I've bought a Lenovo ThinkPad E540 back in 2013. It came with a 512GB hard disk, which I replaced with a 256GB SSD. When I ordered it there was something written about the 512GB hard disk, that it has a SSD cache on top. I never knew what was meant by that, until I opened my laptop yesterday to put in some more RAM. Then I saw, that there's a 16GB m.2 SSD sitting inside my laptop. It is mounted as /dev/sdb
as it turns out.
Is there something useful I can use that m.2 for? As I understand it, m.2 are currently not faster than SATA3, so I don't see a point in installing the OS to the m.2 drive (or is there?). Is there anything "useful", I can do with it?
Btw. I found this post: 16GB SSD booster on ubuntu, but I think that doesn't apply to me, since I've got an SSD, not a traditional hard drive