Date: Fri, 7 Aug 1998 08:41:55 +0930 From: Greg Lehey <grog@lemis.com> To: Bruce Evans <bde@zeta.org.au>, ks@itp.ac.ru, mike@smith.net.au Cc: hardware@FreeBSD.ORG Subject: Re: IBM 16 GB IDE HDD Message-ID: <19980807084155.H9620@freebie.lemis.com> In-Reply-To: <199808061055.UAA12694@godzilla.zeta.org.au>; from Bruce Evans on Thu, Aug 06, 1998 at 08:55:56PM %2B1000 References: <199808061055.UAA12694@godzilla.zeta.org.au>
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On Thursday, 6 August 1998 at 20:55:56 +1000, Bruce Evans wrote: >>>>> how can I use the full capacity of my IBM DTTA-351680 16GB IDE drive? >>>>> "wd" driver can see only 8GB, and manual drive geometry installation >>>>> in fdisk did not change it - my FreeBSD-3.0-980311 can see only 8GB. >>>> >>>> See the 'wd' manpage for the option to use LBA addressing for disks > 8GB. >>> >>> There are nothing about it. >> >> You're obviously more out of date than I thought. From a more recent >> wd.4: >> 0x1000 Use LBA addressing instead of the default CHS addressing. > > This is seriously incomplete and out of date. LBA addressing should almost > never be used, since no cases are known where it is necessary, and cases > are known where it causes trashed disks (dumping to any drive where the > default geometry is not the same as the fake LBA geometry). What am I missing here? I thought LBA meant "logical block addressing". Where does "geometry" (by which I understand bogus mapping to cylinder/head/sector values) come into it? Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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