My classiccmp non-retirement :-)

[Doc Shipley]

David Holland wrote:

> On Mon, 2005-06-20 at 20:52 -0400, Jerome H. Fine wrote:
> 
> <snip> 
> 
> 
>>At present, I am using Windows 98 SE (I realize that this
>>is badly off topic, but I can't successfully use anything
>>else with E11 to run my RT-11 programs).  Does anyone
>>have any success with a CD emulation program that will
>>allow me to use a CD image file (an exact duplicate of
>>the ISO image file of the CD which was used to burn the
>>CD in the first place)?  Are there both free and commercial
>>versions?  What are the advantages and the disadvantages?
> 
> 
> (Both free)
> 
> Linux:   mount -o loop,ro /path/to/cdimage.iso /mntpoint
> 	 Or point the emulator at a 'dd' image file of the CD. 
> 
> Windows: DAEMON Tools.  
> 
> 
> The Linux command only tends to work with CD Images that are in ISO
> format's, and contain a filesystem type Linux recognizes. 

   In my experience it's just a filesystem issue.  I've mounted and read 
both CD's and CD images that are not ISO9660 format.  SGI's EFS install 
CDs are a good example.

   By the way, dd will make a valid image of almost any data CD or DVD, 
whether the filesystem is supported or not.  You might have to juggle 
the block size, but that's the only issue I've ever had.  I've 
successfully copied VMS CDs, AIX install and mkCD disks, Mac HFS CDs, etc.


	Doc