[Info-vax] OT: For MAC Lovers Only :-)

[Johnny Billquist]

On 2012-10-13 22:05, JF Mezei wrote:
> On 12-10-13 16:01, Stephen Hoffman wrote:
>
>> COPY works just fine for block transfers from foreign-mounted media.
>
> Is there logic somewhere that will do a full media copy if ANSI labels
> were not found when the disk was mounted ? I was unaware of that.  I
> thought COPY would look for the next file header and copy all data to
> end of file marker.

Not sure I understand the question. As the OP wrote, he mounted the disk 
foreign, and did a copy of it. Copy will read all the blocks, starting 
with block 0, and continue until you get an error because you try to 
access a block that don't exist on the device, which is when you've 
reached the end.

That's the point with foreign mounts. VMS does not try to understand the 
format of the disk. It does not look for labels, or files, or anything 
fancy at all. It just becomes one big pile of blocks.
And COPY can then not look file file headers or file markers. There are 
none on the disk that COPY could know about.

	Johnny