I used the 3.8.13 bone50 image to flash to both revs here is the difference
rev. A6A
root@beaglebone:~# uname -a
Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l GNU/Linux
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1715936 368044 1259060 23% /
udev 10240 0 10240 0% /dev
tmpfs 101700 484 101216 1% /run
/dev/disk/by-uuid/d9ec67af-cb22-43b1-b271-bac1d72931a4 1715936 368044 1259060 23% /
tmpfs 254248 0 254248 0% /dev/shm
tmpfs 254248 0 254248 0% /sys/fs/cgroup
tmpfs 102400 0 102400 0% /run/user
tmpfs 5120 0 5120 0% /run/lock
/dev/mmcblk0p1 98094 73876 24218 76% /boot/uboot
rev. B
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1715936 1503116 123988 93% /
udev 10240 0 10240 0% /dev
tmpfs 101700 596 101104 1% /run
/dev/disk/by-uuid/b3684199-af26-4884-a407-097e769cd863 1715936 1503116 123988 93% /
tmpfs 254248 0 254248 0% /dev/shm
tmpfs 254248 0 254248 0% /sys/fs/cgroup
tmpfs 5120 0 5120 0% /run/lock
tmpfs 102400 0 102400 0% /run/user
/dev/mmcblk0p1 98094 73876 24218 76% /boot/uboot
so rev B is unusable.
Mike, what is the problem ? Space left on disk ?I think there is a bare-fs install somewhere too, but as to where you’d have to ask Robert Nelson ( as I build my own and dont remember ).
Really? A third complaint on the same exact topic in the last hour?
That is not really a good start to get anyone "interested" in helping
you for free.
Regards,
I could always point him to your build from scratch instructions RObert 
I did, 45 mins ago!
Some new users... They like to complain but don't read the replies!
Regards,
I apologize for not reading replies, but I cannot find my original posts I guess I should have bookmarked them
Really? That's nice to know. Good Luck on your project! (but you won't
get this message anyways)
Regards,
Ahh Robert, keep your shirt on; we all get days with compounded problems;
just because my job is different from yours doesn’t mean I’m demeaning yours;
we’re all trying to make Debian succeed in our own way.
Dealing with Linux is just a tiny part of my job so when it changes as drastically
as it does when I need a number of stable features I might make mistakes.
Lucky those who don’t.
I just think comical, in my 5 years on this list, never had happen.
Regards,
Ahh Robert, keep your shirt on; we all get days with compounded problems;
just because my job is different from yours doesn’t mean I’m demeaning yours;
we’re all trying to make Debian succeed in our own way.
Dealing with Linux is just a tiny part of my job so when it changes as drastically
as it does when I need a number of stable features I might make mistakes.
Lucky those who don’t.
Don’t take what Robert said personally. We get these same questions over and over again and some days we get a little punchy. It would be so much easier if users would first go to groups.google.com and search the beagleboard group for answers first before asking here. Most of the question a user might have has probably been answered already and most likely more than once. This way users get an answer very quickly and we don’t have to answer the same questions over and over again. Also, we don’t mind helping users who help themselves. BTW, Robert is probably one of the nicest and most helpful person here. Oh, I forgot to say smartest 
Regards,
John