decoration decoration
Stories

GROKLAW
When you want to know more...
decoration
For layout only
Home
Archives
Site Map
Search
About Groklaw
Awards
Legal Research
Timelines
ApplevSamsung
ApplevSamsung p.2
ArchiveExplorer
Autozone
Bilski
Cases
Cast: Lawyers
Comes v. MS
Contracts/Documents
Courts
DRM
Gordon v MS
GPL
Grokdoc
HTML How To
IPI v RH
IV v. Google
Legal Docs
Lodsys
MS Litigations
MSvB&N
News Picks
Novell v. MS
Novell-MS Deal
ODF/OOXML
OOXML Appeals
OraclevGoogle
Patents
ProjectMonterey
Psystar
Quote Database
Red Hat v SCO
Salus Book
SCEA v Hotz
SCO Appeals
SCO Bankruptcy
SCO Financials
SCO Overview
SCO v IBM
SCO v Novell
SCO:Soup2Nuts
SCOsource
Sean Daly
Software Patents
Switch to Linux
Transcripts
Unix Books
Your contributions keep Groklaw going.
To donate to Groklaw 2.0:

Groklaw Gear

Click here to send an email to the editor of this weblog.


Contact PJ

Click here to email PJ. You won't find me on Facebook Donate Paypal


User Functions

Username:

Password:

Don't have an account yet? Sign up as a New User

No Legal Advice

The information on Groklaw is not intended to constitute legal advice. While Mark is a lawyer and he has asked other lawyers and law students to contribute articles, all of these articles are offered to help educate, not to provide specific legal advice. They are not your lawyers.

Here's Groklaw's comments policy.


What's New

STORIES
No new stories

COMMENTS last 48 hrs
No new comments


Sponsors

Hosting:
hosted by ibiblio

On servers donated to ibiblio by AMD.

Webmaster
Not a software problem | 119 comments | Create New Account
Comments belong to whoever posts them. Please notify us of inappropriate comments.
Not a software problem
Authored by: greed on Monday, June 18 2012 @ 02:08 PM EDT
And "LaserRot" does exist for commercially pressed DVDs. It's rare,
but I've got a couple dozen that all played fine when new, and do not play any
more.

Some of them, I've watched decay: first playback great. Second playback, a year
later, some glitches--green squares, MPEG damage, and other ye olde Read Error
symptoms.

Now? "No DISC" on the DVD player's display. And I have quite the
collection of DVD ROM drives to try flaky discs with, even an old and slow RPC-1
unit.

All of the first release James Bond films suffered this failure. The first
pressing of Kentucky Fried Movie. And so on. (And it was really annoying that
the local rental place had the same pressings I did: theirs had failed, too--and
we got to try my copies and theirs on the store machines.)

[ Reply to This | Parent | # ]

Bit rot and dd + ddrescue
Authored by: Anonymous on Tuesday, June 19 2012 @ 04:21 AM EDT
Some time ago, I was referring to an oldish archive CD, and
horror of horrors, it would not read in any of my drives.

I sorted it out by using dd if=/dev/sdc of=/tmp/archive bs=2k. This made an
image of the CD's contensts on the hard disk that could be re-burned.

A program directly suitable for this purpose is ddrescue.

All the archives made with that batch of CDs were faulty, and needed to be
re-burned.

Hope this helps

[ Reply to This | Parent | # ]

Groklaw © Copyright 2003-2013 Pamela Jones.
All trademarks and copyrights on this page are owned by their respective owners.
Comments are owned by the individual posters.

PJ's articles are licensed under a Creative Commons License. ( Details )