b203136c4816f55a10c2f13ca44a7642561dd852 *precise-alternate-amd64+mac.iso
e5e789e0a29340073e9528373ee6904a2bd8b6ea *precise-alternate-amd64.iso
90f3dbbe9e7269eb02ad4c327f68163890aeda57 *precise-alternate-i386.iso