This article give a broad overview of how to add a USB drive to your Linux server. A command sequence is displayed with an explanation afterwards.
Commands to Add a New USB Drive to a Linux Server
In this command sequence we’ll be added a new mount called
cd ls -lha df -h blkid fdisk -l parted /dev/sdc blkid lsblk mkfs.ext4 /dev/sdc1 fdisk -l lsblk cd /mnt/backupdrive mkdir /mnt/backupdrive mount /dev/sdc1 /mnt/backupdrive df -h blkid | grep sdc cp /etc/fstab /etc/bak_fstab blkid | grep sdc >> /etc/fstab nano /etc/fstab lsblk cat /etc/fstab blkid
If the commands seems overwhelming, do not fret. The command sequence is part interrogation of the existing system, part issuing of a command, and part validation that the last command issued worked as expected. When working with critical resources always remember this sequence:
- Interrogation of existing system, and understanding exactly what result you are looking at
- Issuing of a command
- Validation the whatever command you used performed as intended
If at any stage above something unexpected happens, immediately halt the current operation until you understand what it is that is not expected.
To illustrate how one could abbreviate the above sequence, see here:
parted /dev/sdc mkfs.ext4 /dev/sdc1 mkdir /mnt/backupdrive mount /dev/sdc1 /mnt/backupdrive blkid | grep sdc >> /etc/fstab
So in reality we might be able to do the job in just 5 commands. But if we did so, we wouldn’t have known:
- Does a drive called
/dev/sdcalready exist? (Use
fdisk -lto determine that)
- Does a mount called
/mnt/backdrivealready exist? (Use
cd /mnt/backdriveto determine that)
Also no backup of
fstab would have been created which would have mean a disaster if something went wrong.
Other questions the large sequence of commands answers are:
- If we
cd, are we root?
- Show us the existing device attributes using
blkid. Based on this output assign the correct drive name
fdisk -lto view the existing partition table
- List to block device hierarchy using
- Double check
fstabis updated as expected
Working with disks can be tricky but not if you remember the intorregate, issue, and validate sequence.
Contact Us if you require assistance with your Linux hard drives.