This is mainly addressed to David Courtney, or anyone else who may
have tried using the Ultradesic scripts under FreeBSD 7.0
Using the script that writes the system image to CF, with FreeBSD
6.1, I have always been successful with the line:
gzcat <gz_image_file> | dd of=/dev/ad0 bs=64k
However, under FreeBSD 7.0 this line now fails, reliably approximately
14.2 to 14.3 million bytes into the transfer (regardless of the
blocksize argument).
The transfer works fine if I Pre-decompress the source file, i.e.
cat <image_file> | dd of=/dev/ad0 bs=64k
Interestingly, the error displayed is "dd: /dev/ad0: Invalid argument"
-- even though we're almost 14MB into the transfer.
The disk light is on during the transfer, so it appears that the
transfer is in process.
I can only assume that there is a buffer that is over/underflowing in
the stdin/stdout mechanism which didn't occur under 6.1.
Any help resolving this would be appreciated. (Well, other than the
obvious of "don't compress the image files", anyway!)
Thanks,
sjf
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