Re: [Libguestfs] [PATCH] appliance: Disable EDD (edd=off) (RHBZ#1404287).

EDD (https://en.wikipedia.org/wiki/Enhanced_Disk_Drive) is a BIOS INT 13h subcall for communicating the extended size of the boot disk over 8GB to the OS. Since libguestfs doesn't use a boot disk, and the appliance disk is limited to 4GB, and we use virtio-scsi, this is all useless. EDD is also broken currently on RHEL 7.3, see: https://bugzilla.redhat.com/show_bug.cgi?id=1404287 Also the EDD probing takes significant extra time (about 80ms on my laptop), and using edd=off reduces this time although doesn't entirely eliminate it. ---