On Monday, June 2, 2003, at 04:26 AM, Karl-Heinz Herrmann wrote:
Hi,
On 01-Jun-2003 Robert M. Reed wrote:I have a revision 1 blue and white G3 with a 6gb ATA hard drive. I've heard things about problems with drive corruption with large ATA hard drives. I'd like a bigger hard drive, but I'm worried about the corruption. So I've got some questions and I hope someone knows something. Is drive corruption still a problem with rev 1 B&W G3's under OSX? How big an ATA hd before there gets to be a drive corruption problem? Is the problem specific to particular brands of hd's?
friend of mine has a Rev 1 B&W G3 and upgraded the one HD to a 40GB IBM
drive a while back. There *were* problems and the little test utility (see
xlr8yourmac, G3 section) finds read problems. From the log-output I would
conclude: The IDE controller chip is buggy in reads, not writes (once written
the read errors move around and never repeat at the same location). The
error rate is something like 2 read errors (16-bit word?) per 2GB read.
This was under os9.2, but as the IDE controller is the problem and not the
software side driver I do not think OSX will help a lot.
I've got a SCSI card in it, but the price per gb of SCSI hard drives is ridiculous compared to ATA hard drives. With two video cards and a scsi card I'm down to my last PCI slot and I don't want to use it up with an ATA card.
There might be a possibility to reduce the ATA interface from UDMA to Multiword-dma which seems to cure the data corruption (see xlr8yourmac again). I don't know a tool to switch DMA settings on the Mac (I count myself into i386/Linux).
My friend will go for a ATA card -- in a few days I could tell the results
(remind me in a few days).
K.-H.
I have a B&W G3 rev.1 400MHz with 9 GB OEM HD. I put in a Sonnet Tempo ATA PCI card and then ran 2-40 GB IBM DeskStar HD from it. That way you avoid the G3 rev.1 IDE-extra drive hassle. HTH.
Eric
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