ToolTip: checksum

Mon, 28 Jun 2010 22:50:37 +0000

Today’s ToolTip is about a utility called checksum and guess what, it can create and verify checksums. But beside all the other checksum utilities i came across so far this one has some nice features that make it worth mentioning it.

First it’s fast. I created a checksum for the Windows 7 x64 ISO file and it was about 15 to 20 seconds faster than other checksum utilities. Another feature that I like is that it can not only create checksums for individual files, but also for folders and it’s entire content. Checksum fully integrates into the Windows Explorer context menu but can also be launched from the command line.

Verifying your file downloads

Thu, 02 Apr 2009 21:40:59 +0000

Today we once more ran into an issue caused by a corrupted file transfer. I mention “once more” because this is something I see happening all the time. So let me drop a couple of words on this.

When putting content on an FTP site consider creating a checksum file as this will allow others to validate their file downloads. Just comparing file size is not enough (examples follow).

There are many freeware tools that can create and verify checksum files. One of the tools we are using is QuickSFV. What is nice about QuickSFV is that it is fast and can be fully integrated into the Windows Explorer context menu, allowing you to just select a file and create or verify a checksum file of it.

Checksum on Anything About IT

ToolTip: checksum

Verifying your file downloads