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 Forum index » House Training » Bugs ( Submit bugs )
Puppy can't use a DVD-RAM?
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octonysa

Joined: 24 Jan 2012
Posts: 2

PostPosted: Tue 24 Jan 2012, 21:20    Post subject:  Puppy can't use a DVD-RAM?
Subject description: DVD-RAM will not mount or play data files
 

I'm using both Slacko 5.3.1 Black Beauty and Lucid 5.2.8 and neither one will play a data file from my DVD I have no problem with audio or burning ISO files. I have a Compaq Presario Model cq 5000 with a AMD 170 u cpu at 2Ghz with 8 Gb of ram on a Foxcon amd 3+ MB with a 760 chip set and a 500 GB HD. The DVD is a HP DVD- RAM GH 60L . The drive mounter lists it as a sr0 iso9660.
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11062
Location: Arizona USA

PostPosted: Tue 24 Jan 2012, 22:54    Post subject:  

As far as I know, Linux cannot read a DVD-RAM. Sad

Or did you mean the drive says DVD-RAM on it and you tried to read a regular DVD (say, a DVD-R or DVD+R)?
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octonysa

Joined: 24 Jan 2012
Posts: 2

PostPosted: Wed 25 Jan 2012, 00:36    Post subject:  

Thank you for your answer. It does not work in Ubuntu 11.10 either. Now I know why.
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Karl Godt


Joined: 20 Jun 2010
Posts: 3972
Location: Kiel,Germany

PostPosted: Wed 25 Jan 2012, 01:47    Post subject:  

Quote:
As far as I know, Linux cannot read a DVD-RAM.


Look at

http://en.wikipedia.org/wiki/DVD-RAM#Compatibility

It says it can be udf formatted ..

*

Look further down the page for

Puppy 528 can't read DVD data disk made by Windows

Wink
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8-bit


Joined: 03 Apr 2007
Posts: 3368
Location: Oregon

PostPosted: Wed 25 Jan 2012, 04:35    Post subject:  

Karl, I have been there and used some of your exelent information to access data on a DVD+ r/w that vista formatted by default as UDF.
I would like to see your work progress to the point of where I could access an optical disk just by clicking on it and the underlying software deciding if the optical disk was 9660 or udf format and applying the correct code to mount it.
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Karl Godt


Joined: 20 Jun 2010
Posts: 3972
Location: Kiel,Germany

PostPosted: Wed 25 Jan 2012, 09:03    Post subject:  

8-bit :

Today just yet i got smsd,gsmsmsd AND vodafone-mobile-connect-card-driver-for-linux working after 3 month trying around .. :proud:
Very Happy

It seems to miss two or three pythons but works .. posting from it now on Puppy511 .. :proud:

There are several files involved and i would need to boot frugal pfix=ram to make a clean package .. for i am a full install freak ..

I will see what i can do , but it might take a week and a testing cycle for my typsos Very Happy
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11062
Location: Arizona USA

PostPosted: Wed 25 Jan 2012, 09:11    Post subject:  

Is it possible that Puppy's kernel needs to be compiled with DVD-RAM support built in? I wouldn't know how to check.
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Karl Godt


Joined: 20 Jun 2010
Posts: 3972
Location: Kiel,Germany

PostPosted: Wed 25 Jan 2012, 11:40    Post subject:  

Quote:
A few days ago Puppy 5 was released, using a recent Linux kernel that, if the response above is correct, should natively support UDF. If that's true, then the issue is not of UDF, but of support for DVD-RAM.

I tested three brands of DVD-RAM disks, 3x and 5x, both blank and formated and written to (by SLAX 6.1.2) in UDF 1.5 format. Puppy 5 was unable to mount any of the disks, and its chief burn utility Pburn appears equally unable to do anything with a blank DVD-RAM disk.


Quote:
Starting from kernel 2.6.26, Linux fully supports all versions of UDF, so simply make sure that you are using a recent distribution and you should be alright.


http://linuxexchange.org/questions/283/udfdla-support-in-linux


Code:
modprobe -l |grep udf

bash-3.00#
Code:
grep UDF /etc/modules/*

Quote:
/etc/modules/DOTconfig-k2.6.33.2-27MAY2010-LUPU-SMP-TICKLESS:CONFIG_UDF_FS=m
/etc/modules/DOTconfig-k2.6.33.2-27MAY2010-LUPU-SMP-TICKLESS:CONFIG_UDF_NLS=y

So the lupu kernel is configured with udf support as module and mount-FULL should autoload it

For now the CLI in puppy is your best friend mounting DVDs formatted other than iso9660 .
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11062
Location: Arizona USA

PostPosted: Wed 25 Jan 2012, 12:17    Post subject:  

I think maybe the problem is not the way the DVD-RAM is formatted but the fact that it's a DVD-RAM. I have several drives which claim they can read and write DVD-RAMs but Puppy couldn't do it. I only tried once, and returned the DVD-RAM for a refund after I discovered I couldn't use it.
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Karl Godt


Joined: 20 Jun 2010
Posts: 3972
Location: Kiel,Germany

PostPosted: Wed 25 Jan 2012, 13:40    Post subject:  

It seems that DVD-RAM can even be formatted with NTFS ..
Maybe even with EXT2 ..

Maybe Gparted can do this running without the filtering puppy shell script ..

I have no burner , so can not confirm this .

mkfs.ext2 /dev/sr0 in case sr0 is the burner would be interesting to try .
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LateAdopter

Joined: 27 May 2011
Posts: 150
Location: Reading UK

PostPosted: Wed 25 Jan 2012, 15:43    Post subject:  

I have just tried Lupu528 with one of my DVD-RAM disks and it failed to mount.

To work around this I added a line to /etc/fstab to specify a mount point and a filesystem for /dev/sr0

I put /mnt/dvd as the mount point since it already exists

udf as filesystem

rw

Having rebooted. looking in /mnt the folder dvd now has a grey dot. Clicking the folder successfully mounted the DVD-RAM disk and the video on it would play correctly.

Note: the puppy mounter still failed to mount the disk

So Lupu 528 is capable of mounting and using a DVD-RAM

My entry in fstab was:

/dev/sr0 /mnt/dvd udf rw 0 0


Since am a beginner it is likely that this will break something else.

Perhaps an expert could advise what a complete fstab entry should look like!
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Karl Godt


Joined: 20 Jun 2010
Posts: 3972
Location: Kiel,Germany

PostPosted: Wed 25 Jan 2012, 15:54    Post subject:  

fstab is pretty old ..

fstab is static , not dynamic .

Putting anything else into it would not simply mount : wrong filesystem type .
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tony

Joined: 14 Jan 2006
Posts: 316
Location: Montreal.ca

PostPosted: Wed 25 Jan 2012, 16:22    Post subject:
Subject description: udftools
 

Hi,

after a lot of googling I downloaded udftools from the package manager.

Added this line to /etc/fstab :-

xxxxx /dev/sr0 /mnt/dvd ext2,udf,iso9660 noatime,noauto,users,rw xxxxxxxxxxxxx

Sorry that should be :-

/dev/sr0 /mnt/dvd ext2,udf,iso9660 noatime,noauto,users,rw 0 0

As I did not want the old format on the disk I formated the dvdram using :- mkudffs /dev/sr0

mounted sr0 from rxvt console :- mount /dev/sr0

Then read and write from /mnt/dvd

Make sure that your dvd burner can handle dvd-ram disks

also that you have read /write permissions.

This worked for me in puppy lupu 528

Regards Tony

Last edited by tony on Wed 25 Jan 2012, 17:05; edited 1 time in total
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LateAdopter

Joined: 27 May 2011
Posts: 150
Location: Reading UK

PostPosted: Wed 25 Jan 2012, 16:44    Post subject:  

tony

Do you know whether udftools have a method for setting/clearing the DVD-RAM write protect status?
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tony

Joined: 14 Jan 2006
Posts: 316
Location: Montreal.ca

PostPosted: Wed 25 Jan 2012, 17:18    Post subject:  

Hi late adopter,

I just found my /etc/fstab entry should've had a couple of zeroes at the end.

/dev/sr0 /mnt/dvd ext2,udf,iso9660 noatime,noauto,users,rw 0 0

this might be the problem.

udftools can reformat the disk. My disks were also read only before I reformatted them.

I would guess that read/write permissions would have to be handled by linux commands using rxvt console.

Maybe a puppy guru could step in and help.

Regards Tony.
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