Go Back   MacRumors Forums > Apple Systems and Services > Programming > Mac Programming

Reply
 
Thread Tools Search this Thread Display Modes
Old Jul 19, 2006, 01:59 AM   #1
Mechcozmo
macrumors 603
 
Mechcozmo's Avatar
 
Join Date: Jul 2004
Disk Imaging

This question doesn't really fit anywhere else... so here goes.

Some disks are copy-protected. However, I want to use them as disk images on my computer. (On my Windows box, but the same could be applied to the Mac) Why do disk images tend to fail? Why don't they just read the raw data on the disk and turn that into an image, seeing as the program can read the disk and work based on it.
Can't the computer take everything about a CD and replicate it into an image?
__________________
This is not the signature you're looking for.
This is not the signature we're looking for.
You can scroll down now.
You can scroll down now.
Mechcozmo is offline   0 Reply With Quote
Old Jul 20, 2006, 12:23 AM   #2
slooksterPSV
macrumors 68030
 
Join Date: Apr 2004
Location: Nowheresville
Send a message via AIM to slooksterPSV Send a message via MSN to slooksterPSV Send a message via Yahoo to slooksterPSV
Quote:
Originally Posted by Mechcozmo
This question doesn't really fit anywhere else... so here goes.

Some disks are copy-protected. However, I want to use them as disk images on my computer. (On my Windows box, but the same could be applied to the Mac) Why do disk images tend to fail? Why don't they just read the raw data on the disk and turn that into an image, seeing as the program can read the disk and work based on it.
Can't the computer take everything about a CD and replicate it into an image?
Well, there are programs that can read the RAW data, but it'll still fail if its copy-protected.

Quote:
Originally Posted by wikipedia
Copy protection in recent digital media
The MPAA's "Copy Protection Awareness Icon" for DVDs.
Enlarge
The MPAA's "Copy Protection Awareness Icon" for DVDs.

More recently, publishers of music and movies in digital form have turned to encryption to make copying more difficult. CSS, which is used on DVDs, is a famous example of this. It is a form of copy protection that uses 40-bit encryption. Copies will not be playable since they will be missing the key, which is not writable on DVD-R or DVD-RW discs. With this technique, the work is encrypted using a key only included in the firmware of "authorized" players, which allow only "legitimate" uses of the work (usually restricted forms of playback, but no conversion or modification). The controversial Digital Millennium Copyright Act provides a legal protection for this in the US, that would make it illegal to distribute "unauthorized" players—which was supposed to eliminate the possibility of building a DVD copier. However, CSS and other such software-based solutions have been reverse engineered (see DeCSS), providing access to the encryption keys and methods.
There's what you need to know.
__________________
AMD Phenom 9600, 2GB RAM, 250GB HDD, ATI Radeon 4850, Vista Home Premium 64-bit
Gateway NV53 with Windows 7 Home Premium 64-bit & Ubuntu 10.04 Lucid Lynx 64-bit
slooksterPSV is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Systems and Services > Programming > Mac Programming

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Hardware Independent Imaging with NetRestore JMRoberts84 Mac OS X Server, Xserve, and Networking 14 Jan 10, 2014 11:02 AM
Anyone Going to Focus on Imaging at the NEC in Birmingham Apple fanboy Digital Photography 12 Oct 9, 2013 03:37 AM
Looking for a Mac disk imaging backup tool like Norton Ghost midimanmac OS X 13 Oct 9, 2012 02:49 PM

Forum Jump

All times are GMT -5. The time now is 08:52 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC