of your remaining suspect backup floppies.

and floppies), then do a new full backup, and finally erase (reformat) all

we recommend that you first disinfect all of your other disks (hard drives

recognized by Disinfectant. If you suspect that your backups are infected,

programs usually write their backups in a special format which is not

produced by most of the various hard disk backup utility programs. These

•  Disinfectant cannot be used to check the backup floppy disks or tapes



unpack them and check the unpacked files.

files and want to make certain they do not contain infections, you must

converted or archived by some similar utility program. If you have such

have been compressed with PackIt, or if they have been compressed,

archive, if they have been converted to a text file with BinHex, if they

•  Disinfectant will not detect infected files if they are part of a StuffIt



“floppy shuffling” on these systems.

all the information Disinfectant needs from the startup disk to minimize

to insert the disks you wish to scan or disinfect. We have tried to preload

Click on the Eject button to eject your startup disk. Use the floppy drive

floppy drive. Start up and run Disinfectant from your virus tools disk.

•  Disinfectant may be used on Macs with no hard drive and only a single



person simultaneously.

•  Disinfectant may be installed on a server and used by more than one



advice on what to do if you get an error message.

Messages” for detailed information on what each message means and for

message is issued. Consult the section in this document titled “Error

for Disinfectant to properly repair such a file, an appropriate error

special cases, Disinfectant is able to repair the files. If it is impossible

possible for a file to be infected by more than one virus. In most of these

be run at all, and sometimes viruses only partially infect files. It is also

•  Viruses sometimes damage applications in such a way that they cannot



scan.

problem is not serious. It is annoying, but it does not interfere with the

and flashes an alert intermittently while scanning with Disinfectant. The

When scanning over TOPS, we have noticed that TOPS sometimes beeps



servers.

this special version of the virus tools floppy only for scanning AppleShare

contains a copy of Apple’s “Desktop Manager” startup document file. Use

can avoid this problem by creating a special virus tools floppy that

hang during the process of building its version of the Desktop file.) You

the server using your regular virus tools disk (the Finder will bomb or

contains a large number of applications, it may not be possible to start up

kind of “Desktop” file than is used on regular disks. If the server disk

One problem with AppleShare server disks is that they use a different



over a network.

problems. Scanning a local disk is also much faster than scanning a disk

to avoid file busy errors, insufficient privileges errors, and other

using the Mac to which they are directly connected. This is the only way

that you remove servers and shared disks from production and scan them

disks on a TOPS network. For the best results, however, we recommend

•  Disinfectant may be used to scan AppleShare server disks and remote



enough memory to load them and check them for viruses.

applications use surprisingly large resources and Disinfectant must have

partition. The large memory partition is desirable because some

the preferred partition and you will have to run with the smaller minimum

Macintoshes running MultiFinder, there is not enough memory to allocate

700K and a “minimum” memory partition of 400K. On 1 megabyte

•  Under MultiFinder, Disinfectant has a “preferred” memory partition of



be infections, and will not try to delete them on disinfection runs.

does, however, recognize these “inhibitors.” It does not consider them to

attempt to prevent future infections. Disinfectant does not do this. It

•  Some other virus tools add special “inhibitor resources” to files in an



to make them easy to find in the report.

error messages and messages reporting infected files begin with “###,”

summary at the end of the report tells you if there were any errors. All

and errors on attempts to disinfect “busy” and “damaged” files. The

reports disk full errors on attempts to save files, out of memory errors,

•  Disinfectant tries to perform careful error checking. E.g., it properly



HFS format.

400K floppies are usually in MFS format, while other disks are usually in

•  Disinfectant can scan and repair both HFS and MFS disks. Single-sided



interfering with a scan or disinfection run.

was done intentionally, to limit the possibility of other programs

accessories or MultiFinder program switching while it is running. This

•  Disinfectant is “modal.” This means that you cannot use desk



tried to follow Apple’s human interface guidelines as closely as possible.

possible to use so that even novices will be able to utilize it. We have

•  One of our major design goals was to make Disinfectant as simple as



5.0, 6.0 and 6.0.2.

“Hard Disk 20” file, and on Mac Pluses, SEs, IIs, and IIxs with System

We have tested it on an unenhanced Mac 512K with System 3.2 and the

memory, System 3.2 or later and the hierarchical file system (“HFS”).

•  Disinfectant can be run on any model of Macintosh with at least 512K of



this document and take it seriously.

cases we do not handle properly. Read the disclaimer at the beginning of

files is quite complicated and it is highly likely that there are some rare

•  It is very important to realize that detecting and repairing infected



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