CF card and /dev filesystem entries

[Oliver Fromme]

Brian Candler <B.Candler at pobox.com> wrote:
 > However, when I insert a CF card with normal partioning I need /dev/da0s1,
 > and this is not present in the /dev filesystem because the partition table
 > has not been read.
 > 
 > # mount -t msdos /dev/da0s1 /mnt/cf
 > mount_msdosfs: /dev/da0s1: No such file or directory
 > 
 > Just reading the first block is not sufficient:
 > 
 > # dd if=/dev/da0 of=/dev/null count=1
 > 1+0 records in
 > 1+0 records out
 > 512 bytes transferred in 0.040984 secs (12493 bytes/sec)
 > # mount -t msdos /dev/da0s1 /mnt/cf
 > mount_msdosfs: /dev/da0s1: No such file or directory

I think devfs is updated when a descriptor on the device
which was opended for writing is closed.  But you don't
actually have to write anything.  That means, the following
command should do it:

# dd if=/dev/null of=/dev/da0 count=0

Best regards
   Oliver

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Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
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