Question about Dell Dimension 2400 PC Desktop

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Dell Dimension 2400 - Adding second HD

I am having a problem adding a second HD to my Dimension 2400.

Original HD is a 80 GB Maxtor DiamondMax Plus 9. Second HD is a 250 GB Western Digital WD2500AAJB. My goal is to run Windows XP on the WD HD with all my program files and use the Maxtor HD to hold data files.

I installed the WD HD and initialized it and formatted it through XP's disk management with no problem. Windows was recognizing both drives.

Now here's where things went wrong. I shut down the computer and disconnected th original Maxtor HD. I kept the new WD HD connected and installed XP SP2 on it. (I booted directly from the XP CD and installed it that way).

Now the computer will not recognize the old Maxtor HD. Even when I just connect the Maxtor HD without the WD HD, it won't let me boot. I can boot to the WD HD, but when I do, XP won't recognize the Maxtor HD. If I go to Disk Management, it shows the Maxtor HD as unallocated and won't let me initialize it.

I tried adjusting all of the jumper settings but to no avail. Is there something I am missing here? Is all of the data on my Maxtor HD comprimised?

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  • mark916 Nov 29, 2008

    Well, I think the problem is with my power supply. Because neither HD will boot and both are clicking a little. At first I thought the old HD (Maxtor) might be fried, but since the new HD (WD) is clicking too, I am thinking it's a power issue. Also, I can't boot from the CD either. It will spin a few times and then stop.

    So unless both my HDs and CD drive all crapped out simultaneously, it must be something else (either power supply or possibly the motherboard).

    Can the power supply on the Dimension 2400 be upgraded? Or does it have to be replaced with an OEM unit?



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I presume that the hard drives are ATA drives, and if the WD and Maxtor are installed on the same IDE cable then the boot drive, the WD HD needs to have the jumper set to Master or Master with Slave drive, and the Maxtor needs the jumper set to Slave drive.
If the computer on boot up doesn't recognise the boot drive the move the jumper to the CSL setting.

If the Maxtor is on the second IDE cable it does not matter if the jumper to either Master or Slave provided you do not have anything else connected to this cable. If you have a CD or DVD connected to the second IDE cable as well as the Maxtor HD then you need to check the devices on this cable (ie. the jumpers) are not set the same on both devices.

On boot up go into the BIOS and check that the master and slave devices are set to Auto (detect).

You should after booting up now see both hard drives and any CD/DVD.
The data on the Maxtor drive would include your original Windows and programs and data, you would need to remove these redundant files and programs to recover disk space.

If you can see on boot up all the hard drives and CD/DVD (as master and slave drives) but if you do not see the Maxtor drive from My Computer, then you need to delete the partition on the Maxtor drive, create a new partition, and format the drive, in this case you will not recover any of your original data.
To do this, you need to go to the Control Panel, Then Administrative Tools, then Computer Management then Disk Management. Right Click on Disk 1 (it should show a 80 Gb hard drive), delete the partition, then it would show this as an unallocated drive.
Right Click on this drive again and create a primary partition, follow the instructions and format the drive in NTFS file format.

Posted on Nov 29, 2008

  • Chris Hingee
    Chris Hingee Nov 29, 2008

    You can put any switch mode power supply in the computer provided it fits and has the same mounting holes and has the same power connectors. Suggest you select a unit equal or greater than the wattage of the existing unit.

    Before you purchase a new switch mode power supply, get hold of a multimeter, turn on your computer and measure the voltages of one of the 4 pin power connectors. Test the red and black wires, it should read 5.0 volts, then test the yellow and black wires, it should read 12.0 volts. The coloured wires are positive and the black wires are negative. The readings should be within 5% of the nominated voltages.

    There are other voltages (-12V, -5V, +3.3V) that require testing to determine if your power supply is OK but you need further info and equipment to test properly. If possible borrow a pwer supply to insert into your computer to test before you buy one.


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Set the jumper on the maxtor to cable select and see if that fix's things ?

Posted on Nov 29, 2008


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PC will not see Maxtor 80GB DiamondMax Plus 9 as seconary slave.


Two thing,

First, never use a Maxtor HDD as a slave to a CDROM/DVD, doesn't work and tends to cause stability issues. So try swapping the jumper on the CD/DVD to slave and setting the Maxtor to Master, this should get it working.

Second, if it is showing up as 33GB, you have the Jumpers set to limit capacity(designed to avoid troubles on older systems. If this is the case, you likely have a single jumper in the center row of pins between the power and data cables. If it only works as master at the moment, then you likely have the neter row(limit size pins) and the one closest to the data cable(Master Pin) both plugged in.

Change your DVD/CD to slave, remove the limiting jumper and ensure the Master jumper is installed on the Maxtor, then be sure the end connector on the ATA(likely marked master) is plugged into the Maxtor and the middle connector(Slave) is plugged into the DVD/CD, this should have you all fixed up.

Hope this helps FixYa,


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When i start my computer my drive (maxtor diamondmax plus 9) freezes and starts makeing a knocking voice...? do i have to get a new 1? or this can be fixed

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I dont know where to put jumper

I know this by heart ok this will take time but,
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Hope This Helps :-)

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