diff --git a/start-win10 b/start-win10
index aa69043..6a49962 100755
--- a/start-win10
+++ b/start-win10
@@ -12,7 +12,7 @@
 # - resets host isolation on VM shutdown
 #
 # define the CPUs (cores/threads) to isolate for the VM
-VM_CORES='0-19,24-43'
+VM_CORES='0-20,24-44'
 # Tip: refer to 'virsh capabilities | grep siblings'
 # this will show CPU topology information for the host
 # allows one to pick optimal layout for the VM
@@ -38,7 +38,11 @@ sudo sh -c 'sysctl vm.stat_interval=120 ; sysctl kernel.watchdog=0'
 # attempt to reset shielding, we want to create it with current params
 # and remove any existing slices from previous VM boots
 # we want it to be created with current params, such as possibly-changed pinned CPUs
-sudo sh -c 'cset shield --reset --sysset=host.slice --userset=windows10.slice ; cset set -d windows10.slice'
+sudo cset shield --reset --sysset=host.slice --userset=windows10.slice || echo "something happened resetting shielding"
+
+# destroy old cpusets
+sudo cset set -d windows10.slice || echo "ignoring failure to destroy VM cpuset"
+sudo cset set -d host.slice || echo "ignoring failure to destroy host cpuset"
 
 # shield cores
 # userset slice must match the partition defined in libvirt xml, eg: