Date: Wed, 08 Dec 2004 21:21:02 +0900 From: Rob <spamrefuse@yahoo.com> To: FreeBSD <freebsd-questions@freebsd.org> Subject: Harddisk speed: PIO4 vs. UDMA66 controller ? Message-ID: <41B6F1AE.3000906@yahoo.com>
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Hi, I have a PII PC running 5.3. The output of 'dmesg' has a line: atapci0: <VIA 82C596B UDMA66 controller> [...] at device 7.1 on pci0 And at the end, it says: ad0: 43979MB <IBM-DTLA-307045/TX6OA50C> [89355/16/63] at ata0-master PIO4 acd0: CDROM <CRD-8520B/1.00> at ata1-master PIO4 The harddisk is very new and can do UDMA100. With a UDMA66 controller I expect the harddisk to operate at least at 66 MB/sec. Any ideas why the speed is only PIO4? Having a UDMA100 harddisk, working at PIO4 is too much of a pity, but 66 MB/sec would be OK. Thanks, Rob.
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