dd command

How do I create 1 GB or 10 GB image file instantly with dd command under UNIX / Linux / BSD operating systems using a shell prompt?


Q. One of my responsibilities is backing up UNIX server. How do I backup data under HP-UX UNIX? How do I use mt, fbackup and frecover commands to perform full and incremental backups?


Q. I’ve Debian Linux 4.0 Install on HP Server. This server has SCSI tape device. According to my tape documentation size should be 64k. How can I set the block size for a HP SCSI tape device?


Q. I’m using CentOS Linux and I’d like to create bootable Linux CD for the same. How do I create an installation boot disk? A. You need to find images/ directory located on CentOS / Fedora / RHEL or any other Linux distribution. This directory contains image files that can be used to create media […]


Q. How can I copy one hard disk to another using dd command? A. dd command can copy disk in raw format. It will copy partition table and bootloader and all partitions within this disk. For example, you can copy /dev/sda to /dev/sdb (same size) using the following dd command. dd should complete with no […]


How do I copy MBR from one hard disk to another hard disk under Debian Linux?


Q. How do I uninstall GRUB? I need to uninstall everything before sending this hard disk to someone including GRUB. All I need to keep is windows XP. A. GNU GRUB (“GRUB” for short) is a boot loader package from the GNU Project. GRUB is the reference implementation of the Multiboot Specification, which allows a […]