FreeBSD 4.5.
Hitachi DVD-RAM drive

I have to support writing files to a DVD-RAM in a Windows compatible mode.
Normally I would treat the thing as a slow HD and read and write at my 
leisure, but Windows does not play nicely with UFS.  So I came upon the 
solution of writing an ISO image out to the disk, like so:

readcd dev=$DVDRAM_SCSI_ID -w f=image.iso.

Now this works and is portable, but it has an unfortunate side effect. If I 
attempt to write another image out, I overwrite the existing data.  

So, there are three possible solutions:

1. Move to UDF, (works for me, but management is scared of anything labelled a 
"kernel change")
2. Figure out some way to get the first sector after the last ISO from the 
disk, and start writing the new data there.  (I checked camtools and readcd 
and came up with nothing.)
3. Make a new ISO with all of the old and the new data, write that out to 
disk. (A bit resource intense, but it should work.)


The question for you is whether I was thorough enough evaluating method 2.  Is 
there some way to find out the last sector used on a SCSI device from the 
command line?  If not, is there some way to roll my own?

Thx,

Charles


To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message

Reply via email to