[Bug 204521] [new driver] [request] Port rtsx from OpenBSD to FreeBSD

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204521

--- Comment #15 from Gary Jennejohn <gljennjohn at gmail.com> ---
(In reply to Gary Jennejohn from comment #14)

I installed Debian Linux to check whether my Raltek controller really works.

The first read I did from the SD card returned all 0s.

After playing around for some time I discovered that the first megabyte (2048
sectors) was filled with 0s.  Apparently a result of the vendor formatting it
with FAT32.

So, OpenBSD may also work if I run dd with skip=2048.

This might also be the reason why hlh is seeing 0s when he reads from his card.

Unfortunately, with the code from hlh I still see CRC errors which prevent me
from using the my controller.

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