Not detecting NFS root

10.10 desktop is not detecting the NFS root of ym system for kernel 2.6.35-28 but it does for -25
upgrade output:
$ sudo ap-get upgrade
sudo: ap-get: command not found
higgins@X-L5:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Do you want to continue [Y/n]?
Setting up linux-image-2.6.35-28-generic (2.6.35-28.49) ...
Running depmod.
update-initramfs: Generating /boot/initrd.img-2.6.35-28-generic
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
 * dkms: running auto installation service for kernel 2.6.35-28-generic
 * nvidia-current (260.19.06)... [ OK ]
 * virtualbox-ose (3.2.8)... [ OK ]
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
run-parts: executing /etc/kernel/postinst.d/nvidia-common 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 2.6.35-28-generic /boot/vmlinuz-2.6.35-28-generic
/usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?).
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-2.6.35-28-generic.postinst line 1010.
dpkg: error processing linux-image-2.6.35-28-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of linux-image-generic:
 linux-image-generic depends on linux-image-2.6.35-28-generic; however:
  Package linux-image-2.6.35-28-generic is not configured yet.
dpkg: error processing linux-image-generic (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
 linux-generic depends on linux-image-generic (= 2.6.35.28.36); however:
  Package linux-image-generic is not configured yet.
dpkg: error processing linux-generic (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                                                                                                                                    Errors were encountered while processing:
 linux-image-2.6.35-28-generic
 linux-image-generic
 linux-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)

mount output:
# mount
192.168.2.1:/mnt/storage/nfsRoot/desky on / type nfs (rw,vers=4,addr=192.168.2.1,clientaddr=192.168.2.50)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw)
none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-28-generic 2.6.35-28.49
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10
Uname: Linux 2.6.35-25-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun Mar 20 19:04:46 2011
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux