mysql table tables_priv index is corrupted and the best possible way to repair it

I am using MySQL with XAMPP. For sometime now I keep getting a server unavailable error and upon digging deeper I noticed that my mysql.tables_priv table index is corrupted (ARIA Database Type). I have tried running aria_chk and myisamchk to repair, but to no avail. I have also tried mysql_upgrade but again this didn't help. The only thing I can think of now is to manually remove the tables_priv.MAD file from xampp\mysql\data\mysql folder, create an empty one and REPAIR TABLE tables_priv. Can you kindly advise if that is the right and safe approach to take? Also, if you have any other suggestion then please do mention.