If you're just talking about verifying the checksum of the ISOs, you can use a Metalink to download them. They're XML files with all the mirrors and checksums. Once the download is done, it will automatically verify the checksums. Usually much faster too. To install: yum install aria2 To use: aria2c URL or aria2c http://download.packages.ro/metalink/fedora/FC-6-i386-DVD_iso.metalink etc The .metalinks for Fedora are at http://download.packages.ro/metalink/fedora/ -- (( Anthony Bryan )) Metalink [ http://www.metalinker.org ]