there are two types of partitions in the hard disk is primary and logical.
There are two types of Hard disk. 1:Sea gate disk 2:SATA Hard disk
storing programsThere are many types of hards. Internal and external are main two types.
Caliper and Disk brakes
USB stick and a floppy disk.
sodimm and micro dimm
CDR CDRW DVDR DVDRW Blueray
digital and analog
Fisk fragmentation, and A.I.R.Y fragmentation.
Mobile crushers and portable crushers are the same, just not called the same. The mobile crusher has two types, wheeled and tracked crusher.
DNA and RNA
primary and secondary