hi all,

rookie question again...


dmesg tells me that:

/dev/wd1a: file system not clean (fs_flags=4); please fsck(8)


I never had to use fsck so I just want to know what exactly is it doing,
how do I use it properly and could there be any serious problems - the data 
on that disk are *crucial* for our work here (yes, we do have backups...). 

I couldn't make much of the man pages...


thx 
Marc