if it ends up that you need to mount partitions to scan them it goes like this on teh command line.
Each harddrive and partition has a file name associated with it. No c: drives or anything like that.
The harddrive names go like this:
/dev/hda (primary master)
/dev/hdb (primary slave)
/dev/hdc (secondary master)
/dev/hdd (secondary slave)
then each partition has a number associated with it and it's name is it's number added onto the name of the harddrive.
For instance /dev/hdc2 would be the second partition on the secondary slave ide device.
If you have SATA devices it may mess up the naming a bit.
you can find out details about the setup thru the dmesg command, and you filter it thru the grep command to filter out stuff that your not looking for.
dmesg |grep hd
and that should tell you some stuff. Alternately you can go to /proc/ide and there are directories their that include details about your avaible drives, like model and media type (like disk vs cdrom).
In Linux there is no C drive or anything such thing. You have one directory tree, with a root. Root = /
Everything you have access to is part of that tree, all file systems either on a network, ramdisks, dvd disks, harddrives, or whatnot have to be mounted to a directory on that directory tree for you to access it.
knoppix should automaticly detect and mount partitions for your conveinence. You can see the currently mounted file systems with the /etc/mtab file.
The easy way to see the contents of files is with the cat command.
cat /etc/mtab
that will show you what is mounted.
knoppix (I think) will mount things to the /mnt directory. Like /mnt/hda1. Inside that directory will be the contents of your harddrive partitions.
to manually mount a file system you make a directory and then mount the partition to it.
mkdir /mnt/harddrive
mount /dev/hda1 /mnt/harddrive
to move to a directory you go:
cd /mnt/harddrive
to scan all file and directories go like this:
cd /mnt
freshclam
clamscan -ri
freshclam updates the virus definitions and clamscan will scan the directories.
The -ri is command options and the -r tells it to do it recursively (descend into directories, otherwise it only scans current directory) and the -i tells it to only print out infected files. If you want to see the progress as it runs just go:
clamscan -r
it can take a LONG time to finish scanning.
It will give you a summary when it's finished.
Hope that helps