Harddisk UDMA ICRC error... from kernel at bootup. What does it mean?
Hi, A friend of mine switched from Windows XP to FreeBSD, because I garanteed that FreeBSD would be faster. I also want to optimize performance as much as possible. I'm therefore worried about the following messages from the kernel at bootup: [...snip...] ad0: 16448MB WDC WD172AA [33420/16/63] at ata0-master UDMA66 ad1: 76319MB WDC WD800JB-00CRA1 [155061/16/63] at ata0-slave UDMA66 acd0: CD-RW HL-DT-ST RW/DVD GCC-4320B at ata1-master PIO4 Mounting root from ufs:/dev/ad0s1a ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) falling back to PIO mode --- Both harddisks are on the same IDE 40-pin cable as master and slave. ad0 is the FreeBSD formatted harddisk; one slice and several FreeBSD partitions. ad1 is from a former Windows XP installation, with two partitions: ad1s5 (ntfs) and ad1s6 (msdos). I don't understand much of the lines above. The last line says it falls back to PIO mode due to errors with ad1s5c. What does that mean? Will it use the slow 16.6 MB/s data exchange from disk to host? Does this then also imply that both disks use PIO/slow data exchange speed? (remember: both disks are on the same cable to the motherboard). What can I do to get things better and faster? And also: is this UDMA ICRC error because it's a Windows/DOS partition? Would formatting to FreeBSD filesystem solve the problem? Thanks, Rob. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Harddisk UDMA ICRC error... from kernel at bootup. What does it mean?
Rob [EMAIL PROTECTED] wrote: Hi, A friend of mine switched from Windows XP to FreeBSD, because I garanteed that FreeBSD would be faster. I also want to optimize performance as much as possible. I'm therefore worried about the following messages from the kernel at bootup: [...snip...] ad0: 16448MB WDC WD172AA [33420/16/63] at ata0-master UDMA66 ad1: 76319MB WDC WD800JB-00CRA1 [155061/16/63] at ata0-slave UDMA66 acd0: CD-RW HL-DT-ST RW/DVD GCC-4320B at ata1-master PIO4 Mounting root from ufs:/dev/ad0s1a ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) falling back to PIO mode --- Both harddisks are on the same IDE 40-pin cable as master and slave. ad0 is the FreeBSD formatted harddisk; one slice and several FreeBSD partitions. ad1 is from a former Windows XP installation, with two partitions: ad1s5 (ntfs) and ad1s6 (msdos). I don't understand much of the lines above. Super-simplified: it's telling you it gets checksum erros when it tries to talk to the drives at ATA66 speed, so it slows down and is then successful. The last line says it falls back to PIO mode due to errors with ad1s5c. What does that mean? Will it use the slow 16.6 MB/s data exchange from disk to host? Yes. Windows is probably already running at this speed, but it just doesn't bother to inform you. Does this then also imply that both disks use PIO/slow data exchange speed? (remember: both disks are on the same cable to the motherboard). Yes. What can I do to get things better and faster? Get an 80 conductor cable (probably). And also: is this UDMA ICRC error because it's a Windows/DOS partition? Would formatting to FreeBSD filesystem solve the problem? No, it's more likely because of the 40 pin cable. -- Bill Moran Potential Technologies http://www.potentialtech.com ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Harddisk UDMA ICRC error... from kernel at bootup. What does it mean?
- Original Message - From: Bill Moran [EMAIL PROTECTED] To: Rob [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Wednesday, June 16, 2004 12:26 PM Subject: Re: Harddisk UDMA ICRC error... from kernel at bootup. What does it mean? | Rob [EMAIL PROTECTED] wrote: | Hi, | | A friend of mine switched from Windows XP to FreeBSD, because I garanteed that FreeBSD | would be faster. I also want to optimize performance as much as possible. I'm therefore | worried about the following messages from the kernel at bootup: | | [...snip...] | ad0: 16448MB WDC WD172AA [33420/16/63] at ata0-master UDMA66 | ad1: 76319MB WDC WD800JB-00CRA1 [155061/16/63] at ata0-slave UDMA66 | acd0: CD-RW HL-DT-ST RW/DVD GCC-4320B at ata1-master PIO4 | Mounting root from ufs:/dev/ad0s1a | ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying | ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying | ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) retrying | ad1s5c: UDMA ICRC error reading fsbn 93787664 of 46885768-46885895 (ad1s5 bn 93787664; cn 5838 tn 3 sn 5) falling back to PIO mode | | --- | | Both harddisks are on the same IDE 40-pin cable as master and slave. | ad0 is the FreeBSD formatted harddisk; one slice and several FreeBSD partitions. | ad1 is from a former Windows XP installation, with two partitions: ad1s5 (ntfs) and ad1s6 (msdos). | | I don't understand much of the lines above. | | Super-simplified: it's telling you it gets checksum erros when it tries to | talk to the drives at ATA66 speed, so it slows down and is then successful. | | The last line says it falls back to PIO mode due to errors with ad1s5c. | What does that mean? Will it use the slow 16.6 MB/s data exchange from disk to host? | | Yes. Windows is probably already running at this speed, but it just doesn't | bother to inform you. | | Does this then also imply that both disks use PIO/slow data exchange speed? | (remember: both disks are on the same cable to the motherboard). | | Yes. | | What can I do to get things better and faster? | | Get an 80 conductor cable (probably). Shouldn't they be able to use ATA33 on a 40 pin cable atleast? Try atacontrol? | | And also: is this UDMA ICRC error because it's a Windows/DOS partition? | Would formatting to FreeBSD filesystem solve the problem? | | No, it's more likely because of the 40 pin cable. | | -- | Bill Moran | Potential Technologies | http://www.potentialtech.com | ___ | [EMAIL PROTECTED] mailing list | http://lists.freebsd.org/mailman/listinfo/freebsd-questions | To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
