将以下参数添加到所有标签中：

dom0_mem=max:128G(rescue 标签为 max:126G)

编辑完成后，您的文件应如下所示：

# Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.

default ks

prompt 1

timeout 30

display boot.msg

F1 boot.msg

F2 options.msg

label xen

kernel mboot.c32

append xen.gz dom0_mem=max:128G --- vmlinuz --- initrd.img

label p2v

kernel mboot.c32

append xen.gz dom0_mem=max:128G --- vmlinuz p2v --- initrd.img

label rescue

kernel mboot.c32

append xen.gz dom0_mem=max:126G --- vmlinuz rescue --- initrd.img

label ks

kernel mboot.c32

append xen.gz dom0_mem=max:128G --- vmlinuz ks=file:/ks.cfg --- initrd.img