I've installed knx 3.4 in a IBM netvista miditower.

No problem till the end, but the bootloader didn't work!

So I restart with the CD and pass this commands:

sudo mount -o remount,rw /dev/hda1

trying to make hda1 readable and writable. Then:

sudo grub-install /dev/hda

and it respond to me:

mkdir: impossibile creare la directory '/boot/grub': Read-only file system

So i pass the following:

# mount /dev/hda1 /mnt/hda1
# chroot /mnt/hda1 /bin/bash
# source /etc/profile

grub-install /dev/hda
or
grub-install /dev/hda1

Response:
Could not find device for /boot: Not found or not a block device



How can i install grub??