How to add a new hard disk to linux

Article Title: how to add a new hard disk to linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

Connect the hard disk to the server, start linux, and log on as root.

For example, if I add a new SCSI hard disk, We need to divide it into three areas:

# Fdisk-l view partitions

# Fdisk/dev/sdb

Enter the fdisk mode:

Command (m for help): p // view the partition of the New Hard Disk

Command (m for help): n // create a new partition

Run the m command to check the internal command of the fdisk command. Run the n command to create a new partition. Run the d command to delete an existing partition. Run the p command to display the partition list. Run the t command to modify the ID number of the partition type; l command to display the list of partition ID numbers; a command to specify to start the partition; w command is to modify the partition table to make it function.

Command action

E extended // input e to create an extended partition

P primary partition (1-4) // input p to create the primary partition. Here we select p

Partion number (1-4): 1 // The first extended partition, which can be divided into up to four primary partitions as needed

First Cylinder (1-1014, default 1): 1 // Number of disks starting from the First primary Partition

Last cylindet or + siza or + sizeM or + sizeK: + 1024 MB // It Can Be A number in MB or

Number of disk blocks. Here, we enter + MB to indicate that the partition size is 1 GB.

In this way, we have created a partition. If you want to create more partitions, you can continue to create the partition according to the above steps.

After the partition is created, use w to save the partition.

Command (m for help): w

The partition table has been altered! Calling ioctl () to re-read partition table.

Syncing disks.

In this way, the partition is complete and we need to format it.

# Mkfs-t ext3-c/dev/sdb1 // if multiple partitions exist, change the partition to sdb2.

After formatting, we need to mount the partition,

# Mkdir www // create/www directory. We will mount the new partition to www

# Mount/dev/sdb1/www // mount/dev/sdb1 to/www

# Df // use the df command to view

Filesystem 1K-blocks Used Available Use % Mounted on

/Dev/sda2 3771316 1388956 2190788 39%/

/Dev/sda1 101089 9463 86407 10%/boot

None 62988 0 62988 0%/dev/shm

/Dev/sdb1 485906 8239 452580 2%/www // you can see that this is the partition we just mounted.

At this point, our work is coming to an end. However, if we end this way, we need to manually mount the server every time we restart the server, which is very troublesome, we need to modify the/etc/fstab file for automatic mounting.

# Vi/etc/fstab

Add the following content at the end of the file:

/Dev/sdb1/www ext3 defaults 1 2

Modify sdb1 and/www if there are multiple partitions. Save the modification and restart the server.

Now we have finished adding a new hard disk.