Hi I'm heaving trouble connecting my N900 to PC (Windows or Linux PC)

If I want to copy a file from the PC to the N900 it always says it's in read only mode.

When I connect to the PC, the N900 says it's in read-only mode. Does anyone know how to fix this? Seems to me that the filesystem is corrupt somehow. I've found a thread on the internet where to do a fsck before mounting at boot but the explanation is not clear enough, I don't want to brick my phone :-).


Thanks for the help

Greetings

Wannes