2. I've recently received an assembled PC. I don't know if the disk is an SSD or old HDD (whether SATA or other technologies). I can't find a way to tell if the disk is SSD or not, apart from the size of the disk.indows Drive Optimizer (formerly Disk Defragmenter) reports whether a drive is an HDD or SSD. You can access this utility by pressing. +. , searching for  optimize , and selecting Defragment and optimize your drives. This will generally work in any system where the disks are not plugged into a RAID card.
1. countable noun. 1  A washer is a thin flat ring of metal or rubber which is placed over a bolt before the nut is screwed on. 2  A washer is the same as a washing machine. 3  a person or thing that washes. 4  a flat ring or drilled disc of metal used under the head of a bolt or nut to spread the load when tightened.
A washer with a key to prevent rotation, and is used to lock two nuts in place, without allowing the torque applied to the top nut to cause the bottom nut to also rotate (such as in a threaded headset on a bicycle).