disklabel question

[Jason]

hey folks, I just migrated my freebsd server from a couple of 
older/smaller scsi disks to a new ide controller with a bigger ATA133 
disk. I have all the partitions moved over to the new drive..
the /etc/fstab on the new drive is updated. The bootmanager is installed 
on the new drive.. but when I boot, I get

Invalid partition
No /boot/loader

>>FreeBSD/i386 BOOT
Default: 0:ad(0,a)/kernel
boot:

At the "boot:" prompt if I enter "0:ad(4,e)/kernel", it boots fine.

here is the old vs the new
Filesystem    Size   Used  Avail Capacity  Mounted on
/dev/da0s1a   126M    53M    63M    45%    /
/dev/da0s1f   252M    21M   211M     9%    /tmp
/dev/da0s1e   252M   124M   108M    53%    /var
/dev/da1s1e   3.9G   2.7G   946M    74%    /usr
procfs        4.0K   4.0K     0B   100%    /proc

new:
Filesystem    Size   Used  Avail Capacity  Mounted on
/dev/ad4s1e   984M   534M   372M    59%    /
/dev/ad4s1f    36G   2.2G    31G     6%    /usr
procfs        4.0K   4.0K     0B   100%    /proc


so Im thinking I need to do something with disklabel but I want to make 
sure that I dont destroy my "so far working" efforts.

regards,
Jason