Is it ok to start a car with low engine oil?

I did a oil/filter change on a 2011 Honda Accord 4 cylinder. It calls for 4.4 quarts, but since I didn't know if there was any old oil still left over, I put in 3 quarts first(dip stick showed 3/4 between the dots), started the engine and backed off my ramps. I check again and the oil level is well below the low dot.

Is it ok that I idled the engine for something like 30 seconds with low oil? I mean it wasn't bone dry(had 3 quarts), but it wasn't enough.

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