How do I remove all partitions, data and create clean empty hard disk under Linux operating systems?
The simplest command to remove everything from Linux hard drive is as follows. Please note that this will remove all data so be careful:
Step #2 : Boot from CD.
Step #3: How do I use shred command?
Shred originally designed to delete file securely. It deletes a file securely, first overwriting it to hide its contents. However same can be used to erase hard disk. For example your hard disk name is /dev/sda (SCSI hard disk) then type following command:
Where,
Other options or Live CDs
Darik's Boot and Nuke CD is highly recommended for permanently erasing hard disk
Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy (CD ISO also available) that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.
The simplest command to remove everything from Linux hard drive is as follows. Please note that this will remove all data so be careful:
dd if=/dev/zero of=/dev/hdX bs=512 count=1OR for sata disk, use the following syntax:
dd if=/dev/zero of=/dev/sdX bs=512 count=1In this example, empty sata disk /dev/sdb, enter (you must be login as the root user):
fdisk /dev/sdb dd if=/dev/zero of=/dev/sdb bs=512 count=1 fdisk -l /dev/sdb
Securely Wipe Hard Disk
You can use the shred command to securely remove everything so that no one recover any data:shred -n 5 -vz /dev/sdaErase disk permanently under Linux
Step # 1: First, download knoppix Live CD.Step #2 : Boot from CD.
Step #3: How do I use shred command?
Shred originally designed to delete file securely. It deletes a file securely, first overwriting it to hide its contents. However same can be used to erase hard disk. For example your hard disk name is /dev/sda (SCSI hard disk) then type following command:
# shred -n 5 -vz /dev/sdaWhere,
- -n 5: Overwrite 5 times instead of the default (25 times)
- -v : Show progress
- -z : Add a final overwrite with zeros to hide shredding
# shred -n 5 -vz /dev/hdaOther options or Live CDs
Darik's Boot and Nuke CD is highly recommended for permanently erasing hard disk
Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy (CD ISO also available) that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.
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