We’re trying to get a 160G drive working with QNX4.25. Fsys.eide recognizes
the controller (Maxtor Ultra ATA/133 PCI) but fdisk only shows 16440
cylinders (131G). The disk has 19617cyl (160G) and is fully accessible in
Windows on the same hardware. The disk works fine as a 131G drive in QNX,
but we’d of course like to be able to use the whole thing. Any thoughts on
how we can do this?
Thanks.
Ping… Is 131G an internal Fsys or Fsys.eide limit?
“Robert Nadler” <bobn@nci.com> wrote in message
news:abu30g$ee3$1@inn.qnx.com…
We’re trying to get a 160G drive working with QNX4.25. Fsys.eide
recognizes
the controller (Maxtor Ultra ATA/133 PCI) but fdisk only shows 16440
cylinders (131G). The disk has 19617cyl (160G) and is fully accessible in
Windows on the same hardware. The disk works fine as a 131G drive in QNX,
but we’d of course like to be able to use the whole thing. Any thoughts on
how we can do this?Thanks.
\
Robert Nadler <bobn@nci.com> wrote:
We’re trying to get a 160G drive working with QNX4.25. Fsys.eide recognizes
the controller (Maxtor Ultra ATA/133 PCI) but fdisk only shows 16440
cylinders (131G). The disk has 19617cyl (160G) and is fully accessible in
Windows on the same hardware. The disk works fine as a 131G drive in QNX,
but we’d of course like to be able to use the whole thing. Any thoughts on
how we can do this?
Fsys.eide doesn’t support drives over 137G. It also doesn’t support
shared interrupts, so you will only be able to use one of the interfaces
on the Maxtor controller.
Any chance Fsys.eide will ever be made to handle larger drives?
Are any of the QNX4 disk drivers able to go > 130G?
Also, does the same limitation exist in QNX6?
“Kevin Chiles” <kchiles@qnx.com> wrote in message
news:ac316j$iv6$1@nntp.qnx.com…
Robert Nadler <> bobn@nci.com> > wrote:
We’re trying to get a 160G drive working with QNX4.25. Fsys.eide
recognizes
the controller (Maxtor Ultra ATA/133 PCI) but fdisk only shows 16440
cylinders (131G). The disk has 19617cyl (160G) and is fully accessible
in
Windows on the same hardware. The disk works fine as a 131G drive in
QNX,
but we’d of course like to be able to use the whole thing. Any thoughts
on
how we can do this?Fsys.eide doesn’t support drives over 137G. It also doesn’t support
shared interrupts, so you will only be able to use one of the interfaces
on the Maxtor controller.
Robert Nadler <bobn@nci.com> wrote:
Any chance Fsys.eide will ever be made to handle larger drives?
It is a limitation in the ATA spec (of that era): 65536 cylinders x
16 heads x 255 sectors = 267386880 sectors (of 512 bytes) = 137 GB (131 GiB).
Are any of the QNX4 disk drivers able to go > 130G?
SCSI (should not be hamstrung by the ATA/EIDE geometry limitations).