Computers generally have two hard disks, one SSD and one mechanical hard disk. After installing the Ubuntu system, the partition operation is involved. Here are some simple records.
➜ Downloads >sudo fdisk -l
Disk /dev/sda:238.5 GiB,256060514304 bytes,500118192 sectors
Units: sectors of1*512=512 bytes
Sector size(logical/physical):512 bytes /512 bytes
I/O size(minimum/optimal):512 bytes /512 bytes
Disklabel type: dos
Disk identifier:0x5fed11c2
Disk /dev/sdb:465.8 GiB,500107862016 bytes,976773168 sectors
Units: sectors of1*512=512 bytes
Sector size(logical/physical):512 bytes /4096 bytes
I/O size(minimum/optimal):4096 bytes /4096 bytes
Disklabel type: dos
Disk identifier:0x8d22df8d
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048512002047512000000244.1G 7 HPFS/NTFS/exFAT
/dev/sdb2 512002048976769023464766976221.6G 7 HPFS/NTFS/exFAT
Disk /dev/mapper/ubuntu--vg-root:230.3 GiB,247245832192 bytes,482902016 sectors
Units: sectors of1*512=512 bytes
Sector size(logical/physical):512 bytes /512 bytes
I/O size(minimum/optimal):512 bytes /512 bytes
You can see the two device nodes /dev/sda and /dev/sdb, where /dev/sda corresponds to the solid state drive, and /dev/sdb corresponds to the mechanical hard drive
# mkfs.ext4 /dev/sdb2 //Note: Will/dev/sdb2 is formatted as ext4 type
mount /dev/sdb2 ~/Code
df -h
Because the mount will fail after restarting the server, you need to write the partition information to the /etc/fstab file to make it permanently mounted:
/dev/sdb2(disk partition)/Code (mount directory) ext4 (file format) defaults 00
chgrp: change file group
chown: change the owner of the file, or change the group of the file at the same time