dd to thumb drive, W7 permission problem

[Charles Russell]

The following works on Windows XP, but fails on Windows 7, apparently 
because of some permission setting (even in Administrator mode).

# dd if=binary.img of=/dev/sdb
dd: writing to `/dev/sdb': Permission denied
3+0 records in
2+0 records out
1024 bytes (1.0 kB) copied, 0.081 s, 12.6 kB/s

I would be grateful for suggestions of what to change and where to find it.


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