Unable to start crs on node1

Dear Experts,

Enviornment: 2 node RAC version 12.1.0.2

Unfortunately,We have removed UAT folder which has GRID_BASE and GRID_HOME.

We have a backup of UAT folder which is taken a 2 days back.After the backup,no activities are carried out.

[griduat@erpuatdb1 ~]$ cd /u01/UAT/

[griduat@erpuatdb1 UAT]$ ls -ld GRID_BASE

drwxr-xr-x 13 root root 4096 Dec 28 20:25 GRID_BASE

[griduat@erpuatdb1 UAT]$ ls -ld GRID_HOME/

drwxr-xr-x 3 root root 4096 Dec 28 20:12 GRID_HOME/

[griduat@erpuatdb1 UAT]$

Deleted UAT folder which has GRID_BASE AND GRID_HOME

cd /u01

rm -rf UAT

We have copied the folder UAT from backup

[griduat@erpuatdb1 u04]$ cd /u04/bkpgrid/