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Old 08-16-2006, 03:15 PM   #1
agentchange
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How do I delete/erase/format DVD ISO setup disk?


or change the read-only attribute on the disk? Yes, I know that this disk was not properly burned in the first place.


linux:/media/dvdram # rm *.*
rm: cannot remove `SUSE-10.0-CD-OSS-i386-GM-CD1.iso': Read-only file system


linux:/media/dvdram # rm *.* -f
rm: cannot remove `SUSE-10.0-CD-OSS-i386-GM-CD1.iso': Read-only file system


linux:/home/justin # growisofs -Z /dev/dvdram=/dev/zero
:-( /dev/dvdram: media is not recognized as recordable DVD: 9
 
Old 08-16-2006, 03:21 PM   #2
pixellany
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Are you trying to erase files on a DVD? Not possible--optical media is read-only.
If you have re-writeable media, you can erase and then write new data, but this is not a filesystem operation.

With CDs, I would always use CD-R media--ie use once, then discard. With DVDs, the economics are not so obvious, but I think I would have the same policy.

I hope I'm answering the right question.
 
Old 08-16-2006, 05:55 PM   #3
agentchange
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This is a Suse installation disk burned onto a CD-R on a DVD drive, as an actual .iso file. Somehow, it is designated read-only. Surely there is some way to turn that attribute off.
 
Old 08-16-2006, 06:01 PM   #4
pixellany
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Quote:
Originally Posted by agentchange
This is a Suse installation disk burned onto a CD-R on a DVD drive, as an actual .iso file. Somehow, it is designated read-only. Surely there is some way to turn that attribute off.
Surely there is NOT!!!

CDs and DVDs are read-only

Also, an .iso file burned to a CD cannot be used for installation. You have to burn the CD using the "burn from iso" or "record from iso" option.
 
Old 08-16-2006, 11:50 PM   #5
agentchange
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Quote:
Originally Posted by pixellany
Surely there is NOT!!!

CDs and DVDs are read-only

Even if I burned the CD?
 
Old 08-17-2006, 05:09 AM   #6
mihalisla
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Mybe k3b CD/DVD tools programm could help u erase dvd-rw disks.
 
Old 08-17-2006, 05:28 AM   #7
ethics
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Quote:
Originally Posted by agentchange
This is a Suse installation disk burned onto a CD-R on a DVD drive, as an actual .iso file. Somehow, it is designated read-only. Surely there is some way to turn that attribute off.
The physical media itself is read-only, how exactly do you think you are going to over write that with a Linux command? To my knowledge the entire composition of the CD does not lend to re-writing (why would we have rw disks?) and so it's a bit futile really. You'll have to burn another one i'm afraid.

Doubt even a multi session would work (can you do that with images?) since you'd have taken u pall the space anyway
 
Old 08-17-2006, 03:01 PM   #8
rwc_zippy
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this issue has been cross-posted...

it was also posted here:

http://www.linuxquestions.org/questi...d.php?t=474252



-Robb
 
Old 08-17-2006, 03:36 PM   #9
pixellany
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Quote:
Originally Posted by agentchange
Even if I burned the CD?
Optical media is read-only---no matter WHO burned the CD.

I sense that you have an image in your head of how CDs work that is not quite right.
 
Old 08-17-2006, 04:24 PM   #10
rwc_zippy
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Quote:
Originally Posted by agentchange
Even if I burned the CD?
That's the truth...! Just like pixellany said!

you may want to read the following from the How Stuff Works website:

Quote:
CD-R works by replacing the aluminum layer in a normal CD with an organic dye compound. This compound is normally reflective, but when the laser focuses on a spot and heats it to a certain temperature, it "burns" the dye, causing it to darken. When you want to retrieve the data you wrote to the CD-R, the laser moves back over the disc and thinks that each burnt spot is a bump. The problem with this approach is that you can only write data to a CD-R once. After the dye has been burned in a spot, it cannot be changed back.
{link to full article}

once again - Google to the rescue!

edit: it just occurred to me that you still haven't confirmed if you are talking about DVD-RAM drive or DVD-Removable Media. This might clear up some confusion...

Last edited by rwc_zippy; 08-17-2006 at 04:27 PM.
 
Old 08-19-2006, 12:36 AM   #11
agentchange
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Note to all viewers! Since people keep calling so much attention to the fact that I have two, I repeat, TWO threads running with exactly the same content, I feel inclined to explain myself, and remind you all, once again, that I have TWO threads running at the same time! With the exact same content! In two different forums!

After waiting 16 hours with no reply, I decided that this was probably long enough to wait before I should be able to post the question in another thread, without fear of being admonished for wasting people's time on such a newbie question. Granted, not everybody checks the times and dates of when such threads are initiated before they attempt to admonish them, or joke about it, or sensationalize it, just for the sake of calling it to more people's attention, or possibly trying to gain brownie points by calling it to the right people's attention.

Nevertheless, I hope you actually got something out of the time that it took for you read this.
 
Old 08-19-2006, 05:34 AM   #12
pixellany
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Quote:
Originally Posted by agentchange
Note to all viewers! Since people keep calling so much attention to the fact that I have two, I repeat, TWO threads running with exactly the same content, I feel inclined to explain myself, and remind you all, once again, that I have TWO threads running at the same time! With the exact same content! In two different forums!

After waiting 16 hours with no reply, I decided that this was probably long enough to wait before I should be able to post the question in another thread, without fear of being admonished for wasting people's time on such a newbie question. Granted, not everybody checks the times and dates of when such threads are initiated before they attempt to admonish them, or joke about it, or sensationalize it, just for the sake of calling it to more people's attention, or possibly trying to gain brownie points by calling it to the right people's attention.

Nevertheless, I hope you actually got something out of the time that it took for you read this.
First, 16 hours is not very long to wait here.
Second, posting duplicate threads is not allowed.
Third, you were a bit slow to absorb the truism that optical media is read-only. How much time did that waste???

we are here to help--I would suggest getting the chip off your shoulder. Yes, you will get razzed on occassion, but you will also get copious and largely very patient and thorough help.
 
  


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