From:	MERC::"uunet!CRVAX.SRI.COM!RELAY-INFO-VAX"  2-MAR-1993 04:49  2-MAR-1993 04:49:00.00
To:	Info-VAX@KL.SRI.COM
CC:	
Subj:	RE: PATHWORKS/uVAX 3100/CD's

>                      mikel@anorad.linet.org (Mikel Beck)
>                           PATHWORKS/uVAX 3100/CD's
>
>	We current have two CD's on a MicroVAX 3100, a RRD40 and a RRD42.
>	Is there any way to put a CD in either one of these drives and
>	offer it to our PATHWORKS clients? We do not have an Infoserver
>	at this time, and I don't think we will be getting one in the near
>	future.

    You didn't say whether you run VMS or ULTRIX on your VAX, but I'll address
    both ;-)

        Use F11CD (on the latest VMS CD's) if you want to mount
        ISO 9660 CD's on VMS. It's in the InfoServer directory,
        I believe.
        
        PW4VMS V4.1-2 should allow you to define a file service
        for a read-only device (you should see messages, that
        PCSA_MANAGER was unable to add ACL's, but that's only
        logical, since it is a read-only device).
        
        If that doesn't work, you can define a concealed logical,
        point it to a device with write access, add the service,
        grant access to it and redefine the logical to point to
        the CD (remove ACL's from the writable disk you used, if
        you want to).
        
        Clients using the Basic Redirector can also, without 
        a service being defined, connect directly to the CD with
        something like
        
            USE ?: \\server\disk:[000000]%username *
            
        What's most notable is that PC applications requiring access
        to a CD-ROM through MSCDEX (Microsoft CD-ROM Extensions) will
        not work with a CD as a file service. Those that only do an
        MSCDEX install check could, possibly, be fooled by setting
        the CD-ROM bit in the CDS. Audio won't work.
        
        With a CD off an InfoServer it will work fully, since LADCDDRV is
        what interfaces to LAST on one side, and MSCDEX on the other.
        
        Sharing CD's off PC's can also be done with CD-ROM sharing
        software based on NetBIOS like such as OPTI-Net et al.
        
        With PW4ULTRIX servers, use 
        
            mount -tcdfs -o noversion /dev/device /Mount_point
            
        where the "/Mount_point" directory must start with an upper
        case character (otherwise PC's will only see all lower-case
        filenames, which may mean nothing when an ISO 9660 CD is in
        question).
        
        Additionally, PW4UTRIX V1.2d or later (V1.2e is the latest)
        is required to be able to see files in CD's with o+x (owner
        execute) protection (PW4ULTRIX uses the o+x bit to map the
        DOS SYSTEM file attribute, which effectively makes files
        invisible - or hidden - from the PC point of view.

        It is highly unlikely that MSCDEX will ever be supported with
        file services, but you might ask Microsoft about that (i.e. making
        MSCDEX work with the LAN Manager redirector).
        
    ...petri (petri.backstrom@ljo.mts.dec.com)
       Personal Computing Integration Engineering
       Digital Equipment Corporation