can 2 operating systems be uploaded and run on the same pc, say, el capitan & snow leopard? (but not at same time, of course.)

can 2 operating systems be uploaded and run on the same pc, say, el capitan & snow leopard? (but not at same time, of course.)

Mac OS X 10.6 Snow Leopard

Mac OS X 10.6 Snow Leopard

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