At work we use the proper IDE flash based hard drives.
They're pretty low capacity (60Mb or something) but I've never seen one go corrupt.
We use them in older PCs which run as dedicated digital audio switch controllers in trunked radio networks.
Basically the computer boots a DOS application from the hard drive when it first powers up, and runs continuously with the occasional read/write to the drive.
They plug directly into the 40 way 3.5" type IDE cable, and there is a small adaptor cable which supplies power to the drive.
You may want to try something like this?
Might not be a good idea as a primary drive, as flash memory has a limited number of write cycles, typically 100000 or so. Lots of writes like to a web browser cache for example would quickly clock up the number of writes.
