Alan, You're right :-) The dmesg parts I could collect are: ata4: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14 ata5: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15 ata4.00: ATAPI: MATSHITADVD-RAM UJ870PC, 1.00, max UDMA/33 ata4.00: configured for UDMA/33 ata5: port disabled. ignoring. scsi 3:0:0:0: CD-ROM MATSHITA DVD-RAM UJ870PC 1.00 PQ: 0 ANSI: 5 sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray Uniform CD-ROM driver Revision: 3.20 sr 3:0:0:0: Attached scsi CD-ROM sr0 sr 3:0:0:0: Attached scsi generic sg1 type 5 ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata4.00: ST_FIRST: !(DRQ|ERR|DF) ata4.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res 10/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation) ata4: soft resetting link ata4.00: model number mismatch 'MATSHITADVD-RAM UJ870PC' != 'MATSHITADVDmRAM`UJ8w0PC` ` ` ` ` ` ` ` `' ata4.00: revalidation failed (errno=-19) ata4: soft resetting link ata4.00: configured for UDMA/33 ata4: EH complete ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata4.00: ST_FIRST: !(DRQ|ERR|DF) ata4.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res 10/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation) ata4: soft resetting link ata4.00: model number mismatch 'MATSHITADVD-RAM UJ870PC' != 'MATSHITADVDmRAM`UJ8w0PC` ` ` ` ` ` ` ` `' ata4.00: revalidation failed (errno=-19) ata4: soft resetting link ata4.00: model number mismatch 'MATSHITADVD-RAM UJ870PC' != 'MATSHITADVDmRAM`UJ8w0PC` ` ` ` ` ` ` ` `' ata4.00: revalidation failed (errno=-19) ata4.00: disabled ata4: EH complete Attached is the complete dmesg output. I'll be glad to give more details, just let me know what is needed and how I can provide it :-) BTW, I upgraded from a fully updated Fedora9 to Fedora10 with the DVD (x86), and then update Fedora10. Thanks, Olivier <div class="gmail_quote">2009/6/9 Alan Cox <<a href="mailto:alan@lxorguk.ukuu.org.uk" target="_blank">alan@lxorguk.ukuu.org.uk</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div>On Tue, 9 Jun 2009 18:12:43 +0200 Olivier Robert <<a href="mailto:robby57@gmail.com" target="_blank">robby57@gmail.com</a>> wrote: > Hi, > > I'm facing a weird issue with /dev/sr0. It disappeared after the upgrade > from f9 to f10. </div>To quote The Prisoner "We need information" .... The relevant bits from dmesg after boot, the type of controllers and CD-ROM etc would make it rather easier to guess further. Alan -- fedora-list mailing list <a href="mailto:fedora-list@redhat.com" target="_blank">fedora-list@redhat.com</a> To unsubscribe: <a href="https://www.redhat.com/mailman/listinfo/fedora-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-list</a> Guidelines: <a href="http://fedoraproject.org/wiki/Communicate/MailingListGuidelines" target="_blank">http://fedoraproject.org/wiki/Communicate/MailingListGuidelines</a> </blockquote></div>