+ 0 Votes Yes you should be able to markp24 Updated - 3 years ago Hi, if you open the Dell 4700 system case, you will see a spot to mount the second hard drive and a power pigtail for it, you will need to reuse the SATA cable from the old pc and connect it between the motherboard and the drive. I have listed the user manuals that show you how to open the case, and do the hard drive upgrade at the bottom of this message. I just want to confirm this is a dimension 4700 not a 4700c, the C case is much smaller and you cannot add a second drive as it only has one SATA port and the power supply doesnt have the additional power pig tail, let alone a location to mount the drive. user manual for 4700c http://support.dell.com/support/edocs/systems/dim4700c/en/SM/techov.htm#wp1052632user manual for 4700 http://support.dell.com/support/edocs/systems/dim4700/sm/techov.htm#wp1052788 + 0 Votes Hey Nice work!! You did it!! markp24 3 years ago Im glad to hear you figured out the sata setting in the bios,. good work! + 0 Votes Go into the CMOS/BIOS setup RayFoxxe 3 years ago You should check first into your system's CMOS/BIOS by pressing the corresponding button to access them (usually F1, F2, or the Delete button when you boot up your computer, if you know how to work on CMOS/BIOS) Then go to the Boot Menu and locate a menu called Boot Priority or Boot Setup. Next, once you get into the boot priority menu, it should display a couple of options there like 1st Boot - 2nd Boot - ect.. Your 1st Boot device must be set to your original hard disk drive device or set to the name of the HDD you have. (that would be your C drive). If it's set to that then there's no problem in booting up. If not, set the 1st boot priority to your original HDD. Exit and Save on CMOS/BIOS and boot your computer normally. + 0 Votes Keep it simple YoungJules 3 years ago From the kind of questions you're asking, I would guess you're not comfortable with all that CMOS/BIOS nonsense. My advice is to just add in the drive, most likely it'll appear as the 2nd drive in your system (if there's only one drive in there to start with, that one's likely to be on the primary sata connection). The system WILL NOT try to boot from both drives at once. The worst that can happen is that it'll try to boot from your old 80G drive, but I think this is *very* unlikely. Best of luck! + 0 Votes With Sata, it will be added as a second drive markp24 3 years ago Hi, I would agree with "YoungJules" with SATA , the boot order is set in the bios, so as long as you dont change the sata cable connections, and you just add the additional sata drive to the empty sata port on the mother board, it should just boot normally and add the new drive as the next free drive letter in windows (IE D or E or F,...) let us know how it goes. + 0 Votes Hey Nice work!! You did it!! markp24 3 years ago Im glad to hear you figured out the sata setting in the bios,. good work!