%%File: VIRS0776.TXT %%Name/Aliases: Typo, Type Boot %%Platform: PC/MS-DOS %%Type: Boot sector., %%Disk Location: Floppy disk boot sector., Hard disk boot sector. %%Features: Memory resident; TSR. %%Damage: Corrupts boot sector, Interferes with a running application. %%Size: Overlays boot sector, no increase %%See Also: %%Notes: Infects floppy and hard disk boot sectors. Infects data disks as well as system disks. Attempting to boot with an infected data disk in the drive loads the virus then asks for a system disk. Every 50 printed characters, the virus inserts a typo. Typos in printed output. 80286 and 80386 machines hang when booted with an infected disk. You can detect infected diskettes by running Chkdsk . If you get 1k of bad sectors, that's a good sign of Typo (or Italian virus), as FORMAT marks an entire track (5k on a 360k diskette) as bad if it finds a defect. Treatment consists of simply copying all the files off an infected diskette (using "COPY *.*"; do not use Diskcopy or any image copier), and reformatting the diskette