On Tue, Mar 08, 2011, Shawn Guo wrote:
parted -s /dev/sdN mklabel msdos && sfdisk -L /dev/sdN
$ sudo parted -s /dev/sdb mklabel msdos && sfdisk -L /dev/sdb /dev/sdb: Permission denied
sfdisk: cannot open /dev/sdb read-write
you want to sudo the sfdisk call too