Subject: Re: cdrom newfs
To: Markus Illenseer <markus@TechFak.Uni-Bielefeld.DE>
From: Jonathan O'Brien <>
List: current-users
Date: 03/30/1995 18:18:26
On Thu, 30 Mar 1995, Markus Illenseer wrote:

> On Mar 29, 12:07pm, Juergen Marenda wrote:
> > Subject: cdrom newfs
> > 
> > Hi everybody,
> > 
> > with the lower prices of CD-Writeing Hardware,
>  The hardware is costy if you do it for your own pleasure.

About 4.5k for a yamaha 4x burner. The kodak 6x one's are still up in the 
20k range. You should be able to pick up an old philips CDD-521 for a 
reasonable price. Wasn't there an article in one of the trade rags about a 
$500 el cheap-o solution coming out in about 6 months?

> > I am wondering weather there are tools to
> > create a cd-rom filesystem (ISO with or without Rockridge extension)
> > as an image file or partition on a harddisk to be able to mount this
> > image (to test and check it) an burn it the to a cd-r.
>  mkisofs 1.3 does the job (carefull on low-endian systems, mkisofs has a bug).
>  Use vnconfig to mount the image to a virtual device and the normal mount -t cd9660
> to finally mount the virtual CD.
>  I don't know how to burn the CD, but I'd guess you would simply copy the image
> to the burner using 'dd if=myimage of=/dev/somescsi bs=64KB'

On a Young Minds CD-Studio (it's a pc that sits between the burner and 
the host because burning a CD-R requires a constant data stream) it 
shows up as a tape drive, and the older ones have limits of 32k blocks. 
So 'dd if=myimage of=/dev/rst0 bs=32k'. Then it's just 'mt -f /dev/rst1 
fsf 1' and away it burns.

> > a fsck fore iso-9660 (+rockridge) would also very nice :-)
>  A what? You dont want that.

A utility to verify the meta-data would be nice. The process of burning a 
CD-R can often produce a questionable master that you'd want to  
thoroughly check before you sent it off for duplication.