[ros-kernel] problem with fat32

[Hartmut B. <har...@te...>]

Hi,

for testing, I use an old PC with a FAT32 boot partition. 
Sometimes I can't boot ROS on this PC or can't start one 
of the applications. There occurs a page fault like this:

Page Fault Exception: 14(4)
...

Now I've found the problem. The page fault comes from 
MiReadPage. MiReadPage read the page from a file, 
but the read operation returns with status 0xc000000d 
(STATUS_INVALID_PARAMETER). The problem is the 
function GetNextCluster (in vfatfs). Some clusters in the fat 
have set the highest 4 bits (0x00000ca0 -> 0xf0000ca0). 
When vfatfs try to get the next cluster, there is a read over 
the end of the partition. When I delete or overwrite this files 
in Win9x, the 4 bits are not deleted. I can fix this problem 
for ROS. But has anyone an idea, why Win9x does set the 
highest 4 bits for some clusters ?

- Hartmut    

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