Christoph Seelhorst wrote:
> One thing that bothers me: I wrote my OS/2 software download collection on a
> DVD-RAM, and later found out that large files often have ZIP-checksum errors.
> I will try another bbrand of DVD-RAMs, but they are not very common in the
> shops. The best chance to find them is under DVD recorder equipment, not
> computers.
>
> Freundliche Gruesse / Best Regards,
> Christoph Seelhorst  in Verden/Aller, Germany
>   
Hi Christoph,

(Assuming that the archives are <= 2GB each)

After creating the archive with ZIP, [I use 'zip -r -S "{fully qualified 
target archive}" "{fully qualified source spec}" [e.g. D:/*] --  to 
recurse and include all system+hidden files] run the following commands 
against it:

[options ARE case-sensitive!]

1. "{zip-path}\zip.exe -T {archive just generated}" - this will validate 
the entire archive.

2. "\unzip -t {archive just generated}" - this
will validate 
every individual file in the archive.

3. "{unzip-path}\unzip -l ( 
{named listing file of archive contents -- I use "archive-name.DIR"} -- 
this will generate a listing with file timestamps and sizes (+EA+ACL 
sizes) plus totals of same -- for when you may want to selectively 
restore specific files/directories.

This just about guarantees that you don't rely upon a generated "bad" 
ZIP file.
I just use a "templated" generic .cmd file that includes all the above 
steps, with a PAUSE between each individual command, and "%" parameters 
in the .cmd file's properties for source & target etc.

Saves nasty surprises! ;-)

Regards,
Mike

-- 

Failed the exam for
--------------------
MCSE - Minesweeper Consultant and Solitaire Expert
--------------------
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