Create and Wipe Storage Device in Linux for Security+ Exam
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@endtoendpaper
Look at disks and devices
  • sudo fdisk -l
  • fdisk for creating, deleting, resizing, changing, moving partitions on a hard drive
  • f stands for fixed disk or format disk
  • /dev/sda are device paths or available DISKS
  • dev stands for device paths
  • sd is short for SCSI mass Storage Device
  • Under each will be partitions created listed as devices e.g. /dev/sdb1
Create partition of /dev/sdb
  • sudo fdisk /dev/sdb
  • n for new, 1 for number, make first and last sectors default
  • w to commit the changes
Format partition
  • sudo mkfs -t ext4 /dev/sdb1 (make filesystem)
  • ext4 is the type of filesystem
Create folder to mount partition
  • sudo mkdir /datavol
Mount partition to a folder
  • sudo mount /dev/sdb1 /datavol
Add some example files
Wipe device
  • sudo dd if=/dev/urandom of=/dev/sdb1
  • disk duplicator, if input is random, if output is to where we want to overwrite data
Unmount filesystem
sudo umount /dev/sdb1

du stands for disk usage
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