Disk Structure and Disk (I/O) Scheduling
A hard disk drive (HDD) stores data on spinning platters and reads it with heads on a moving arm.
Operating Systems · topic
I/O and disk scheduling
Disk geometry, capacity and access time (seek, rotational latency, transfer), FCFS, SSTF, SCAN, C-SCAN, LOOK and C-LOOK head movement, the return-sweep convention, and how the CPU moves data with programmed I/O, interrupts and DMA.
Study this topic
I/O and disk scheduling cheat sheets
One-page visual sheets for this topic, in the sheet library on the store. Previews are free; the full sheets come with the subject pack.