Re: access beyond end of device errors in 2.2.13pre18 AND 2.2.5

Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 26 Oct 1999 22:10:54 +0100 (BST)


> Turning OFF DMA on my WDC __IMMEDIATELY__ removed this problem (attempting to access beyond end of
> device). However, I now suffer from slower disk access. I'm using 2.2.6 - 2.2.12. Never had this
> problem with 2.0.3x.

There are several things you should do here. Firstly go for a dig on the WDC
site. Some of the older WD drives have DMA errata. They also have a firmware
fix available. Also check your cabling. DMA modes don't do any kind of checksum
protection unlike UDMA so a cable problem could show up this way

Alan

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