Error: swapon /dev/hda7: invalid argument

[VirginLinux]

During Linux boot up, I got one 'Failed' which is
Activating swap partitions: swapon: /dev/hda7: Invalid Argument

Any one got any idea what this is? RH seems to run fine even with this error. Also I am very new in Linux, how do I make a bootup disk? I got one during the installation and would like to make another copy of it just in case the other one failed. Thanks.

[slapNUT]

The swap partition is not being turned on. Everything is OK now but if you ever need that swap space then it's "headache time". You better get it working. You could post your /etc/fstab file and someone could probably help.

To make a boot disk type:
mkbootdisk --device /dev/fd0 `uname -r`