Backup Hard Disk.

[munyit]

I want to backup my hard disk to another hard disk, how can I do it..?

I know we can make it using dd command, but I don't know how the syntax is.

I want to copy all the thing from my harddisk to another hard disk.

And if possible, including all the setting?

 

Anybody can help me..

 

thank you...

[anyweb]

the syntax is as follows

 

dd if= of=

 

so if you hard discs are

 

/dev/sda

and

/dev/sdb

 

and you wanted to copy the contents of sda to sdb then do as follows

 

Code:

dd if=/dev/sda of =/dev/sdb

 

to find out what your hard discs are do this

 

Code:

fdisk -l

 

it should display something like this

 

[root@www ie7]# fdisk -l 

Disk /dev/hda: 120.0 GB, 120034123776 bytes

255 heads, 63 sectors/track, 14593 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Device Boot Start End Blocks Id System

/dev/hda1 * 1 13 104391 83 Linux

/dev/hda2 14 14593 117113850 8e Linux LVM

 

Disk /dev/hdb: 120.0 GB, 120034123776 bytes

255 heads, 63 sectors/track, 14593 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Device Boot Start End Blocks Id System

/dev/hdb1 * 1 14589 117186111 83 Linux

 

in the above example there are two hdd's one is

 

/dev/hda

 

the other is

 

/dev/hdb

 

cheers

anyweb

[KK Jensen]

the syntax is as follows 

dd if= of=

 

so if you hard discs are

 

/dev/sda

and

/dev/sdb

 

and you wanted to copy the contents of sda to sdb then do as follows

 

Code:

dd if=/dev/sda of =/dev/sdb

<div>


</div>

 

 

I'm trying to do the same. Does dd copy EVERYTHING including partitions etc etc? Would this new drive be bootable (if I were to copy my current undersized, old and slow drive to a newer, bigger one)? I've only seen the dd command used (in other posts and forums) to copy an image to something...this included the partitions.

[anyweb]

yes dd copies everything incluing blank space (byte for byte)

[Tyrannus]

Code:

dd if=/dev/sda of=/dev/sdb

 

/dev/sdb is required to be at least the same size or larger in capacity than /dev/sda in order for dd to work.