FileCheck in NeoFinder
NeoFinder is the very first disk cataloger for the Macintosh which can generate an industrial strength MD5 checksum for every single file in a catalog. We call that feature FileCheck and it is integrated nicely in NeoFinder.
This unique ability of NeoFinder is very useful for photographers who wish to ensure that all their precious photo files on any backup and archive disk are still fully readable and unchanged. It can also be used in forensics, to find out if a file has been changed.
This is of course also helpful for anyone who wants to check for modifications of files on any disk.
If you enable FileCheck in the cataloging preferences in NeoFinder, every new catalog you create or update will contain this FileCheck value for every single file. As this operation of course takes quite some time, as every file must be read and computed completely, this is turned off initially.
You can then verify either a single file by using the context menu or even an entire catalog.
If you verify the FileCheck values for an entire catalog, NeoFinder will even show you a nice window containing all files who did NOT pass the check, so you know exactly which files are damaged and need to be replaced.
Of course, NeoFinder also displays the actual MD5 value for every file in the Inspector:
And you can copy the MD5 FileCheck string to the clipboard, using the context menu for the file.
To see if a catalog contains FileCheck values, the Inspector info for the catalog also tells you: