Consider asking Apple Support or finding a genuine 10.6.8 retail DVD on eBay — then create your own DMG with Disk Utility.
To run Snow Leopard, your hardware must meet these minimum specifications: Mac App Store Update for OS X Snow Leopard - Apple Support download snow leopard 1068 dmg google drive upd
Search Google Drive for: MacOSXUpdCombo10.6.8.dmg (approx. 1.1GB). Consider asking Apple Support or finding a genuine 10
Outside, the snow began to settle on the windowsill, but inside, the Snow Leopard was running wild once again. download snow leopard 1068 dmg google drive upd
A DMG file alone is not enough to install the OS on a blank hard drive. You must restore that DMG to a USB flash drive or DVD using Disk Utility (on an older Mac) to make it bootable.