Put linux-image-amd64 and xen-linux-system-amd64 in the GRNet section
of multistrap.conf
aptsources=Debian
[Debian]
-packages=linux-image-amd64 xen-linux-system-amd64 socat iproute xenstore-utils ntfsprogs xmlstarlet python reglookup chntpw parted python-support eatmydata gdisk ntfs-3g
+packages=socat iproute xenstore-utils ntfsprogs xmlstarlet python reglookup chntpw parted python-support eatmydata gdisk ntfs-3g
source=http://ftp.gr.debian.org/debian
suite=wheezy
[GRNet]
-packages=snf-image-helper ufsutils
+packages=snf-image-helper ufsutils linux-image-amd64 xen-linux-system-amd64
# Don't change the parameters below unless you really know what you are doing.
# The /'s and the empty `componets' variable are needed when working with apt.
source=http://apt.dev.grnet.gr/