I have read how to mount single drives in fstab, but Im having trouble mounting multiple ones

I have added this to fstab


/dev/hda1 /media/windows ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/hdb1 /media/windows ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/sda1 /media/windows ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/sdb1 /media/windows ntfs-fuse auto,gid=1002,umask=0002 0 0


What can I do to allow all four drives to mount?

I'm no expert myself but my first guess would be that you a trying to mount them all to the same directory and that is where your problem most likely is
try mounting them to different directories and see if that helps
I have been able to mount multiple NTFS partitions on my box however I used different directories for each
try something like this

/dev/hda1 /media/windows/dir1 ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/hdb1 /media/windows/dir2 ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/sda1 /media/windows/dir3 ntfs-fuse auto,gid=1002,umask=0002 0 0
/dev/sdb1 /media/windows/dir4 ntfs-fuse auto,gid=1002,umask=0002 0 0

having already created the extra directories
I'm still a bit of a noob myself so I don't know for sure if that's the problem but this is my best guess