A while back I downloaded a large<div>amount of archival material, and</div><div>wrote it on to DVDs, using K3b.</div><div>The system was Kubuntu 9.04,</div><div>with an ext3 file system.</div><div><br></div><div>A year or so latter I go back to</div>
<div>restore some of it to a hard drive,</div><div>on a new machine, running Kubuntu</div><div>9.10, using ext4, and find that only </div><div>some of the DVDs will mount. About </div><div>25%.</div><div><br></div><div>I still have the original machine </div>
<div>around, so I tried mounting a couple</div><div>of the DVDs on it that won't mount</div><div>on the new system. Worked fine.</div><div><br></div><div>I used the mount command</div><div><br></div><div>mount -t iso9660 /dev/sr0 /directory.</div>
<div><br></div><div>I also tried mount -t iso9660 /dev/dvd /directory.</div><div><br></div><div>Apparently specifying iso9660 should</div><div>not really be necessary, given the </div><div>fstab entry for the cd/dvd unit, and </div>
<div>in principle can simply use </div><div><br></div><div>mount /dev/dvd</div><div><br></div><div>That would be fine if it worked...</div><div><br></div><div>On occasion I'll see "no medium found</div><div>on /dev/sr0," the dvd unit. Other times</div>
<div>I might see "can't read superblock," or </div><div>something thereabouts. I gather that</div><div>indicates that the file system type is not</div><div>correctly determined. But if I specify it,</div><div>
that should not be an issue.</div><div><br></div><div>Suggestions? Marginal DVD unit? </div><div><br></div><div> -- Bob</div><div><br></div>