In Linux : How to use dd to wipe a disk so that every sector is populated with z

Question

In Linux :

How to use dd to wipe a disk so that every sector is populated with zero?

How to use dd to wipe a disk so that every sector is populated with random data?

How to use dd to create a 5,000,000-byte file and is populated with zero?

How to use dd to create a 32,000,000-byte file and is populated with random data?

How to use dd to copy a partition of a hard drive to a file?

How to use dd to copy a partition of a hard drive to a partition on another hard drive?

How to use dd to copy the content of the memory to a file?

How to use dd to display the first sector (512 bytes) of the hard drive?

How to use dd to display the first 100 sectors (51200 bytes) of the hard drive?

How to use dd to display the 100th sector (512 bytes) of the hard drive (assuming we call the beginning sector of the drive the 1st sector, not the 0th sector)?

How to wipe a disk so that your name is written continuously on every sector of the drive ?

List the command used to verify that you successfully completed task in Question A. Show the output of the command

Explanation / Answer

Question 1

dd if=/dev/zero of=/dev/sdX bs=1M

Question 2

dd if=/dev/random of=/dev/sda

Question 3

dd if=/dev/zero of=/dev/sda/BigFile.bin bs=5000 count=1000

Question 4

dd if=/dev/random of=/dev/sda/BiggerFile.bin bs=32000 count=1000

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