i386/67773: 5.x series - md5 on dev no longer works e.g. md5 /dev/ad2

[Dan Fletcher]

>Number:         67773
>Category:       i386
>Synopsis:       5.x series - md5 on dev no longer works e.g. md5 /dev/ad2
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jun 10 02:20:20 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Dan Fletcher
>Release:        5.2.1
>Organization:
Law Enforcement
>Environment:
>Description:
I work computer forensics for a law enforcement agency.  I use FreeBSD extensively.  Tried to upgrade to 5.x series for the SATA support.  However the md5 checksum no longer works on raw devices.  I have tried it with 5.0 and 5.2.1, neither work.

Worked fine with 4.x series.

cksum of a raw device works fine, e.g.
cksum /dev/ad2
>How-To-Repeat:
Try to md5 checksum any raw device:

md5 /dev/fd0
md5 /dev/ad2, etc.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: