How to mount hard disk in centos

CentOS hard disk mount is divided into the following steps: determine the hard disk device name (/dev/sdX); create a mount point (it is recommended to use /mnt/newdisk); execute the mount command (mount /dev/sdX1 /mnt/newdisk); edit the /etc/fstab file to add a permanent mount configuration; use the umount command to uninstall the device to ensure that no process uses the device.

CentOS hard drive mount: those pitfalls you may not know

Many novices often get confused when mounting hard drives on CentOS and even fall into some inexplicable pits. In fact, this thing is not that mysterious. The key is to understand the underlying logic and some tips. This article will talk about CentOS hard drive mounting, hoping to help you avoid those crazy traps.

First of all, we have to understand that CentOS is actually Linux, so the principle of mounting a hard disk is the same. You have to first know where your hard drive is, that is, the device name, usually /dev/sdX or /dev/xvdX , X represents letters, such as a, b, c... It depends on your system and hard drive interface. fdisk -l command is your good friend. It can clearly tell you all the information about the disk. Don't forget to run this command with root permissions, otherwise you won't see anything.

Then, you need a mount point, which is like your house number. The system finds your hard drive through this "door number". Generally speaking, you have to create a directory as the mount point, such as mkdir /mnt/newdisk , which will create a directory called newdisk under /mnt . The /mnt directory is specially used to mount external devices. Although you can also mount it elsewhere, for the sake of specification, it is recommended to use /mnt .

Then, the real mount operation. The easiest command is mount /dev/sdX1 /mnt/newdisk , and mount /dev/sdX1 (your hard disk partition) to /mnt/newdisk . Note that sdX1 represents your first partition, if you want to mount the second partition, it is sdX2 , and so on. The most prone to errors here is the device name. If you are not careful, you may hang the system disk incorrectly, and the consequences will be unimaginable! So, you must check carefully!

Now you can access the files on your hard drive in the /mnt/newdisk directory. However, after restarting, this mount will fail. In order for the mount to take effect permanently, you need to edit the /etc/fstab file. This file defines the device that is automatically mounted when the system starts. Editing this file requires caution, as a wrong configuration may cause the system to fail to boot. The correct format is probably like this:

 <code>/dev/sdX1 /mnt/newdisk ext4 defaults 0 0</code>

The first column is the device name, the second column is the mount point, the third column is the file system type (viewed with lsblk -f ), the fourth column is the mount option ( defaults is the most commonly used), and the fifth and sixth columns are generally 0 0. After adding, remember to check the syntax to make sure there are no errors, otherwise an error will be reported when the system starts. In this place, many people will fail due to incorrect file system type writing or confusing mount options. I have been struggling for a long time because of a space problem, so I must check it carefully!

Finally, let’s talk about some advanced skills. If you need to mount a network hard disk or other type of storage device, the commands will be slightly different, but the principles are the same. Also, umount command is used to uninstall the device. Make sure that no process is using the device before use, otherwise the uninstallation will fail. Remember to back up important data before operating, just in case!

In short, CentOS hard disk mount is not complicated, but details determine success or failure. Carefully check the configuration of the device name, file system type, mount point and /etc/fstab file to avoid unnecessary trouble. If you practice more and summarize more, you will become a CentOS hard disk mount expert!

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