Discussion:
Location of volume serial number on UDF V2.50 formatted DVD(-RAM)
(too old to reply)
Robert Prins
2022-07-08 13:45:05 UTC
Permalink
Hi all,

It's (obviously) shown by a "VOL" command, but does anyone here know where to
actually find it on the disk? And its format? Four bytes? Four words? Four
longints? Trying to use a hex editor (HxD) to find it, but no luck.

Thanks,

Robert
--
Robert AH Prins
robert(a)prino(d)org
The hitchhiking grandfather - https://prino.neocities.org/
Some REXX code for use on z/OS - https://prino.neocities.org/zOS/zOS-Tools.html
Kerr-Mudd, John
2022-07-08 20:48:31 UTC
Permalink
On Fri, 8 Jul 2022 13:45:05 +0000
Post by Robert Prins
Hi all,
It's (obviously) shown by a "VOL" command, but does anyone here know where to
actually find it on the disk? And its format? Four bytes? Four words? Four
longints? Trying to use a hex editor (HxD) to find it, but no luck.
It's a (usually Hidden & System & R/O) directory entry, IIRC, with Volume label attribute bit set.

http://helppc.netcore2k.net/table/directory-format
--
Bah, and indeed Humbug.
Kerr-Mudd, John
2022-07-08 20:51:11 UTC
Permalink
On Fri, 8 Jul 2022 13:45:05 +0000
Post by Robert Prins
Hi all,
It's (obviously) shown by a "VOL" command, but does anyone here know where to
actually find it on the disk? And its format? Four bytes? Four words? Four
longints? Trying to use a hex editor (HxD) to find it, but no luck.
Sorry, I didn't read your request properly. please ignore previous mansplaining post.

Or better still, Frank, don't approve it (and this) for posting.
--
Bah, and indeed Humbug.
Frank Kotler
2022-07-08 21:53:53 UTC
Permalink
On 07/08/2022 04:51 PM, Kerr-Mudd, John wrote:

,,,
Post by Kerr-Mudd, John
Or better still, Frank, don't approve it (and this) for posting.
Possible issue with posting?

If you are having trouble please retry.

I can be reached at:
***@myfairpoint.net

Hang in there!

Best,
Frank
Kerr-Mudd, John
2022-07-09 10:13:25 UTC
Permalink
On Fri, 8 Jul 2022 17:53:53 -0400
Post by Frank Kotler
,,,
Post by Kerr-Mudd, John
Or better still, Frank, don't approve it (and this) for posting.
Possible issue with posting?
No, the problem was me shooting my mouth off without looking at the actual question.
And now it's out there for all to see! Ah well, cestlavvy, as they say, erm somewhere abroad.
Post by Frank Kotler
If you are having trouble please retry.
Hang in there!
--
Bah, and indeed Humbug.
Frank Kotler
2022-07-09 11:21:19 UTC
Permalink
Post by Kerr-Mudd, John
On Fri, 8 Jul 2022 17:53:53 -0400
Post by Frank Kotler
,,,
Post by Kerr-Mudd, John
Or better still, Frank, don't approve it (and this) for posting.
Possible issue with posting?
No, the problem was me shooting my mouth off without looking at the actual question.
And now it's out there for all to see! Ah well, cestlavvy, as they say, erm somewhere abroad.
French. C'est la vie. That's life.

I replied - tried to - saying that you guys aew on thw "auto-approve"
list and I don't have a chance to not approve your posts. I also
suggested that Ralf Brown's Interrupt List might have an answer to
Robert's question. Haven't looked to see if that's true. That post did
not appear. I think I botched sending it.

There was one issue that Eternal-September, who I post messages with an
"approved" header with, had changed their IP. My little moderation
helper program has no DNS capability. I resort to doing "ping
example.com" and hard coding the IP into my program. It is in assemb;y
language, so it is on topic. Maybe we can discuss DNS someday... This
delayed Robert's post slightly, but I got it "fixed".
..

Now. Eternal-September is claiming "duplicate post not sent" on
everything, but is posting stuff first(?). I think. I don't know why.
Might be me, might be them. Work in progress.
Post by Kerr-Mudd, John
Post by Frank Kotler
If you are having trouble please retry.
Hang in there!
We still haven't found that volume label...

Best,
Frank
Kerr-Mudd, John
2022-07-09 16:38:03 UTC
Permalink
On Sat, 9 Jul 2022 07:21:19 -0400
Post by Frank Kotler
Post by Kerr-Mudd, John
On Fri, 8 Jul 2022 17:53:53 -0400
Post by Frank Kotler
,,,
Post by Kerr-Mudd, John
Or better still, Frank, don't approve it (and this) for posting.
Possible issue with posting?
No, the problem was me shooting my mouth off without looking at the actual question.
And now it's out there for all to see! Ah well, cestlavvy, as they say, erm somewhere abroad.
French. C'est la vie. That's life.
Yes. But I should have posted "sestlavvy", as a rough transliteration.
Post by Frank Kotler
I replied - tried to - saying that you guys aew on thw "auto-approve"
list and I don't have a chance to not approve your posts. I also
Ah that explains it.
Post by Frank Kotler
suggested that Ralf Brown's Interrupt List might have an answer to
Robert's question. Haven't looked to see if that's true. That post did
not appear. I think I botched sending it.
There was one issue that Eternal-September, who I post messages with an
"approved" header with, had changed their IP. My little moderation
helper program has no DNS capability. I resort to doing "ping
example.com" and hard coding the IP into my program. It is in assemb;y
language, so it is on topic. Maybe we can discuss DNS someday... This
delayed Robert's post slightly, but I got it "fixed".
..
Now. Eternal-September is claiming "duplicate post not sent" on
everything, but is posting stuff first(?). I think. I don't know why.
Might be me, might be them. Work in progress.
Post by Kerr-Mudd, John
Post by Frank Kotler
If you are having trouble please retry.
Hang in there!
We still haven't found that volume label...
Mr google gave me:

https://stackoverflow.com/questions/43707425/get-the-serial-number-of-the-volume-udf-cd-dvd-disk

which implies it isn't stored anywhere; it's a checksum.

Looks tricky.
--
Bah, and indeed Humbug.
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