search for: vn0c

...least returns the actual position (though few applications will handle that properly), or that write() returns -1 and EINVAL when writing to such a non-aligned location. Try this DESTRUCTIVE test on a scratch or spare partition that may lose all its data. Note that some devices are halfway fine; vn0c lets the seek succeed but returns EINVAL for the subsequent write, so make sure to try this on a da partition (comment out your swap partition, reboot, and use your freshly-deactivated swap partition if need be). NIT PICK: write(2) EINVAL means "The pointer associated with d was negative.&quo...