Download copy of DVD ISO disc image for Windows Vista with Service Pack 1 or Windows Server 2008 from file sharing sites via Bit Torrent or eD2K network, and unsure of its authenticity or originality? A lot of downloads from Internet have been modified by the uploaders or even some are fake version purposely uploaded to confuse downloaders. Thus, it’s important to compare and verify the hash values of the downloaded files with the official version to ensure that what you get is indeed what you want.
Secure cryptographic hash functions is normally used to ensure the integrity of files. Two hash functions most commonly used is SHA-1 and MD5. Microsoft does provide SHA1 hash codes for most of its downloadable setup and installation files. Here’s the screenshots of the download page and the SHA-1 hash value of the ISO DVD images of 32-bit Windows Vista with Service Pack 1 (contains Ultimate, Business, Home Premium and Home Basic editions), 64-bit Windows Vista with SP1, Windows Vista with Service Pack 1 Enterprise Edition and Windows Server 2008 (contains Data Center, Enterprise and Standard Editions).
Windows Vista with Service Pack 1 (SP1) DVD
Windows Vista Enterprise Edition with Service Pack 1 (SP1)
Windows Vista with Service Pack 1 (SP1) Japanese Edition
Windows Vista Enterprise Edition with Service Pack 1 (SP1) Japanese Version
Windows Server 2008 x86 Edition English Version
Windows Server 2008 x64 Edition English Version