can't write

Trevor Woerner ppc339 at
Thu May 29 13:19:27 EST 2003

Now that I can get to the point where I can configure and mount my
compact flash card I find yet another interesting twist... I can't
write to the device.

If I mount it read-only everything is fine. I can read the device, do a
directory listing, copy thing from it, execute binaries, open files...
all that nice stuff. But the instant I try to write, things go up in

I wrote my own test modules to try to isolate this issue so I can study
it more. My module gives the same results the kernel gets: no matter
what is written to the device (ATA command 0x30), the entire sector
always ends up being entirely filled with zeros.

Whether I write "0xbeef" 256 times or copy one sector (say sector 0) to
some other place. When I read the newly written sector back, all it
contains are zeros.

Anyone seen something like this before?

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