Date: Mon, 17 May 1999 12:13:15 -0700 (PDT) From: Doug White <dwhite@resnet.uoregon.edu> To: Bradley Benson <brad@cyberix.com> Cc: freebsd-questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Max allowed size of IDE drives Message-ID: <Pine.BSF.4.03.9905171211100.15052-100000@resnet.uoregon.edu> In-Reply-To: <000801be9d60$2c92ec00$6400a8c0@brad.centralmhmr.org>
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On Thu, 13 May 1999, Bradley Benson wrote:
> I know the later 2.2.x releases didn't support IDE drives larger than 8GB.
> I'm under the assumption that this changed with 3.0, but I've had no luck
> finding information on the change. I believe 10GB IDE drives are now
> supported, and if so what about some of the newer 13GB and even 17GB
> drives? --Thanks
Support was added in April 1998.
Try setting flags '0xb0ffb0ff' on the wdc controller during the boot-ime
configuration.
From the wd(4) man page:
For each drive there are four bit-fields encoded in a 16 bit integer:
0x8000 Test and use the 32bit transfer capability of the drive.
0x4000 If drive looks like it's coming out of sleep mode, assume
it's confused and reinitialize it.
0x2000 Probe for and use the bus-mastering DMA capabilities of mod-
ern PCI chipsets.
0x1000 Use LBA addressing instead of the default CHS addressing.
0x0f00 Force number of heads to ((flags & 0xf00)>>8), recalculate
number of cylinders to match.
0x00ff Test and use multi-sector transfer mode of this drive, max
number of sectors attempted is (flags & 0x00ff).
Doug White
Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve
http://gladstone.uoregon.edu/~dwhite | www.freebsd.org
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