Windows 7 Beta build from MSDN, release January 7, 2009 has a different MD5 checksum like the laked version from december 2008? en_windows_7_beta_dvd_x86_x15-29073.iso-MSDN: MD5:4BBD31BA70D3510A4EE7F889926B1457 7000.0.081212-1400_client_en-us_Ultimate-GB1CULFRE_EN_DVD.iso MD5:F9DCE6EBD0A63930B44D8AE802B63825 can anyone confirm MD5 checksum?
I'am find myself the answer in My Digital Life site: The SHA-1 hash values for the ISO from MSDN/TechNet is exactly the same with the leaked build 7000 or 32-bit Windows 7 Beta and 64-bit Windows 7 Beta.
Found this : The details of the DVD ISO image available for download form MSDN and Technet are: Windows 7 Beta (x64) - DVD (English) File Name: en_windows_7_beta_dvd_x64_x15-29074.iso Date Posted (UTC): 12/30/2008 4:26:48 PM SHA1: E09FDBC1CB3A92CF6CC872040FDAF65553AB62A5 ISO/CRC: 8E2FAD39 Windows 7 Beta (x86) - DVD (English) File Name: en_windows_7_beta_dvd_x86_x15-29073.iso Date Posted (UTC): 12/22/2008 2:41:15 PM SHA1: 6071184282B2156FF61CDC5260545C078CCA31EE ISO/CRC: AABA5A48