We are often cautioned against unplugging USB drives in case it is currently being read from or written to. When a computer is suspended, hibernated, or asleep is it obviously not writing any data; it may have been in the middle of a read/write, however, it will have put such an operation on hold.
Since no arms are moving (for USB hard-drives), or bytes on the drive flickering on and off (for flash drives), is it then "safe" to unplug a drive?
Is this true even if data is being written to it, but the operation temporarily "suspended"? (assuming you don't mind that specific file only having been half-written to the drive)