How to run fsck?

[Kent West <westk@acu.edu>]

After a freeze of the Hurd on a newbie install forcing a power cycle, I 
get errors about needing to run fsck. What's the syntax to run it on my 
root partition, which in Linux would be referred to as /dev/hdc1 and 
elsewhere is referred to as (hd0,0) and elsewhere is referred to as hd2s1?

Thanks!

--
Kent