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Old 12-28-2005, 05:24 PM   #1
IamI
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Registered: Mar 2004
Location: Dreary, Pennsylvania USA
Distribution: Slackware 10.2
Posts: 77

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DVD-R Mounting Problem - Located Explanation, Request Workaround


I'm trying to copy a bunch of stuff into Slack from a DVD-R burned (and working) in XP. All attempts to mount the disk in Slack (10.2) result in:

Mount: Not A Directory

After some searching, I think I have found a likely reason for the problem here:

http://lists.debian.org/cdwrite/2005/04/msg00058.html

Practical upshot quoted from the above listing:
Code:
The problem is that streaming data into mkisofs forces it to put the
directory structure at the end of the burn because it does not know
how large the file it is creating will be until it consumes the entire
pipe, and the size of the file is one of the things the directory
structure holds.

The error you are seeing is because linux kernels prior to 2.6.8.1
have an inode scheme that wraps around at 4 GB.  So, if you tell
mkisofs to put the directory structure at 4.1 GB, linux looks at the
block at 0.1 GB instead of the one at 4.1 GB.  Unsurprisingly, linux
cannot find the directory structure at 0.1 GB.  Kernels after 2.6.8.1
wrap at 128 GB which solves the problem for the current and (probably)
next several generations of media.

The trouble is that I have no idea what to do about it except compile a 2.6 kernel, which seems like overkill in this instance. Can somebody suggest a workaround?

P.S: The drive in question mounts other media without complaint.

Last edited by IamI; 12-28-2005 at 05:35 PM.
 
Old 12-29-2005, 10:09 AM   #2
dunric
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Registered: Jul 2004
Distribution: Void Linux, former Slackware
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Quote:
The trouble is that I have no idea what to do about it except compile a 2.6 kernel, which seems like overkill in this instance. Can somebody suggest a workaround?
If the problem/bug is fixed in recent 2.6 kernel versions, I'd suggest to install one of them beside the current one and configure boot loader to be able to switch between them. And no, you very probably won't need to build your custom kernel - just look into directory testing - for Slack 10.2 there are packages of kernel ver. 2.6.13.
 
  


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