On Tue, Apr 23, 2002 at 11:47:57AM +0100, R.A.Owen wrote:
> The install system seems to start normally
>
> Also I have noticed that the fake volheader has "number of heads" set
> to zero... can use fdisk to interogate this... A SGI boot CD has number
> of heads set to one.
Hmm - Where do you see a "Number of heads" ?
struct device_parameters {
unsigned char dp_skew; /* spiral addressing skew */
unsigned char dp_gap1; /* words of 0 before header */
unsigned char dp_gap2; /* words of 0 between hdr and data */
unsigned char dp_spares_cyl; /* This is for drives (such as SCSI
that support zone oriented sparing, where the zone is larger
than one track. It gets subracteded from the cylinder size
( dp_trks0 * dp_sec) when doing partition size calculations */
unsigned short dp_cyls; /* number of usable cylinders (i.e.,
doesn't include cylinders reserved by the drive for badblocks,
etc.). For drives with variable geometry, this number may be
decreased so that:
dp_cyls * ((dp_heads * dp_trks0) - dp_spares_cyl) <= actualcapacity
This happens on SCSI drives such as the Wren IV and Toshiba 156
Also see dp_cylshi below */
unsigned short dp_shd0; /* starting head vol 0 */
unsigned short dp_trks0; /* number of tracks / cylinder vol 0*/
unsigned char dp_ctq_depth; /* Depth of CTQ queue */
unsigned char dp_cylshi; /* high byte of 24 bits of cylinder count */
unsigned short dp_unused; /* not used */
unsigned short dp_secs; /* number of sectors/track */
unsigned short dp_secbytes; /* length of sector in bytes */
unsigned short dp_interleave; /* sector interleave */
int dp_flags; /* controller characteristics */
int dp_datarate; /* bytes/sec for kernel stats */
int dp_nretries; /* max num retries on data error */
int dp_mspw; /* ms per word to xfer, for iostat */
unsigned short dp_xgap1; /* Gap 1 for xylogics controllers */
unsigned short dp_xsync; /* sync delay for xylogics controllers */
unsigned short dp_xrdly; /* read delay for xylogics controllers */
unsigned short dp_xgap2; /* gap 2 for xylogics controllers */
unsigned short dp_xrgate; /* read gate for xylogics controllers */
unsigned short dp_xwcont; /* write continuation for xylogics */
};
--
Florian Lohoff flo@rfc822.org +49-5201-669912
Nine nineth on september the 9th Welcome to the new billenium
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