Internal Zip drive not recognized.

[Gerry Tool]

I have an internal zip drive connected as hdb.  On other Linux systems,
I access it with an entry in fstab for /dev/hdb4.  This drive is not
showing up in ubuntu Device Manager, so when I try to mount it I get an
error "mount: special device /dev/hdb4 does not exist".  My fstab entry
is
/dev/hdb4       /mnt/zip        auto    rw,user,noauto   0 0

Any suggestions for getting this to mount?

Thanks.

Gerry Tool