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Thanks Michael, automount was indeed the problem.<br>
Ive run the validation however it fails with when using 'readom' and
passes with the 'dd' script (output in previous forum link). readom
does seem to use less cpu though. <br>
<br>
<small><small><font face="Courier New, Courier, monospace">[12:40][root@localhost:/home/me/Scripts]$
readom dev=/dev/cdrom
f=/home/hug/Scripts/Fedora-15-i386-DVD.iso<br>
Read speed: 11080 kB/s (CD 62x, DVD 8x).<br>
Write speed: 22160 kB/s (CD 125x, DVD 16x).<br>
Capacity: 1782464 Blocks = 3564928 kBytes = 3481 MBytes = 3650
prMB<br>
Sectorsize: 2048 Bytes<br>
Copy from SCSI (1,0,0) disk to file
'/home/hug/Scripts/Fedora-15-i386-DVD.iso'<br>
end: 1782464<br>
addr: 1782464 cnt: 64<br>
Time total: 483.996sec<br>
Read 3564928.00 kB at 7365.6 kB/sec.<br>
[12:49][root@localhost:/home/me/Scripts]$ sha256sum -c
*-CHECKSUM<br>
Fedora-15-i386-DVD.iso: FAILED<br>
sha256sum: Fedora-15-i386-netinst.iso: No such file or
directory<br>
Fedora-15-i386-netinst.iso: FAILED open or read<br>
sha256sum: WARNING: 1 of 2 listed files could not be read<br>
sha256sum: WARNING: 1 of 1 computed checksum did NOT match</font></small></small><br>
<br>
The md5 checksum of the iso's created by the two methods are
different<br>
<small><small><font face="Courier New, Courier, monospace">[13:04][root@localhost:/home/me/Scripts]$
md5sum Fedora-15-i386-DVD.iso<br>
f2f94d2eed35530062b8a8c12c1de3d2 Fedora-15-i386-DVD.iso<br>
[13:06][root@localhost:/home/me/Scripts]$ cd ..<br>
[13:06][root@localhost:/home/me]$ md5sum
Fedora-15-i386-DVD.iso<br>
9a91492ac84dde9ceff0cb346a079487 Fedora-15-i386-DVD.iso<br>
</font></small></small><br>
Im not supprised i dont know why the two methods produce a different
result but i would have thought 'readom' was better suited to this
job. Please let me know if you have any ideas or spot anything ive
got wrong, Thanks<br>
<br>
On 06/29/2011 10:10 PM, Michael Dorrington wrote:
<blockquote cite="mid:4E0B94C7.1030402@gmail.com" type="cite">
<pre wrap="">On 29/06/11 13:44, Andrew wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Thanks for that Michael, im having problems geting readom to access the
dvd but have found another solution:
<a class="moz-txt-link-freetext" href="http://forums.fedoraforum.org/showthread.php?t=264694">http://forums.fedoraforum.org/showthread.php?t=264694</a>
the given script uses 'dd' with blocksize and blockcount options. Do you
think it be more approprate to replace 'dd' with 'readom' ?
[root@localhost Scripts]# readom dev=/dev/cdrom
f=/home/me/Scripts/fedora.iso
Error trying to open /dev/cdrom exclusively (Device or resource busy)...
retrying in 1 second.
</pre>
</blockquote>
<pre wrap="">
You need to unmount the media first. I suspect it has been automounted.
The GUI tools tend to eject rather then letting you just unmount the
media so as root do:
umount /dev/cdrom
Regards,
Mike.
</pre>
<pre wrap="">
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