Peter Gordon wrote: > Each ISOs directory contains a file called SHA1SUM that contains the > SHA-1 hashes of the images. You can use a tool called sha1sum to > calculate this hash from the image and compare it to the content of the > SHA1SUM file. I wanted to check the burn, not the download. But your message gave me half what I wanted. I ended up doing the following * looked at how big the iso image was and divided that by 512 to get the number of blocks in it * dd if=/dev/dvd of=check.iso count=blocks * sha1sum check.iso * compared that with the SHA1SUM file Danny. --------------------------------------------------------- http://dannyreviews.com/ - over nine hundred book reviews http://danny.oz.au/ - civil liberties, travel tales, blog ---------------------------------------------------------