CRC errors?

I'm getting CRC errors when attempting to UNZIP the BASIC016.ZIP file in the [KITS] directory on the OpenVMS Hobbyist CD. This may or may not also happen on a real Alpha, I don't know, but unfortunately I don't have a real Alpha anymore. Can someone please see if 1) you can even duplicate this or not and 2) if so, does it also happen on a real Alpha or not?

Either way it's not a serious problem for me though as I just worked around it by unzipping the thing on Windows, FTPing the savesets over to the emulator and then doing a "set file/attr" command to get back the proper saveset record attributes.

Note that I have NOT run into any other CRC errors with any other savesets or in any other context.

I don't have the Alpha hobbyist disc to test this but I have noticed some oddities in the past with certain zip files when using an older version of InfoZIP - CRC errors, hangs, crashes. You can get the version number and date from InfoZIP by running it without any parameters. I have had problems with InfoZIP even as new as 2006. You could try building the latest version from source - that has solved my problem a few times in the past.

Matt

I was using UNZIP 5.52, the one from the Hobbyist CD itself. UNZIP 5.50 from some HP website also did the same thing.

I've now built UNZIP 6.0 from source per your excellent suggestion and alas it has exactly the same problems.

The problems are probably with the ZIP archive itself, but I'd love to know if this also happens on a real Alpha. My bet is that it does.

$ unzip basic016
Archive: DKA0:[users.dan]BASIC016.ZIP;1
new version of [.basic016.documentation]basic016_cover.ps? [y]es, [n]o, [A]ll, [N]one, [r]ename: A
inflating: [.basic016.documentation]basic016_cover.ps
inflating: [.basic016.documentation]basic016_cover.txt
inflating: [.basic016.documentation]basic016_iguide.ps
inflating: [.basic016.documentation]basic016_iguide.txt
inflating: [.basic016.documentation]basic016_spd.ps
inflating: [.basic016.documentation]basic016_spd.txt
inflating: [.basic016.kit]basic016.a
inflating: [.basic016.kit]basic016.b [ _close_qio: sys$synch found I/O failure ]
[ %SYSTEM-W-ENDOFFILE, end of file ]
inflating: [.basic016.kit]basic016.c
inflating: [.basic016.kit]basic016.d bad CRC d4f8f664 (should be cef1e30f)
[ WriteQIO: sys$synch found I/O failure ]
[ %SYSTEM-W-ENDOFFILE, end of file ]
[ WriteQIO: sys$synch found I/O failure ]
inflating: [.basic016.kit]basic016.e
inflating: [.basic016.kit]basic016.f
inflating: [.basic016.kit]basic016.g
inflating: [.basic016.kit]basic016.h

inflating: [.basic016.kit]basic016.i late

error: invalid compressed data to inflate
$<hr>

Try to get to the bottom of this, especially when using a Beta version of a new emulator. You could try to download PersonalAlpha and boot it from your existing disk container file. Then repeat the same UNZIP operation.

If noone else has this CD and the same problem, can you make that .ZIP file available ?

Volker.

I am using PersonalAlpha and have the OpenVMS 8.3 Hobbyist CD

I have also unzipped and installed the included BASIC016.ZIP without any problems.

It should be noted that I am using the following Info-Zip version

UnZip 6.00 of 20 April 2009, by Info-ZIP.

Did you UNZIP from the CD directly ? Is DKA0: your CD ?
Does UNZIP -l also produce these errors ?
Can you copy with .ZIP file to your 'virtual' disk with BACK/VERIFY, then try UNZIP or UNZIP -l on the copied file ?

Just trying to narrow down, where those errors may be coming from. The fact that you could unzip the file on Windows, seems to at least indicate, that the file contents on the CD should be o.k.

Volker.