Please provide OS information first. Commands and options for fdisk utility varies from OS to OS. Here's what I would do on a RHEL system to create 30MB partition!
Code:
[root@testserv-sl6 ~]# fdisk /dev/sdb
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): p
Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00092e03
Device Boot Start End Blocks Id System
/dev/sdb1 1 244 1953125 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdb2 244 487 1952768 83 Linux
Partition 2 does not end on cylinder boundary.
/dev/sdb3 487 730 1952768 83 Linux
Partition 3 does not end on cylinder boundary.
/dev/sdb4 730 1045 2529280 83 Linux
Command (m for help): d
Partition number (1-4): 1
Command (m for help): d
Partition number (1-4): 2
Command (m for help): d
Partition number (1-4): 3
Command (m for help): d
Selected partition 4
Command (m for help): p
Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00092e03
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1044, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-1044, default 1044): +30M
Command (m for help): p
Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00092e03
Device Boot Start End Blocks Id System
/dev/sdb1 1 5 40131 5 Primary
Command (m for help): w
Dear Members,
I am using SCO-Unix 5.0.5. I have created 2 logical drives but some of the blocks are overlapped and are now giving warning during startup. I have used fsck to settle the problems but to no avail. Kindly help me to sort out the problem.
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zfs set mountpoint=/earth earthpool/earth.
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I have 40GB HD with mepis8, swap, MBR and under flags word boot.
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How to create a .tar file in windows OS..
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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)
I have a drive full of diagnostic images (ASD), and I also use it for storage, installers, etc. When I plug it in to a booted system, it has to mount every single volume (about 25) which can take some time. I would like to keep all the ASD partitions from mounting when plugged in/at boot. I know... (0 Replies)
Hi,
I have a server booted into sysresccd (mini-linux OS) with 1 40 GB disk attached
I am trying to create a volume group and restore another server into the new one
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These are the... (2 Replies)
Hi all,
I am using SPARC Solaris 11.1 with EFI labelled disks.
I am new to ZFS file systems and slightly stuck when trying to create a partition (slice) on one of my LUNs.
EFI labels use sectors and blocks and I am not sure how exactly it works.
From here I can try and create a... (2 Replies)
Hello, I have an input that is unformatted text, such as below.
INPUT:
Hola. Me llamo Davíd y soy de Andalucía. Mi color favorito es rojo. ¿Como te llamas? ¿Cuál es tu color favorito?
I want to take each word and punctuation and place it on its own line, with a space in between each individual... (1 Reply)
Discussion started by: owwow14
1 Replies
LEARN ABOUT FREEBSD
disktab
DISKTAB(5) BSD File Formats Manual DISKTAB(5)NAME
disktab -- disk description file
SYNOPSIS
#include <disklabel.h>
DESCRIPTION
Disktab is a simple database which describes disk geometries and disk partition characteristics. It is used to initialize the disk label on
the disk. The format is patterned after the termcap(5) terminal data base. Entries in disktab consist of a number of `:'-separated fields.
The first field for each entry gives the names by which a disk's entry may be selected, separated by `|' characters. The last name given
should be a long name fully identifying the disk.
The optional fields for each entry are:
ID Type Description
ty str Type of disk (e.g. removable, winchester)
dt str Type of controller (e.g. SMD, ESDI, floppy)
ns num Number of sectors per track
nt num Number of tracks per cylinder
nc num Total number of cylinders on the disk
sc num Number of sectors per cylinder, ns*nt default
su num Number of sectors per unit, sc*nc default
se num Sector size in bytes, DEV_BSIZE default
sf bool Controller supports bad144-style bad sector forwarding
rm num Rotation speed, rpm, 3600 default
sk num Sector skew per track, default 0
cs num Sector skew per cylinder, default 0
hs num Headswitch time, usec, default 0
ts num One-cylinder seek time, usec, default 0
il num Sector interleave (n:1), 1 default
d[0-4] num Drive-type-dependent parameters
bs num Boot block size, default BBSIZE
sb num Superblock size, default 0
ba num Block size for partition `a' (bytes)
bd num Block size for partition `d' (bytes)
be num Block size for partition `e' (bytes)
bf num Block size for partition `f' (bytes)
bg num Block size for partition `g' (bytes)
bh num Block size for partition `h' (bytes)
fa num Fragment size for partition `a' (bytes)
fd num Fragment size for partition `d' (bytes)
fe num Fragment size for partition `e' (bytes)
ff num Fragment size for partition `f' (bytes)
fg num Fragment size for partition `g' (bytes)
fh num Fragment size for partition `h' (bytes)
oa num Offset of partition `a' in sectors
ob num Offset of partition `b' in sectors
oc num Offset of partition `c' in sectors
od num Offset of partition `d' in sectors
oe num Offset of partition `e' in sectors
of num Offset of partition `f' in sectors
og num Offset of partition `g' in sectors
oh num Offset of partition `h' in sectors
pa num Size of partition `a' in sectors
pb num Size of partition `b' in sectors
pc num Size of partition `c' in sectors
pd num Size of partition `d' in sectors
pe num Size of partition `e' in sectors
pf num Size of partition `f' in sectors
pg num Size of partition `g' in sectors
ph num Size of partition `h' in sectors
ta str Partition type of partition `a' (4.2BSD file system, swap, etc)
tb str Partition type of partition `b'
tc str Partition type of partition `c'
td str Partition type of partition `d'
te str Partition type of partition `e'
tf str Partition type of partition `f'
tg str Partition type of partition `g'
th str Partition type of partition `h'
FILES
/etc/disktab
SEE ALSO getdiskbyname(3), bsdlabel(8), newfs(8)HISTORY
The disktab description file appeared in 4.2BSD.
BSD October 14, 2006 BSD
10-30-2011
