Andre Hedrick
The Linux IDE guy
On Tue, 7 Dec 1999, Khimenko Victor wrote:
> In <19991207182051.A17522@win.tue.nl> Guest section DW (dwguest@win.tue.nl) wrote:
> > On Sun, 5 Dec 1999, Kristofer T. Karas wrote:
>
> >> Wichert Akkerman wrote:
> >>
> >>> I'm having a problem with a new IBM IDE disk I just bought
> >>> Model=IBM-DJNA-371350, FwRev=J76OA30K, SerialNo=GM0GM088910
> >>> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> >>> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> >> ^^^^^^^^^^^
> >>
> >> There's your problem. The number of cylinders is here is causing problems, as
> >> it is clamped to 2^14. Most BIOSes let you lower this number by increasing the
> >> number of phony heads to 255.
>
> > Nonsense.
>
> Unfortunatelly, not :-((
>
> > All large disks will show RawCHS=16383/16/63, entirely independent of the
> > BIOS (which is not involved at all). It is the ATA standard.
>
> Huh ?
>
> -- cut --
> [root@localhost /root]# hdparm -i /dev/ide/hd/c0b0t0u0
>
> /dev/ide/hd/c0b0t0u0:
>
> Model=IBM-DJNA-371350, FwRev=J76OA30K, SerialNo=GM0GMGL2059
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=26310/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=3(DualPortCache), BuffSize=1966kB, MaxMultSect=16, MultSect=off
> DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=2(fast)
> CurCHS=1650/255/63, CurSects=26520480, LBA=yes
> LBA CHS=825/510/63 Remapping, LBA=yes, LBAsects=26520480
> tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2
> IORDY=on/off, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4
> UDMA modes: mode0 mode1 *mode2
> -- cut --
>
> As you can see RawCHS here is 26310/16/63 and all is working like a charm.
> As I have EXACTLY same model as Wichert (including FwRev and such) I'm pretty
> sure it's something in BIOS and/or recent kernel changes (I'm still using
> 2.2.10ac10)...
>
>
>
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