Files corrupt on copy

[Alan Cox]

> > Try booting with mem=4G as a first experiment.
> 
> Still got the problem.  I had already tried physically removing 4Gb,

I assume you've also tried using just the other 4GB stick already

> 
> [trantor] /proc $cat cmdline
> ro root=/dev/VelociRaptor/F10root mem=4G
> 
> 
> Failed on the 4th attempt ...
> 
> $cp file1.zip new_file.zip  ; cmp file1.zip new_file.zip
> $cp file1.zip new_file.zip  ; cmp file1.zip new_file.zip
> $cp file1.zip new_file.zip  ; cmp file1.zip new_file.zip
> $cp file1.zip new_file.zip  ; cmp file1.zip new_file.zip
> file1.zip new_file.zip differ: byte 135644629, line 513910

Does feel like hardware or a BIOS setup failure of some sort
- is the IDE/AHCI controller on the mainboard or a plug in card ?
- Have you checked the box for BIOS updates and also tried resetting to
  the BIOS safe defaults and retesting ?