linux - add new disk

System environment: CentOS7 64-bit

Scenario: Add a 100G SCSI hard disk to the virtual machine, divide it into an extended partition, format it as an ext4 file format, and mount it to the /opt directory

Steps: Partition -> Format -> Mount -> Automatically mount at startup

1. View disk information

sudo yum install util-linux-ng

lsblk

2. Partition

fdisk /dev/sdb

add new partition
n

Select partition type
e (extended partition)

Select the number of
partitions Partition number (1-4, default 1): 1

Set sector
Start sector (2048-83886079, default is 2048): Enter
Last sector, +sector or +size{K,M,G} (2048-83886079, default is 83886079): Enter

save
w

3. Formatting

mkfs -t ext4 /dev/sdb

4. Mount

mount /dev/sdb /opt

5. Automatically mount at boot

/dev/sdb /opt ext4 defaults 1 1