Re: non-ATA66 cable?
On Mon, 23 Oct 2006, David Kelly wrote: As for the cable on backwards, its keyed with a tab on the outside perimeter and inside with a blocked hole or two. Should be very hard to install incorrectly. They were talking about the wrong connector going to the drive, not the connector being miskeyed. 80-wire ATA cables should have a blue, gray, and black connector, which should go to motherboard, slave, and master respectively. -Warren Block * Rapid City, South Dakota USA ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
> As for the cable on backwards, its keyed with a tab on the outside > perimeter and inside with a blocked hole or two. Should be very > hard to install incorrectly ... Backwards => drive end to motherboard, motherboard end to drive. Very easy to do if using only one drive, and the keying may not prevent it. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
On Mon, Oct 23, 2006 at 04:22:35PM +1300, Juha Saarinen wrote: > >Assuming you have the right cable, make sure you have it connected > >correctly. I had a problem like this once, and it turned out that I > >had put the cable on backwards. I had connected the end of the cable > >meant for the motherboard to the device (a disk, iirc), and visa-versa. > > > >I switched the cable around, and then it worked fine. Of course, I > >didn't discover this until after a few years, while I was in the > >process of replacing that PC! > > ! > > That made me go and check my machines here... Mentioned earlier that the problem has been resolved as "operator error". That my device is not capable of more than 33 MB/sec. That it "only" writes at 8x which is roughly 11 MB/sec. The reason for my investigation is that the drive spins at different rates (as measured by ear) during a burn. Probably ought to make sure DMA and all that good stuff is enabled as well. IIRC DMA or something similar was disabled by default for optical drives due to the number of broken devices claiming to support it. As for the cable on backwards, its keyed with a tab on the outside perimeter and inside with a blocked hole or two. Should be very hard to install incorrectly. Back in the bad old days of floppy drives it was common for a floppy to not have a shroud around the pins making it easy to install the cable off by one or more. Also the "key" for the connector was often a notch in the PCB, so it was easy to put the cable on upside down. -- David Kelly N4HHE, [EMAIL PROTECTED] Whom computers would destroy, they must first drive mad. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
Assuming you have the right cable, make sure you have it connected correctly. I had a problem like this once, and it turned out that I had put the cable on backwards. I had connected the end of the cable meant for the motherboard to the device (a disk, iirc), and visa-versa. I switched the cable around, and then it worked fine. Of course, I didn't discover this until after a few years, while I was in the process of replacing that PC! ! That made me go and check my machines here... -- Juha ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
At 9:15 PM -0500 10/21/06, David Kelly wrote: Dell PowerEdge 400SC, 6.2-PRERELEASE (altho this is an old issue) dmesg says: acd0: DMA limited to UDMA33, controller found non-ATA66 cable acd0: DVDR at ata1-master UDMA33 cd0: 33.000MB/s transfers The controller is properly probed as, "atapci0: " This DVD isn't writing discs as fast as other brands on other machines and OS's (such as MacOS X). Lite-On has a newer firmware that I have not tried. Well, first the obvious question: What kind of cable do you have it hooked up with? Assuming you have the right cable, make sure you have it connected correctly. I had a problem like this once, and it turned out that I had put the cable on backwards. I had connected the end of the cable meant for the motherboard to the device (a disk, iirc), and visa-versa. I switched the cable around, and then it worked fine. Of course, I didn't discover this until after a few years, while I was in the process of replacing that PC! -- Garance Alistair Drosehn= [EMAIL PROTECTED] Senior Systems Programmer or [EMAIL PROTECTED] Rensselaer Polytechnic Instituteor [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
On Oct 21, 2006, at 11:57 PM, Josh Paetzel wrote: Lite-On says "Supported transfer mode : PIO mode 4, DMA mode 2 and Ultra DMA mode 2", so is there something I should do to my FreeBSD to make this device happier? Try a different cable? It's not going to come up faster than UDMA33and even if it did UDMA33 is far faster than a DVD burner. Duh! My goof. I see that now. UDMA 2 is 33 Mbytes/sec. It is doing what Lite-On says it will do. :-( What sort of write performance are you getting? growisofs peaks at 7.9x but averages 3.9. Buffers stay at 100% but for a rare 99%. Generally see 5 MB/sec using "systat -v". My concern is during writes the drive sound varies, presumably the disc speed as well. Discs verify and play correctly after. Maybe I shouldn't worry. I haven't found any better way to verify a burned image than "cmp /dev/dvd image.iso". Open to suggestions. When successful this method reports "EOF on image.iso" as apparently there is more data on the dvd. The original image is a multiple of 2048, so its not that. The Apple-labeled PIONEER DVD-RW DVR-111D in my Mac Pro (its sweet!) screams at 16x under MacOS X. One constant note during the entire burn. Seems to verify at 8x. Same media as used in the Lite-On. Will have to pull the Lite-On and put it in a Windows machine if I am to flash the firmware to the latest. -- David Kelly N4HHE, [EMAIL PROTECTED] Whom computers would destroy, they must first drive mad. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
On Saturday 21 October 2006 23:46, Juha Saarinen wrote: > On 10/22/06, David Kelly <[EMAIL PROTECTED]> wrote: > > Dell PowerEdge 400SC, 6.2-PRERELEASE (altho this is an old issue) > > > > dmesg says: > > > > acd0: DMA limited to UDMA33, controller found non-ATA66 cable > > acd0: DVDR at ata1-master UDMA33 > > cd0: 33.000MB/s transfers > > > > The controller is properly probed as, "atapci0: > UDMA100 controller>" > > > > This DVD isn't writing discs as fast as other brands on other > > machines and OS's (such as MacOS X). Lite-On has a newer firmware > > that I have not tried. But first was checking for any sort of > > errors or irregularities and came across this mismatch. > > > > Lite-On says "Supported transfer mode : PIO mode 4, DMA mode 2 > > and Ultra DMA mode 2", so is there something I should do to my > > FreeBSD to make this device happier? > > Try a different cable? It's not going to come up faster than UDMA33and even if it did UDMA33 is far faster than a DVD burner. What sort of write performance are you getting? -- Thanks, Josh Paetzel ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: non-ATA66 cable?
On 10/22/06, David Kelly <[EMAIL PROTECTED]> wrote: Dell PowerEdge 400SC, 6.2-PRERELEASE (altho this is an old issue) dmesg says: acd0: DMA limited to UDMA33, controller found non-ATA66 cable acd0: DVDR at ata1-master UDMA33 cd0: 33.000MB/s transfers The controller is properly probed as, "atapci0: " This DVD isn't writing discs as fast as other brands on other machines and OS's (such as MacOS X). Lite-On has a newer firmware that I have not tried. But first was checking for any sort of errors or irregularities and came across this mismatch. Lite-On says "Supported transfer mode : PIO mode 4, DMA mode 2 and Ultra DMA mode 2", so is there something I should do to my FreeBSD to make this device happier? Try a different cable? -- Juha ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
