In article <420F907B.1090901_at_DeepCore.dk> Søren Schmidt <sos_at_DeepCore.dk> writes: > >>>2. A geometry translation for pc98 is NOT enough. > >>> > >>> Currently, it works only under 4.3GB disk. > > Wrong, ATA mk3 does solve the problem but using the "current" geomtry > set in the drives by the BIOS. However the code missed it in one place > in ata-lowlevel.c when the code was moved there from ata-disk.c. > This has been fixed and will be present in the next snapshot as I sadi > earlier. ATA-mkIII does NOT completely solve the problem. The word 54-58 of the IDENTIFY DEVICE parameter are valid only up to ATA/ATAPI-5. They are obsolete parameters in ATA/ATAPI-6 and later. So using them for a geometry translation has NO effect for recent disks. The following is the result when use SATA 200GB disk on pc98. It is clearly that recognizing a geometry fails. atapci0: <SiI 3114 SATA150 controller> port 0xc000-0xc00f,0x602c-0x602f,0x6030-0x6037,0x6028-0x602b,0x6020-0x6027 mem 0x20411000-0x204113ff irq 10 at device 17.0 on pci0 ad4: <ST3200822AS/3.01> ATA-6 disk at ata2-master ad4: 190782MB (390721968 sectors), 387621 C, 16 H, 63 S, 512 B ad4: 16 secs/int, 1 depth queue, SATA150 BIOS Geometries: 1:1778ffff 0..6008=6009 cylinders, 0..255=256 heads, 1..255=255 sectors --- TAKAHASHI Yoshihiro <nyan_at_jp.FreeBSD.org>Received on Tue Feb 15 2005 - 11:09:16 UTC
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