1.7.7 on Windows 7: can't write to removable disk

[tomas@datasupporten.se]

Hello.
I'm trying to write a disk image to a compact flash card with dd, but I
get the error:
"dd: writing to /dev/sdj: Permission denied"

Apart from the CF-card, I also tried a USB-stick with the same results.
I'm logged in as administrator.
Attaching output from cygcheck if needed.

Tomas
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