Hello, I'm using slackware 11, and I have three partitions, swap, ext3 (where linux are) and ext3 (wich I couldn't find).

How to find this partition, do I need it mount or smtg? And also I have two cd-roms, one I can find other not :/

P.S. sorry for my english language

Yes you will have to mount your partition.

First find it with fdisk -l as root

Then mount it with something like:
mount -t ext3 /dev/hda5 /mnt/mypartition
(replace your own partition and directory in place of 'hda5' and 'mypartition')

Your second CD may be there as hdd or something. Look for it in the /device directory. It should be there as /dev/hdd or something, or as a link to it.

Then mount it with a similar command:
mount -t iso9660 /dev/hdd /mnt/cdrom2
(with appropriate changes of course)

I think i done it, but is there any way to add cdrom and new partition to storage media? That I can see new partitinio info, usage etc...

You can add entries to your /etc/fstab file, line by line, for each device you want mounted automatically at boot time, and reboot.
The format of the file is like:

device mount-point filesystem options
eg:

/dev/hda5 /mnt/data ext3 default 0 0

OR

/dev/hdd /mnt/cdrom2 iso9660 default 0 0

See the manual for the mount command and also for the fstab file format:

man mount

man fstab

see your /etc/fstab file with 'cat /etc/fstab' and then add the new entries with an editor.

Be very careful with this file. Make a copy first and then edit it.