RE: status=0x51 { DriveReady SeekComplete Error }

[Juha Saarinen]

%-> > > Just got a new IBM 7200 RPM 13G HDD, and I am finding it
%-> impossible to
%-> > > turn on DMA with hdparm. Kernel version is 2.2.15pre5. It
%-> immediately
%-> > > resets and disables DMA. Using '-d1 -X34' causes an immediate, hard
%-> > > lockup. What's really disappointing is that my el-cheapo WD
%-> HDDs with
%-> > > DMA on show 2-3 times the throughput of the IBM with 'hdparm -tT'

Why do you use -X34? The drive is supposed to default to the fastest
transfer mode at power on. Does -A1c1d1m16u1 work for you? If you use the -X
parameter, I believe you should try -X66 (UDMA mode 2).

That drive is a UDMA-66 one as well... might have something do with your
problems. What chip set do you have?

-- Juha



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