[Info-vax] VMS V8.4 (IA64) v. Non-directory file named fred.DIR; 1

[glen herrmannsfeldt]

John E. Malmberg <wb8tyw at qsl.network> wrote:

(snip, I wrote)
>> Not only isn't it compressed (which often doesn't help much),
>> but seems to be padded out ot 4GB. It isn't likely to accidentally
>> come out exactly 4GB.

> The volume is a dual format DVD.

> To build the volume, you start out with a LD container file that is the 
> size of the target DVD, and then use a special image backup to transfer 
> the system disk to it.

> This results in the entire DVD being formatted.

It seems that there are large blocks of binary zero, at various
spots in the file. ZIP or gzip will easily compress those out.

Normally, I find compressing such files not so useful. In some 
cases, it is a few percent smaller, but requires twice the disk
space to restore. 

> Has anyone contacted HP and recommended that they also offer ZIPPED 
> DVD/CDROM Images for download?

Or generate one closer to the right size.

-- glen