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2. Remove the computer cover if not already removed. 3. Remove the drive shelf. 4. Squeeze the tabs on each side of the hard-disk drive/bracket, and pull the hard-disk drive/bracket forward about one inch (see Figure 10). 5. Disconnect the power and interface cables from the back of the drive. 6. Lift the hard-disk drive/bracket away from the chassis. 7. Lay the hard-disk drive/bracket on an antistatic surface with its bracket facing up. 8. Remove the four screws securing the hard-disk drive to the bottom of the bracket (see Figure 11). Figure 11. Drive Bracket Removal 1 Drive shelf 2 Release tabs (2) 1 Drive bracket 2 Release tabs (2) CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you remove a drive, see the other precautions in "Precautionary Measures." NOTE: This procedure assumes that you have removed the drive shelf from the chassis. Figure 12. Hard-Disk Drive/Bracket Replacement To install a replacement hard-disk drive in the chassis, perform the following steps. NOTICE: To avoid possibly damaging the drive by electrostatic discharge (ESD), ground yourself by touching an unpainted metal surface on the back of the computer. NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. 1. Prepare the drive for installation. Check the documentation for the drive to verify that it is configured for your computer system. 2. If not already done, remove the computer cover. 3. If not already done, remove the drive bracket from the chassis. 4. Attach the new hard-disk drive to the bracket with the four screws you removed in step 8 of the previous procedure. 5. Reinstall the hard-disk drive/bracket in the chassis (see Figure 12). 6. Place the bracket so that the release tabs extend about one inch past the front of the chassis, and align the tabs on the bottom of the bracket with the hooks on the chassis floor. 7. Slide the bracket toward the back of the chassis until the tabs snap under the hooks (see Figure 12). The bracket release tabs should also snap into the front of the chassis. 8. Connect a power cable to the power input connector on the back of the drive, and connect an EIDE cable to the interface connector on the back of the drive (see Figure 13). Check all connectors to be certain that they are properly cabled and firmly seated. Figure 13. Hard-Disk Drive Cable Attachment 1 Drive 2 Drive bracket 3 Screws (4) 1 Tabs on bottom of drive bracket 2 Hooks on chassis floor 3 Drive bracket 4 Release tabs (2) CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you install a drive, see the other precautions in "Precautionary Measures." NOTICE: You must connect the blue connector on the EIDE interface cable to the IDE1 connector on the system board to avoid possible damage to your system. NOTICE: You must match the red-colored stripe on the EIDE cable with pin 1 on the drive's interface connector to avoid possible damage to your system. NOTICE: You must match the red-colored stripe on the EIDE interface cable with pin 1 on the IDE1 connector to avoid possible damage to your system. 9. If it is not already connected, connect the blue connector on the EIDE interface cable to the IDE1 connector on the system board. To locate the IDE1 connector on the system board, see "System Board Components." 10. Replace the drive shelf and connect the diskette and CD-ROM drive power and interface cables. 11. Replace the computer cover. Then reconnect your computer and peripherals to their electrical outlets, and turn them on. 12. Insert a bootable diskette into drive A. 13. Turn on the computer system. 14. Enter System Setup and update Primary Drive 0 (see the online System User's Guide for complete information on System Setup). After you update the system setup settings, reboot the system. 15. Partition and logically format your computer's hard-disk drive before proceeding to the next step. See the documentation for your operating system for instructions. 16. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information). 17. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive. For instructions, refer to the documentation that came with your operating system. 3.5-Inch Diskette Drive To remove the 3.5-inch diskette drive from the drive shelf, perform the following steps: 1. Press down on the release latch on the top left side of the 3.5-inch diskette drive. The 3.5-inch diskette drive will pop up slightly when the latch disengages. 2. Pivot the 3.5-inch disket...