Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Slackware This Forum is for the discussion of Slackware Linux.


  Search this Thread
Old 02-08-2007, 05:57 PM   #1
Registered: Nov 2006
Posts: 56

Rep: Reputation: 15
rwcd mounts as read-only

I've been getting the error message when trying to mount a rwcd that it is write-protected and is mounted as read-only. The cd is empty. I'm able to erase it with cdrecord and, I assume I could also write to it.

I want to read and write to it like a floppy.

Help appreciated.
Old 02-08-2007, 06:00 PM   #2
Registered: Nov 2006
Posts: 56

Original Poster
Rep: Reputation: 15
I should add that I've been trying to backup my system and have created an iso image but am not sure how to create a bootable cd containing the image.

Any info appreciated.
Old 02-08-2007, 11:20 PM   #3
LQ Guru
Registered: Jan 2004
Location: NJ, USA
Distribution: Slackware, Debian
Posts: 5,852

Rep: Reputation: 357Reputation: 357Reputation: 357Reputation: 357
The issue here is that CD-RWs, while they are rewritable, are still mounted read-only by the system. You can only write to them with a burning program such as K3B, you can't mount them like a floppy or USB drive and arbitrarily copy files to it.
Old 02-08-2007, 11:36 PM   #4
LQ Guru
Registered: Oct 2005
Location: $RANDOM
Distribution: slackware64
Posts: 12,928
Blog Entries: 2

Rep: Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287Reputation: 1287
Originally Posted by somae
I want to read and write to it like a floppy.
Interesting idea ... not really possible ... at least with a regular CD-RW.

Hmmm ... it would be interesting to make such an interface. But, you'd probably need a multisession disk, and you would append to it when you wrote files to it. But, what happens if they exceed the holding capacity of the disk ? Then you'd have to wipe the disk and start over (there would be some type of check for this, so you don't waste time burning something that will fail). Technically it is possible, but it wouldn't be much faster than you doing it with a burning program, and you'd need a multisession disk.
Old 02-08-2007, 11:38 PM   #5
LQ Guru
Registered: Dec 2006
Location: underground
Distribution: Slackware64
Posts: 7,594

Rep: Reputation: 551Reputation: 551Reputation: 551Reputation: 551Reputation: 551Reputation: 551
That IS unfortunate. I have the same situation but hadn't gotten around to asking yet, but did come to the same conclusion. I have an RW disc formatted like a floppy with FAT-32, but can only use it as such with Windoze, which I no longer have installed
Hopefully there's a linux burner as simple, effective and efficient as Infra-Recorder, for making bootable ISO's. I haven't tried burning discs yet under linux, but did pull my hair for a while figuring out the un-writeable re-writeable issue..
Old 02-10-2007, 03:15 PM   #6
Senior Member
Registered: Oct 2005
Location: Lithuania
Distribution: Hybrid
Posts: 2,247

Rep: Reputation: 53
You can't directly write to cd, because standalone files cannot be removed from cd, so it can't work as floppy or usb.

To mount use this
mount /dev/cdrom (as well can be /dev/hdc or /dev/hda and so on) /mnt/cdrom (where cdrom is directory in mnt) -t vfat. If vfat doesn't work, try msdos instead. And k3b is a great burner.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
NTFS mounts; but I can't read it JulienPDX Linux - Newbie 13 07-02-2006 03:03 PM
nfs mounts read permissions Tinku Linux - General 5 01-26-2006 01:54 AM
CDRom mounts OK but has read problems... pracslipkerm Linux - Newbie 3 05-15-2005 01:48 AM
FAT mounts read-only jogurt666 Linux - General 3 02-12-2004 06:13 AM
Bad FAT... re-mounts to read only. sourceman Linux - General 1 02-11-2002 11:10 AM > Forums > Linux Forums > Linux - Distributions > Slackware

All times are GMT -5. The time now is 07:50 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration