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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!lll-winken.llnl.gov!hookup!news.mathworks.com!news.duke.edu!duke.cs.duke.edu!macbeth.cs.duke.edu!not-for-mail From: pusateri@macbeth.cs.duke.edu (Thomas Pusateri) Newsgroups: comp.unix.bsd.freebsd.misc Subject: EIDE LBA Mode and PIO 3 Date: 6 Nov 1995 13:57:52 -0500 Organization: Duke University Department of Computer Science Lines: 22 Message-ID: <47llrg$s01@macbeth.cs.duke.edu> NNTP-Posting-Host: macbeth.cs.duke.edu Keywords: LBA IDE Does anyone know if the latest 2.1 snapshot will support LBA mode. I have an EIDE controller and my bios has a bunch of options like Logical Block Addressing (I have 1400 cyl), and different modes called Standard, Fast PIO 1, 2, and 3. The default mode for my disk is Fast PIO 3 which I have no idea what it means. The last time I tried to put the real disk parameters in my bios with a 2.0 snapshot, the disk geometry was translated from (1400 cyl,16 head, 63 blocks) to (700 cyl, 32 head, 63 blocks) and the wd driver croaked on it because it didn't support more than 32 heads. Since then, I have been faking out my DOS partition by setting the bios geometry to (1024, 16, 63) and letting FreeBSD figure out the real number of cylinders. I had hoped that Windows 95 would have fixed this but it appears to use the exact same braindead FDISK. It won't even show you what the translated geometry is! Out of curiosity, why can't vendors and Microsoft get together and fix the bios and OS to support more than 1024 cylinders? Thanks for any info, Tom