gaia CLI upgrades

R75.40 to R77.10

To upgrade using an ISO image on a DVD:
Note - This procedure is not supported on IP Appliances.
1. Download the Gaia ISO image from the Check Point Support Center
http://supportcontent.checkpoint.com/solutions?id=sk92965.
Check_Point_Install_and_Upgrade_R77.Gaia.iso
2. Burn the ISO file on a DVD.
3. Connect an external DVD drive to a USB socket on the appliance or open server.
4. From clish, run: upgrade cd

troubleshooting

error: mount failed

chkpmgr> upgrade cd
UPGRADE:  mount failed: Device or resource busy

in this scenario, i had manually mounted the /dev/cdrom to /mnt/cdrom. this is not needed and even causes the upgrade command to fail. I solve it by unmounting the cdrom.

# umount /dev/cdrom