The ‘default’ Fedora 13 system for ARM mounts the root as nfs..   To change it to the (correct) ext3, modify /etc/fstab as follows:

# cat /etc/fstab
/dev/mmcblk0p2          /                       ext3    defaults        1 1
/dev/mmcblk0p1          /boot                   vfat    defaults        1 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
sysfs                   /sys                    sysfs   defaults        0 0

But… this will cause a problem at boot time, with the default APC kernel boot, as Fedora 13 will try to run fsck on a normally-mounted file system – which is a *bad thing*…
So, change the APC kernel boot parameters:

from

mem=460M root=/dev/mmcblk0p2 rw initrd=0x01400000,32M console=ttyS0,115200n8 mbtotal=52M

to

mem=460M root=/dev/mmcblk0p2 ro initrd=0x01400000,32M console=ttyS0,115200n8 mbtotal=52M

– and then all will be OK..

But remember – this is all antique stuff, as later versions of Fedora moved to systemd, and all this changed…