"GenB" is short for "generic boot sector infector" and "GenP" for "generic partition sector infector". There are no such viruses at all. These are simply a "shorthand" that McAfee SCAN uses to tell you that it is sure there is something suspicious in your diskette's boot sector (GenB) or your hard disk's MBR (GenP) but it doesn't know precisely what.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note You need administrative rights to change the settings.
F-Secure anti-virus products detect the viruses known to McAfee as "GenB" or "GenP" by their CARO names.
The last time we looked, SCAN detected the following viruses as "GenB" or "GenP": Abs-3, AntiCMOS, B2, Boot-Y, BootEXE, Crazy_Eddie, Den_Zuko, Digress, Eko_Terror, Exe_Bug, Flip, Frankenstein, Gena, Hex, Ibex, JKTK, Joshi, KeyDrop, Malaga, MPHTI, MZ_Boot, Peanut, Pilgrim, Pretty, Revolution, Rm, SBP, Sciagura, Screaming_Fist, Silly, Smile, Stakkabo, Strange, Tequila, Tiso, Tony_Boot, Verify, VVM.B, X-Boot and Yeah.