| View previous topic :: View next topic |
| Author |
Message |
GivePeaceAChance
Guru
Joined: 26 May 2007
Posts: 480
|
 Posted: Wed Jan 02, 2008 2:01 am Post subject: /dev/cdrom : can't read superblock |
 |
|
When I inserted an audio CD, nothing showed up in the folder where it's mounted. I tried to unmount it and mount it again and I got this error when mounting:
| Code: | # mount /dev/cdrom /media/CD-ROM/
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: /dev/cdrom: can't read superblock |
What's strange is that using k3b, I can rip the music from the CD just fine.
_________________
I am not a Linux Guru, but a n00b with a lot of questions.  |
|
| Back to top |
|
 |
SinoTech
Advocate
Joined: 20 Mar 2004
Posts: 2579
Location: Neunkirchen / Saarland / Germany
|
| Posted: Wed Jan 02, 2008 3:20 am Post subject: |
|
|
You can not mount an audio CD, because it does not have a filesystem. So applications showing you the content of an audio CD, access the CD directly instead through filesystem driver.
Cheers,
Sino
_________________
Help to answer the unanswered |
|
| Back to top |
|
|
GivePeaceAChance
Guru
Joined: 26 May 2007
Posts: 480
|
| Posted: Wed Jan 02, 2008 3:29 am Post subject: |
|
|
So does that mean I can *never* see the contents of an audio CD through a file manager like Thunar? or through the commandline? Even in Audacious, nothing shows up in the folder where the CD contents should be.... that, at least, should be fixed.
_________________
I am not a Linux Guru, but a n00b with a lot of questions. |
|
| Back to top |
|
|
SinoTech
Advocate
Joined: 20 Mar 2004
Posts: 2579
Location: Neunkirchen / Saarland / Germany
|
| Posted: Wed Jan 02, 2008 4:00 am Post subject: |
|
|
| GivePeaceAChance wrote: | So does that mean I can *never* see the contents of an audio CD through a file manager like Thunar? [...]
|
Yes and no. Think some filemanagers support raw access to audio CD's and hence give you access to them similiar to mounted partitions (e.g. konqueror). Another way would be to use third party applications/drivers such as "cdfs" (never tried this, but as far as I know it allows you to mount audio CD's. See http://trappist.elis.ugent.be/~mronsse/cdfs/).
However, in general an audio CD does not have a filesystem and hence is accessed directly instead of mounted as other devices.
Cheers,
Sino
_________________
Help to answer the unanswered |
|
| Back to top |
|
|
GivePeaceAChance
Guru
Joined: 26 May 2007
Posts: 480
|
| Posted: Wed Jan 02, 2008 4:50 am Post subject: |
|
|
Hi,
I emerged cdfs and made sure I hate the loopback stuff in my kernel, but even after restarting my box (it's not needed, I know), I still get the same error when trying to mount the audio cd. :S
_________________
I am not a Linux Guru, but a n00b with a lot of questions. |
|
| Back to top |
|
|
SinoTech
Advocate
Joined: 20 Mar 2004
Posts: 2579
Location: Neunkirchen / Saarland / Germany
|
| Posted: Wed Jan 02, 2008 11:04 pm Post subject: |
|
|
| GivePeaceAChance wrote: | Hi,
I emerged cdfs and made sure I hate the loopback stuff in my kernel, but even after restarting my box (it's not needed, I know), I still get the same error when trying to mount the audio cd. :S |
Did you specify "cdfs" as filesystem when mounting the device? Sorry, but I never used CDFS on my own, so the only things I can tell you is what's already written on the website I mentioned above  .
Cheers,
Sino
_________________
Help to answer the unanswered |
|
| Back to top |
|
|
GivePeaceAChance
Guru
Joined: 26 May 2007
Posts: 480
|
| Posted: Thu Jan 03, 2008 1:39 am Post subject: |
|
|
Hi,
I checked out the website, and tried this:
| Code: | # mount -t cdfs -o ro /dev/cdrom /media/CD-ROM/
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
GentooHost gimli87 # dmesg | tail
cdfs 2.6.19 loaded.
ioctl(CDROMREADTOCHDR) failed
cdfs_toc_read failed
ioctl(CDROMREADTOCHDR) failed
cdfs_toc_read failed
|
And here's what I found on the internet about it. I'm not sure how to fix the error though:
| Quote: |
GET TOC HEADER
// reads beginning and ending tracks of cd // FROM TRACK 1
struct cdrom_tochdr
{
u_char cdth_trk0; /* start track */
u_char cdth_trk1; /* end track */
};
ioctl(cd_fd,CDROMREADTOCHDR,&tochdr);
A pure data cd will return 1:1
Returns:
-EFAULT invalid tochdr struct
-EIO cdrom_read_toc failed.
|
_________________
I am not a Linux Guru, but a n00b with a lot of questions. |
|
| Back to top |
|
|
|
Multimedia
