Date: Sun, 20 Sep 2009 13:35:58 -0700 (PDT) From: Richard Mahlerwein <mahlerrd@yahoo.com> To: stable@freebsd.org Subject: Re: What happened to DVD writing? Message-ID: <673698.21068.qm@web51004.mail.re2.yahoo.com> In-Reply-To: <alpine.BSF.2.00.0909201250190.99625@wonkity.com>
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>From: Warren Block <wblock@wonkity.com> >Subject: Re: What happened to DVD writing? >Date: Sunday, September 20, 2009, 2:58 PM >>On Sun, 20 Sep 2009, Zaphod Beeblebrox wrote: >>> >>> FreeBSD lightning 7.2-STABLE FreeBSD 7.2-STABLE #0: Sun Sep 20 07:25:58= MDT >>> 2009=A0 =A0 =A0 root@lightning:/usr/obj/usr/src/sys/LIGHTNING=A0 i386 >>> >>> Now growisofs starts, but appears to never manage to write to the DVD. = It's >>> a DVD-R, one from the same batch that has worked before: >>> >>>=A0 0.77% done, estimate finish Sun Sep 20 07:55:57 2009 >>> >>> and there it stops.=A0 Rebooting is needed, and the machine can't quite= bring >>> itself to shut down after syncing buffers.=A0 /var/log/messages: >>> >> Another possibility is that the drive is worn out.=A0 DVD writers have a >> limited lifespan largely measured by the number of disks they cut. > >This drive has probably written under 50 DVDs, all ISOs used for backup.= =20 >It's a Lite-On DH-20A4P bought in August 2008.=A0 It's looking like the=20 >drive itself has failed.=A0 Which seems odd, since I thought it could=20 >still burn CDs. I have had several exhibit behavior even more odd. The most unusual was this particular CD writer... It read both DVDs and CDs= but would write neither (it had worked fine the week before).=A0 I took it= out of the drive bay and hooked it to another PC to test and it worked fin= e there.=A0 I put it back in the original PC and it failed.=A0 I was swappi= ng things around on that PC (assuming bad cable, bad power, etc) and had it= sitting loose on the desk and found that it now worked again.=A0 Put it ba= ck in the drive cage and it again would not write, though reading was fine.= =A0 Anyway, I finally figured out that even slight pressure in on the sides= where it mounts would make it fail to burn CDs.=A0 The cage itself exerted= a bit of pressure and that was enough to make it fail at any attempt to bu= rn a CD. -Rich =0A=0A=0A
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