Use 7-Zip to extract the archive. You should see a single .iso file now roughly 2.5GB to 3.5GB in size. If the ISO is still only 1GB, you have been tricked or it is corrupted.
Consequently, the top search results are usually third-party forums, torrent sites, or file-sharing networks. The dangers include: Use 7-Zip to extract the archive
is the most reliable community-driven source for "untouched" ISOs. Search for "Windows 7 Ultimate SP1 64-bit." Verify the Hash: Use 7-Zip to extract the archive
