how to make a copy of linux harddisk to another harddisk dito copy

[omerfarooq]

hi there   can any one tell me how to make a copy of linux harddisk to another harddisk dito copy. like how we are making it in windows enviroment that just plug the other hdd and from windows copy and paste all the files to the other hdd. even it will copy the system files. how can we do that in LINUX........     --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.417 / Virus Database: 233 - Release Date: 11/8/02