Windows 7 RTM CRC and SHA-1 checksums

Michael PietroforteMVP By Michael Pietroforte - Fri, July 24, 2009 - 9 comments google+ icon

Michael Pietroforte is the founder and editor of 4sysops. He is a Microsoft Most Valuable Professional (MVP) with more than 30 years of experience in system administration.

Those of you who can’t wait to get their hands on Windows 7, might be interested to hear that a Microsoft blogger posted the Windows 7 RTM CRC and SHA-1 checksums. The article is in German and I didn’t find a corresponding English post. I just copied the hash codes at the end of this article. Somehow I think this was just an independent initiative of a Microsoft employee even though a major German news site puts it as if Microsoft officially published the Windows 7 RTM hash sums. Let’s see how long this blog post stays online.

You probably saw this odd competition on many blogs in the last couple of weeks. Almost every day they reported about a new leaked Windows 7 RTM ISO image. Even though I am also very curious about Windows 7, I usually don’t download software through torrent sites. The risk is too high to install software that contains viruses, rootkits or botnet code. If you have the correct checksum, then you are safe. But usually it is not worth the hassle. After the 30 days grace period has ended or after you have rearmed Windows 7 three times, you need a valid product key anyway.

Since you can’t stop those impatient fellows anyway from downloading Windows 7 via torrent sites, I think it is better to publish the checksums. The botnets out there are already big enough. So here are the hash values of the Windows 7 RTM ISO images (check out HashCalc if you need a free checksum calculator):

  • Windows 7 Retail Ultimate E englisch (x86)
    Name: 7600.16385.090713-1255_x86fre_cliente_en-us_Retail_UltimateE-GRMCEULFRER_EN_DVD.iso
    CRC: 0x953EFBCC
    SHA-1: 0xBC10F09B86DCBAF35B31B0E6FBA7D006ACAAD28D
  • Windows 7 Retail Ultimate E englisch (x64)
    Name: 7600.16385.090713-1255_x64fre_cliente_en-us_Retail_UltimateE-GRMCEULXFRER_EN_DVD.iso
    CRC: 0x77BE890E
    SHA-1: 0x029DCCEDD7691206010F84CE58343405A4DA92C9
  • Windows 7 Retail Ultimate englisch (x86)
    Name: 7600.16385.090713-1255_x86fre_client_en-us_Retail_Ultimate-GRMCULFRER_EN_DVD.iso
    CRC: 0xC1C20F76
    SHA-1: 0x5395DC4B38F7BDB1E005FF414DEEDFDB16DBF610
  • Windows 7 Retail Ultimate englisch (x64)
    Name: 7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso
    CRC: 0x1F1257CA
    SHA-1: 0x326327CC2FF9F05379F5058C41BE6BC5E004BAA7

Disclaimer: I give no guarantee that the above hashes are correct.

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9 Comments- Leave a Reply

  1. Lukas Beeler says:

    Well, i’ll wait till August 6th.

    Until then, i should also have my new X25-M G2 SSD ;)

  2. Not bad, but a little expensive. You can get a nice laptop for this price.

  3. Lukas Beeler says:

    I’d be hard to explain a second laptop on my expense account. A replacement hard drive on the other hand ;)

  4. Good that controllers don’t read IT pro blogs. ;-)

  5. You might be interested in this article.

  6. moiecoute says:

    Call me a pussy but I am also going to wait the 2 weeks.

    No need to take the risk when you have admin privileges to your works systems.

  7. bodydetox says:

    the interface of Windows 7 is great but in my opinion Windows XP is still a very solid and stable operating system. Right now, I would never give up XP for Windows 7.

  8. Brad Green says:

    MS may very well have published the hashes. If the files are available on MSDN or Technet, the hashes appear in the data with the files.

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