This question is not a "Google" question. It's for people who are experienced in data loss recovery.
Among the many programs I have used in the past for data recovery, I have found EASEUS Data Recovery Wizard Professional to be most successful. I have had high success rates in recovering data...
boot record
data loss
data preservation
data recovery
disk analysis
disk maintenance
easeus
external drive
file recovery
file system
formatting
hard drive
initialization
recoveryslowrecovery
storage issues
wd my book