You're looking to download Snow Leopard 10.6.8 from Google Drive. Here's what I found:
System requirements:
Full Installer: To perform a clean install, you historically required the physical Retail DVD (typically version 10.6 or 10.6.3). Risks of Third-Party Downloads (Google Drive) download snow leopard 10.6.8 dmg google drive
labeled "10.6.8 Update" are just delta updates. To install Snow Leopard from scratch, you need the Full Retail DMG You're looking to download Snow Leopard 10