Load PostgreSQL database from corrupt drive
Theoretically, your database does not have problem, if it is running.

But to verify it, first Stop your database, make a physical copy of PostgreSQL folders.

After that, start your database make an ordinary backup using pg_dump, after that try to restore this backup in a new environment, if you don't have a problem your database is ok.

If you have some problem I will share a link with the main problems of corruption and how to solve it.

https://stackoverflow.com/questions/11030173/repair-corrupt-database-postgresql

But analyze all of the possibilities before starting this process does not exist the only way to resolve this problem.