WinISO : Why does the verification of burned disc only take a few seconds?

Why does the verification of burned disc only take a few seconds?

WinISO uses Windows built-in IMAPI to burn discs. The IMAPI provides three levels of verification: none, quick and full.

The full verification reads and compares entire disc, but the quick verification only reads a small set of disc sectors. For more details, see IMAPI_BURN_VERIFICATION_LEVEL on MSDN.

WinISO sets the 'quick verification' as default, so the verification only takes a very short time. WinISO will set the 'full verification' as default from WinISO v6.4.

Verification Check-boxUncheckedChecked
WinISO 6.3 and earlierNo VerificationQuick Verification
WinISO 6.4 and laterQuick VerificationFull Verification