I have four disks in my Mac Pro. The boot disk and two others mount when OS X starts but the fourth one does not. I can mount it in Disk Utility and it appears to be all right.
How can I tell Mac OS X to mount it?
diskutil list /dev/disk2s2
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI 209.7 MB disk2s1
2: Apple_HFS Broken 999.9 GB disk2s2
Update: There seems to have been a misunderstanding about this question. I do not want to find out what's wrong' with my disk I named "Broken". It appears to work fine. I also reformatted it several times. I want to know how to tell OS X to mount a specific disk at boot. I named the disk "Broken" because it doesn't mount automatically, not because I have any problems with it as such and nor are there any error messages. Just forget I mentioned the disk and answer the question how to tell OS X which disks to mount at boot, if you know the answer. Thanks.