I tried to copy the MorphOS 3.20 ISO (so about 471Mb) on an SFS partition, but when calculating the MD5 of the file, I get random values (both with Ambient information window, and the new command line tool OFHash), almost never the same, and certainly not the correct one.

I guess there's memory corruption happening somewhere, but I don't know where:

- in memory?
- on the hard drive?

That's a Pegasos 2 with the built-in IDE port, and a single stick of 512 Mb RAM. In the serial logs, SmartFirmware says that memory test is OK.

What can I do to locate the problem? Is there a way to do an extensive memory test from MorphOS?

I read about the memtest command, and ran 'memtest EXTENSIVE DISABLE 20 VERBOSE' and got no error.