Linux Disk Naming Principles

1. In Linux, hard drives are connected to the computer via SCSI or SATA interfaces, so the naming convention for hard drive devices is typically /dev/sdX, where X is a letter representing a different hard drive device.
2. If there is only one hard disk device in the computer, it is usually named /dev/sda.
3. If there are multiple hard drives in the computer, the second one is typically named /dev/sdb, the third one as /dev/sdc, and so on.
4. If multiple partitions are created on a hard drive, each partition will be assigned a numeric suffix. For example, the first partition on the first disk is typically named /dev/sda1, the second partition is named /dev/sda2, and so on.
5. In addition to hard disk devices, Linux also mounts other storage devices such as USB devices and optical drives to the /dev directory, which may be named as /dev/sdb, /dev/sdc, and so on.

In general, the naming principle of disks in Linux system is based on device interface and device order, where hard disk devices are named in the form of /dev/sdX, where X is a letter representing different hard disk devices.