I'm having trouble finding info on how to convert sector size (*if that's really what i want to do?) to something easier to understand.
I'm trying to copy the MBR from a bootable SD Card to another SD Card or image file, but I'm not sure what I should use in my dd command since I'm not positive about how much space is exactly before the 1st partition...
fdisk Output:
I read on a site that you can just divide the "Start" number in half to get Kilobytes (*which means there is 1MB before the 1st partition), but I'm not positive if that is accurate or not..?
What should I use as my dd command if I want everything BEFORE the first start'ing sector at 2048 (*i.e. before the 1st partition)?
Something like this?
If any has any thoughts or suggestions it would be much appreciated.
first of all, sorry about my english...I´m a spanish newbie to this marvelous OS and i have just a couple of doubts...u know? :-)
1) how big should my swap partition be if i installed debian 2.2r3 or FreeBSD 4.x on a AMD k7 1400Mhz with 512Mb of Random Access Memory?
i heard that those OS... (1 Reply)
Hello,
I am trying to monitor disk space for each node on the machine. I am able to get all individual nodes but for the '/' node. For example:
df -k:
bash-2.05b# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/xxx 4127108 2415340 1502120 62% /
/dev/yyy ... (3 Replies)
Hi,
On one of our solaris servers, the root partition has filled up,(it was poorly sized in the first place), Does anyone have any advice about the best way to add space to a partition. I'm sure I've read how to do this somewhere before but just can't remember...:(
A colleague has suggested... (1 Reply)
Dear Friends ,
I am using Redhat Ent Linux 5.0 with a EMC storage which HDD space is 4 TB. After Installing RHEL 5 , I get 4 TB space available but when I am going to create a partition then the OS show 2TB available space . I cannot create a partition above 2TB space . Is there any limitation... (3 Replies)
hi
My System is Sun Microsystems Inc. SunOS 5.10 Solaris
Partition Info is
/dev/vx/dsk/bootdg/var
27G 25G 1.2G 96% /var
/dev/vx/dsk/bootdg/oravol
110G 54G 56G 49% /export/home
I want to shift space 20G from /export/home to /var
What should be the command ?? (2 Replies)
I am planning to install slack 13.37 on an old stand-alone PIII (512 mb ram) with 17 gb disk space. I need to keep lotsa pdf, chm type e-books for programming with few other misc. documents.
I'm going to use this system for my personal use.
It has no network but I browse internet with cable... (0 Replies)
Hi OS Experts
I would like to increase root partition from another partition so that I can save more documents in Home and Desktop. whether it is possible without formating root partition if so please explain
here is o/p of df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda9... (8 Replies)
Hi
I'm doing some resilience testing and need to write a script to consume all of the available disk space on a partition and then to free it up again.
This would need to be -
Safe
Dynamic, in that it calculates the free space prior to consuming it.
I might want to go on to consume a... (7 Replies)
I have a RHEL 5.3 machine with the following partitions and free space:
Free space on the partitions
/ : 74GB
/boot : 81MB
/var : 73GB
/home : 37GB
/icat : 758MB
/opt : 1.5GB
Now is it possible to allot a free space of some other partitions to /opt? I want around 100 GB more space... (4 Replies)
Discussion started by: omniok
4 Replies
LEARN ABOUT LINUX
blockdev
BLOCKDEV(8) System Manager's Manual BLOCKDEV(8)NAME
blockdev - call block device ioctls from the command line
SYNOPSIS
blockdev [-q] [-v] command [command...] device [device...]
blockdev --report [device...]
DESCRIPTION
The utility blockdev allows one to call block device ioctls from the command line.
OPTIONS -V Print version and exit.
-q Be quiet.
-v Be verbose.
--report
Print a report for the specified device. It is possible to give multiple devices. If none is given, all devices which appear in
/proc/partitions are shown. Note that the partition StartSec is in 512-byte sectors.
COMMANDS
It is possible to give multiple devices and multiple commands.
--flushbufs
Flush buffers.
--getalignoff
Get alignment offset.
--getbsz
Print blocksize in bytes.
--getdiscardzeroes
Get discard zeroes support status.
--getfra
Get filesystem readahead in 512-byte sectors.
--getiomin
Get minimum I/O size.
--getioopt
Get optimal I/O size.
--getmaxsect
Get max sectors per request
--getpbsz
Get physical block (sector) size.
--getra
Print readahead (in 512-byte sectors).
--getro
Get read-only. Print 1 if the device is read-only, 0 otherwise.
--getsize64
Print device size in bytes.
--getsize
Print device size (32-bit!) in sectors. Deprecated in favor of the --getsz option.
--getss
Print sectorsize in bytes - usually 512.
--getsz
Get size in 512-byte sectors.
--rereadpt
Reread partition table
--setbsz bytes
Set blocksize.
--setfra sectors
Set filesystem readahead (same like --setra on 2.6 kernels).
--setra sectors
Set readahead (in 512-byte sectors).
--setro
Set read-only.
--setrw
Set read-write.
AUTHOR
blockdev was written by Andries E. Brouwer and rewritten by Karel Zak.
AVAILABILITY
The blockdev command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
Aug 2010 BLOCKDEV(8)