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title Windows 7 32-bit Repairmap --mem (hd0,0)/W7-32R.iso (hd32)map --hookchainloader (hd32)boottitle Windows 7 64-bit Repairmap --mem (hd0,0)/W7-64R.iso (hd32)map --hookchainloader (hd32)boot
The rescue USB can only be used to repair Windows 7 systems, not install Windows 7.
This article discusses the new Delphi 8 property access specifiers.