone.
I am new to Linux so hope some one could help me here.
I have a 30 Gb HD and windows Xp is my O/S, HD is not partitioned,but I want to Partitioned it, so I could Install Knoppix(Linux)on one of the partitioned one, how could I do this? OR should I erase every thing and then... (1 Reply)
I've created a partition with GNU Parted, how do I mount the partition?
The manual information at http://www.gnu.org/software/parted/manual/parted.html is good, but I am sure about how I mount the partition afterwards.
Thanks,
--Todd (1 Reply)
Dear all,
I have a AIX server with logical 3 partitions and the server is connecting a tape drive. the first partition can successfully making a system backup to the tape but how can i fail to mount the tape to second and thrid partition. would anyone can help me to deal with it? what command... (3 Replies)
Solaris 10 5/08 on Ultra 40 M2
It boots fine off primary disk but having issues booting off the mirror disk.
I get this error when booting off mirror disk:
Booting 'Solaris 10 ... Mirror disk'
root (hd1,0,a)
Error 22: No such partition
Press any key to continue...
Any... (7 Replies)
Hi ,
I have a Mac OS X Lion mac book pro. I have a hard drive which I have partitioned in two
(a) OSX Partition - Mac OS Extended Journaled format. Mount point: /
(b) Data Partition - Windows NT Filesystem format. Mount point: /Volumes/Data
I need to access the NTFS partition (I have a... (6 Replies)
hi all
while formatting hard disk i am getting following error.
Partition 1 ends at 266338338
It must be between 34 and 143374704.
label error: EFI Labels do not support overlapping partitions
Partition 8 overlaps partition 1.
Warning: error writing EFI.
Label failed.
I have formatted the... (2 Replies)
Hi all,
I've been working on a script to run a disk wipe (using Jim Garlick's scrub tool) on the filesystem in Xerox production printer RIPs.
Easy enough if there's just one partition, but I need to cater for the possibility of multiple drives/partitions, and either ZFS or UFS (don't know if... (2 Replies)
Hello All,
I have a Red Hat Linux 5.9 Server installed with one hard disk & 2 Partitions created on it as follows,
/boot - Linux Partition & another is
LVM - One VG & under that 5-6 Logical volumes(var,opt,home etc).
Here my requirement is to take out 1GB of space from LVM ( Any logical... (5 Replies)
Discussion started by: gr8_usk
5 Replies
LEARN ABOUT REDHAT
sd
SD(4) Linux Programmer's Manual SD(4)NAME
sd - Driver for SCSI Disk Drives
SYNOPSIS
#include <linux/hdreg.h> /* for HDIO_GETGEO */ #include <linux/fs.h> /* for BLKGETSIZE and BLKRRPART */
CONFIG
The block device name has the following form: sdlp, where l is a letter denoting the physical drive, and p is a number denoting the parti-
tion on that physical drive. Often, the partition number, p, will be left off when the device corresponds to the whole drive.
SCSI disks have a major device number of 8, and a minor device number of the form (16 * drive_number) + partition_number, where drive_num-
ber is the number of the physical drive in order of detection, and partition_number is as follows:
partition 0 is the whole drive
partitions 1-4 are the DOS "primary" partitions
partitions 5-8 are the DOS "extended" (or "logical") partitions
For example, /dev/sda will have major 8, minor 0, and will refer to all of the first SCSI drive in the system; and /dev/sdb3 will have
major 8, minor 19, and will refer to the third DOS "primary" partition on the second SCSI drive in the system.
At this time, only block devices are provided. Raw devices have not yet been implemented.
DESCRIPTION
The following ioctls are provided:
HDIO_GETGEO
Returns the BIOS disk parameters in the following structure:
struct hd_geometry {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
A pointer to this structure is passed as the ioctl(2) parameter.
The information returned in the parameter is the disk geometry of the drive as understood by DOS! This geometry is not the physical
geometry of the drive. It is used when constructing the drive's partition table, however, and is needed for convenient operation of
fdisk(1), efdisk(1), and lilo(1). If the geometry information is not available, zero will be returned for all of the parameters.
BLKGETSIZE
Returns the device size in sectors. The ioctl(2) parameter should be a pointer to a long.
BLKRRPART
Forces a re-read of the SCSI disk partition tables. No parameter is needed.
The scsi(4) ioctls are also supported. If the ioctl(2) parameter is required, and it is NULL, then ioctl() will return -EINVAL.
FILES
/dev/sd[a-h]: the whole device
/dev/sd[a-h][0-8]: individual block partitions
SEE ALSO scsi(4)
1992-12-17 SD(4)