I still think it's safer to umount the filesystems you can (/drive0 and /drive1). Then there's not much need to sync or reboot. However, it makes a lot of sense to run sync before rebooting after fscking an un-umountable filesystem, like /.

Edit: After rereading your FAQ entry, you should make the following changes:

• add `a' and `y' flags to the fsck commands you have now so that it reads ``fsck -fay ...''.
  
• add info about how to fsck the root filesystem:
  
  

  ro
  
  fsck -fay /
  
  sync
  
  [reboot]

  
  
• the caveat about rebooting need only apply to the root fsck