How Do I Make Linux / UNIX Filesystem Backup With dd? last updated November 16, 2005 in Categories Backup, CentOS, Data recovery, Debian Linux, fedora linux, File system, FreeBSD, Hardware, Howto, HP-UX, Linux, OpenBSD, RedHat/Fedora Linux, Security, Sys admin, Tips, Ubuntu LinuxExplains how to make a backup (track by track) using dd command under UNIX / Linux operating system.