Can I get some info about rebuilding database?

I use 6.72 and 8TB extended storage and all 550 games are in that external 8TB HDD. I searched everything about restoring those games but stuck in this situation.
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"'CUSA01750'", "'CUSA00057'", "'CUSA03009'", "'CUSA03030'", "'CUSA05630'", "'CUSA01670'", "'CUSA02311'", "'CUSA07111'", "'CUSA01961'", "'CUSA00315'", "'CUSA00909'", "'CUSA00335'", "'CUSA03050'", "'CUSA01262'", "'CUSA04107'", "'CUSA02952'"]
Processing table: tbl_appbrowse_0394837706...

Can I get some info about rebuilding database?