[Info-vax] Filesystems on VMS, was: Re: Command Procedure Pipe output to a variable

[abrsvc]

On Wednesday, September 22, 2021 at 1:16:24 PM UTC-4, Simon Clubley wrote:
> On 2021-09-22, abrsvc <dansabr... at yahoo.com> wrote: 
> > 
> >> 
> >> BTW, did you know that once you load a device driver into VMS, you 
> >> can't even remove it unlike what you can do elsewhere ? 
> >> Simon. 
> > 
> > The above statement is not 100% true. There are some drivers that can be unloaded. Granted these are few, but the mechanism is there, but rarely used.
> Excellent Dan. For Alpha what is the unload command I use and where 
> is this documented ? How exactly does this command trigger the execution 
> of unload code in the driver so the driver can clean up its resource 
> use prior to the final unload ? 
> 
> Also, do you happen to know why, when I have mentioned this in the past, 
> I was told it wasn't possible ? 
> 
> Thanks,
> Simon. 
> 
> -- 
> Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP 
> Walking destinations on a map are further away than they appear.
I don't have a recent example as I have not been involved of late with drivers.  However, the ability is  there if the driver is written to handle it.  I never said that any of  the standard drivers supplied as part of OpenVMS could do this as I am not aware of one that can. However, making a statement that this is not possible is in fact, false. There have been drivers in the past that could be unloaded and I am sure that one could be written today that could as well.