Cannot use fourth IDE HDD with FC3 ?

[Bruno Wolff III]

On Mon, Feb 20, 2006 at 23:53:47 +0700,
  Amrit Angsusingh <amritangs at gmail.com> wrote:
> I used pentium 4 mechine with 256 Mb ram and fedora core 3 for web server
> and four IDE HDDs [160 Gbx4] on both primary ans secondary IDE. The bios
> also detected all 4 HDD but after starting FC3 the system mount secondary
> slave HDD  /dev/hdd1 as /mnt/idedisk1
> /dev/hda1               /                       ext3    defaults        1 1
> none                    /dev/pts                devpts  gid=5,mode=620  0 0
> none                    /dev/shm                tmpfs   defaults        0 0
> /dev/hdc1               /mec                    ext3    defaults        1 2
> none                    /proc                   proc    defaults        0 0
> none                    /sys                    sysfs   defaults        0 0
> /dev/hdb1               /var                    ext3    defaults        1 2
> /dev/hda2               swap                    swap    defaults        0 0
> 
> /dev/hdd1   /mnt/idedisk1           auto  amconsole,exec,noauto,managed 0 0
> 
> which appeared to be the read only device. I cannot umount this device and
> mount it to /dev/hdd1  ext3   . I would like to use this HDD to store the
> nackup data. Does any one tell me how to do this?

Have you put a file system on it yet? If not you can use mkfs to do that.