On modern/latest Linux and Unix distributions, system rely on UUID rather than disk device name itself.
To find out the UUID, you can use this simple command called “blkid” :
blkid <DEVICE_PARTITION_NAME>
Example :
blkid /dev/sda1
Will return something like this :
/dev/sda1: UUID=”1abd977f-65e0-46ab-b2bb-3651053c6e77″ TYPE=”ext4″