How to know whether Mac has SSD or HDD installed

Question

How do I know whether my Mac has a SSD or HDD installed without having to literally open my Mac?

PS. Is there anyway to know it from Disk Utility?

Answer 1

• Apple Menu -> About This Mac -> System Report
• Select Storage in the Hardware section
• Select "Macintosh HD" on top

Alternatively you can run system_profiler SPSerialATADataType or system_profiler SPStorageDataType in Terminal which more or less gives you the same information

Answer 2

Apple Menu -> About This Mac -> System Report -> Hardware -> SATA/SATA Express

For my MacBook Pro (Early 2015) this showed the Serial-ATA Device Tree, from which I was able to get the model number for my SSD. This related question, How to get serial number from Mac hard disks? might help if you think you have an HDD.