This is not a question but a information for other users which are using cd for portable ClamWin.
Scanning from USB is not suitable if your system already infected with viruses. The virus infected my usb files also when I try to check the system and they were useless for me!!!! I did this experience with some other software and found useful then apply on with Clamwin.

The procedure is very simple, just do any thing as usual as you were doing for making portable ClamWin, except the path of databse in "ClamWin.conf" under bin folder.

Change

"database = ..\db"

into

database = C:\db

When ever you will trying ClamWin from CD, You should copy the latest db files (main.cvd , daily.cvd) under c:\db.

thanks for the tip. I took the liberty to chnage your original subject.