Image Security and Checksums

I highly recommend downloading these images from oldsilicon.com and then checking the file checksum against what I provide alongside the images. Since these files might be loaded onto a classic machine that you’ve restored and that is connected to your network, there's a risk that someone could alter the image after it's downloaded, potentially creating an attack vector for your more modern computers. While I’m not doing this, I can't vouch for others. If you share any of these images, please share the site link so others can read this advisory!

In order to check the image after downloading,

On a Mac use the “shasum” command from the command line:

shasum -a 1 <filename>

On a Windows box use the “certutil” command from the command line:

certutil -hashfile "filename.exe" SHA1

 The number that pops out should match the number listed above the link on the website.  If the two don’t match please send me a note via the Contact Me link on the site before booting the disk image on your box and I will make sure the checksum is still correct on the site.

Obviously, once you uncompress the image with gzip and/or boot the image, the checksum will no longer match and this is normal.