The Diskwasher virus is a reasonably simple diskette and Master Boot Record infector. It is only able to infect a hard disk when you try to boot the machine from an infected diskette. At this time virus infects the Master Boot Record, and after that it will go resident to high DOS memory during every boot-up from the hard disk.
Once Diskwasher gets resident to memory, it will infect practicly all non-writeprotected diskettes used in the machine.
Diskwasher contains the text "From DiskWasher with love", surrounded with the heart-symbols.