im still having this issue while updating maverick to natty on amazon ec2 :
ubuntu@ip-10-134-146-53:/var/www$ sudo update-grub
Generating grub.cfg ...
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
Found linux image: /boot/vmlinuz-2.6.38-11-virtual
Found initrd image: /boot/initrd.img-2.6.38-11-virtual
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
Found linux image: /boot/vmlinuz-2.6.35-24-virtual
Found initrd image: /boot/initrd.img-2.6.35-24-virtual
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
/usr/sbin/grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1.
Found memtest86+ image: /boot/memtest86+.bin
done
im still having this issue while updating maverick to natty on amazon ec2 :
ubuntu@ ip-10-134- 146-53: /var/www$ sudo update-grub grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. 2.6.38- 11-virtual img-2.6. 38-11-virtual grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. 2.6.35- 24-virtual img-2.6. 35-24-virtual grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. grub-probe: warn: disk does not exist, so falling back to partition device /dev/sda1. +.bin
Generating grub.cfg ...
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
/usr/sbin/
Found memtest86+ image: /boot/memtest86
done