改变Hyper-v下Centos7的默认分辨率

vi /etc/default/grub

1	GRUB_CMDLINE_LINUX=”crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet splash video=hyperv_fb:800×600″

save.

1	grub2-mkconfig -o /boot/grub2/grub.cfg