how do i set my jumpers so i can split 40 GB in to TWO 20 GB'S i have an 550 MHz pc but the bios only go's up to 32 GB's it let's at less that much. dose any budy know how i can do this?

That isn't a matter of jumpering a drive. If you want 2 partitions on that drive then you will have to partition it with Fdisk or CFdisk.
You can have up to 3 primary partitions on a drive the rest will have to be logical or extended partitions.

As long as the /boot partition is below the bios limit, so that the kernel and initrd file can be read from the drive, you don't have to worry about the limit, because linux uses its own ide drivers and doesn't depend on the bios. The bios is used to load in the kernel. If the ide drivers are not compiled into the kernel, they will be located in the initrd file. This file is a compressed ramdisk, which contains the drivers that you need to boot up, that are loaded as modules.

The jumpers for an ide drive (I'm assuming that you aren't using scsi ) pertain to whether a drive is master or slave or auto-detect. They won't divide a drive into two. Actually, the entire drive has its own device, /dev/hda, even if the drive is partitioned. This is the device that a program like qtparted would use to repartition a drive for example.

If the 32 GB limit is a limit of the ide controller, then you would have a problem, and might want to purchase an ide controller board. ( Now I'm assuming that you are using a desktop ) IDE controller pci boards are not expensive, and you could get one that could handle 133 mhz transfers. This would allow you to use the DMA 5 mode of transfer which could improve performance. Doing this, and adding ram, if possible may make your machine seem like new. Especially if you use KDE or Gnome.

well i'll buy ah ide controller if they are that much i guess i could buy ah ide controller that will be fine

A new controller can be had for under $20. Look in your packaging for the hard disk that you installed, because sometimes they come with a controller card. However this is less often the case because new computers and handle the large drives.

I don't remember if the MCC configuration has a location to set the DMA mode. You can use the 'hdparm' command to set it. The mode that you can set depends on both what the controller supports as well as what the drive supports. Googling with the model number of the drive will probably indicate what is supported. Most likely it will support 133 Mhz ultra dma transfers. If so, getting a controller card that also supports this will allow faster drive access. You can also use the hdparm command to set the DMA mode of your cdrom drive, however, the ATAPI speeds are lower, and you will be limited to either 33 or 66 Mhz transfers, however this will be an improvement over the PIO mode speeds.

One clarification on the response by teckk. You can have 4 primary partitions. If you want more than 4 partitions, then the 4th partition is an extended partition that contains the rest of the partitions. That's why if you use extended partitions, the numbering scheme goes hda1, hda2, hda3, hda5, hda6. There is actually a 4th partition , but it contains hda5 and hda6.