To query the disk type in Linux (e.g., SSD or HDD), you can use several methods. Here are some common approaches:
1. Using lsblk
The lsblk command lists information about block devices.
Command:
lsblk -d -o NAME,ROTA,TYPE
Output:
-
ROTA: Indicates if the disk is rotational.-
1: HDD (rotational) -
0: SSD (non-rotational)
-
Example:
NAME ROTA TYPE sda 1 disk # HDD nvme0n1 0 disk # SSD
2. Using cat to Read Disk Attributes
Linux provides disk attributes in the /sys/block directory.
Command:
cat /sys/block/sdX/queue/rotational
Output:
-
0: SSD -
1: HDD
Replace sdX with the disk identifier (e.g., sda).
Example:
cat /sys/block/sda/queue/rotational 1 # HDD