There is no virus known to F-Secure anti-virus products by this name. However, there is a well-known false positive on 'Readiosys' by Intels and Trends antivirus products on some boot sectors - usually these boot sectors have been slightly corrupted by Anticmos virus but are not actually infected.
If F-Secure anti-virus products don't complain about 'Radiosys-infected' boot sectors, ignore the warning and get an update to your Intel/Trend scanner. You can 'fix' the boot sectors and get rid of the false alarm by running F-Secure's FIXBOOT to the floppy.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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See the manual for your F-Secure product on the Help Center.
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