How to mount a disk in the operating system?

Disk Identification: Use the lsblk or fdisk -l command to determine the device name (e.g., /dev/sdb1).

Creating a Mount Point: Create a directory where the disk will be mounted:

# mkdir /mnt/mydrive 
// Create a directory named mydrive in the /mnt directory

Mounting the Disk: Use the mount command:

# mount /dev/sdb1 /mnt/mydrive 
// Mount the /dev/sdb1 partition to the created mount point

Optionally, specify the filesystem type with the -t option.

Checking the Mount: Use the df -h command to verify if the disk has been successfully mounted.

Automatic Mounting at Boot (Optional): Edit the /etc/fstab file, adding a line in the format:

# <file>       <mount point>   <type>  <options>  <dump>  <pass>
# /dev/sdb1    /mnt/mydrive    ext4   defaults 0       2

• <file>: Device name or UUID. Use blkid for UUID.
• <mount point>: Directory where the disk will be mounted.
• <type>: Filesystem type (e.g., ext4, xfs).
• <options>: Mount options (e.g., defaults, ro).
• <dump>: Dump utility option (usually 0).
• <pass>: Filesystem check order at boot (usually 0 or 2).

Unmounting the Disk: Use the umount command:

# umount /mnt/mydrive 
// Unmount the disk from the specified mount point

or

# umount /dev/sdb1
// Unmount the specified device

If the disk is busy, the -l option for lazy unmount may be required.