Here's how I went fixing my 3.3GB of Fedora i386/32-bit DVD ISO, downloaded directly(http) from an official mirror, which went kaput. x-( Hash check(SHA1) failed to verify the ISO! Rather than a fresh download, I went fixing the ISO itself.
- Download your data(ISO, ZIP, etc.) from any source or mirror. Sometimes it's faster to grab than a torrent download, but you may corrupt your big downloads with frequent pauses or crashes, and the checksum fails to verify!
- Download your favorite Bit Torrent client. Here are some recommendations: µTorrent for Windows and KTorrent for KDE.
- Search for the exactly same data torrent, and open using the torrent client.
- Monitor the location of your torrent downloads directory while you start the download. Stop the torrent as soon as the files are created there.
- Now replace the file in the torrent downloads with the one you downloaded earlier. Make sure the name is intact as the torrent client made it. For example,
Fedora-9-i386-DVD.iso.bc! is the format for incomplete BitComet torrent downloads.
- Now you need to check the data integrity of your torrent. The option is "Check data integrity" in KTorrent, and "Force Re-Check" in uTorrent(µTorrent). It'll take a few seconds to verify your data for corrupt parts and enlist to itself for re-download of them. My check stopped at 99.9% for Fedora-9-i386-DVD.iso.
- When the check is finished, proceed with starting the torrent now. In my case, 0.01% was downloaded again, fixing my ISO!
- Yay!! Now help others out! And keep seeding. :
In whole, you are able to download stuff faster than torrents(sometimes 
) via http/ftp sources, and later fix up any errors that download may have using a torrent client! Good luck! ( continue
reading... )
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