The basic steps for mounting a hard disk in a Linux system are as follows: 1. Use lsblk or sudo fdisk -l to view connected hard disks and partitions; 2. Create a mount point directory, such as sudo mkdir /mnt/mydisk; 3. Use sudo mount /dev/sdb1 /mnt/mydisk to mount the partition, and you can manually specify the file system type; 4. Modify the /etc/fstab file to automatically mount it on the computer, and you need to backup and get the partition UUID; 5. Pay attention to permission issues, and use sudo umount to uninstall the hard disk and new hard disks to be partitioned before mounting. The entire process needs to be operated with caution to ensure data security and system stability.

Mounting a hard disk is a common operation in Linux systems, especially when you add a hard disk or want to access data from a certain partition. In fact, the whole process is not complicated, the key is to understand several basic steps and commands.

View currently connected hard disk and partition

Before starting mount, you must first know which hard disks and partitions are available in the system. The most common method is to use the lsblk or fdisk -l command:

 lsblk

This lists all identified block devices, including your hard drive (such as /dev/sda ) and its partition (such as /dev/sda1 ). If you just plugged in a new hard drive, it might appear as /dev/sdb or similar.

You can also use the following command to view more details:

 sudo fdisk -l

This command lists all disks and their partition tables, which are suitable for confirming whether there are unpartitioned new hard disks.

Create a mount point and mount a partition

To mount a hard disk in Linux, you need a "mount point", that is, an empty directory, which is used as an entrance to access the contents of the hard disk.

You can create one yourself, for example:

 sudo mkdir /mnt/mydisk

Then use the mount command to hang the partition to this directory:

 sudo mount /dev/sdb1 /mnt/mydisk

Here /dev/sdb1 is the partition you want to mount, and /mnt/mydisk is the mount point you just created. After completion, you can view the contents of this hard disk by visiting /mnt/mydisk .

What should be noted is:

• The mounted file system type is generally automatically recognized, but if it fails, it can be specified manually, for example:

   sudo mount -t ext4 /dev/sdb1 /mnt/mydisk

• If the partition is in NTFS format, you may need to install ntfs-3g driver first.

Set up automatic mount on the power

If you want this hard disk to be automatically mounted every time you boot, you need to modify the /etc/fstab file. But before the operation, it is recommended to back up:

 sudo cp /etc/fstab /etc/fstab.bak

Then get the UUID of the partition:

 sudo blkid /dev/sdb1

There will be fields similar to UUID="xxxx-xxxx" in the output result. Next edit fstab:

 sudo nano /etc/fstab

Add a line of content (adjust to the actual format):

 UUID=xxxx-xxx /mnt/mydisk ext4 defaults 0 2

After saving and exiting, you can use the following command to test whether the configuration is correct:

 sudo mount -a

If there is no error, it means there is no problem.

Notes and FAQs

• Permission problem : The mounted folder may only be written by root by default, and access by ordinary users is restricted. You can add uid=1000,gid=1000 parameters when mount to specify the user.
• Uninstall the hard disk : When it is no longer used, you should use umount command to uninstall, instead of unplugging the device directly:

   sudo umount /dev/sdb1

• Format a new hard disk : If it is a brand new hard disk, it may need to be partitioned (used fdisk or parted ) first, and then formatted into the file system you need (such as mkfs.ext4 ) before it can be mounted and used.

Basically that's it. Although mounting a hard disk seems a bit technical, it is still very direct to operation as long as you are familiar with a few commands.

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