If you will not be sharing the new drive with another operating system, you may use the dedicated mode. Remember this mode can confuse Microsoft operating systems; however, no damage will be done by them. IBM's OS/2 however, will "appropriate" any partition it finds which it doesn't understand.
dd if=/dev/zero of=/dev/rsd1 bs=1k count=1
disklabel -Brw sd1 auto
disklabel -e sd1 # create the `e' partition
newfs -d0 /dev/rsd1e
mkdir -p /1
vi /etc/fstab # add an entry for /dev/sd1e
mount /1
An alternate method is:
dd if=/dev/zero of=/dev/rsd1 count=2
disklabel /dev/rsd1 | disklabel -BrR sd1 /dev/stdin
newfs /dev/rsd1e
mkdir -p /1
vi /etc/fstab # add an entry for /dev/sd1e
mount /1