exchanging hard drives

rob314

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May 18, 2014
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4,510
I resently aquired 4 computers: 1 has windows 8 installed and the other 3 have windows 7. I am trying to do build 2 computers with the existing hard drives; one for me and one for my wife. I am trying to take her old windows 7 hard drive and put it in the machine that had the windows 8 (a bit more room for upgrades and a slightly better graphics card). I am also trying to take the windows 8 hard drive and put it the machine that had a different windows 7 hard drive (I am wanting to use the old windows 7 hard drive as a second drive as well as a third windows 7 hard drive). This machine has A LOT more room for upgrades and a great gaming graphics card.
First problem: I was able to add a widows 7 hard drive to the windows 8 computer as long as the first drive was the windows 8 hard drive (2 dives, with the original windows 8 hard drive as primary and the older windows 7 hard drive as an extra). I got that build to work. But when try and only have the windows 7 as the only hard drive (in the machine that originally had a windows 8 hard drive) the machine recognizes the drive (says its installed) but will not boot.
Second problem: I installed all three hard drives (windows 8 and 2 windows 7) into a machine that originally had windows 7. The machine will recognize all three drives IF the original windows 7 hard drive is the primary. But when I try and set the windows 8 hard drive as the primary all I get is a dos prompt after the DELL logo goes away (all machines are DELL).
Any suggestions? I'd really like to put the my wife's windows 7 hard drive in my windows 8 tower and my windows 8 hard drive in an older and much larger windows 7 tower.
Can this be done?
 
Solution
All the hard drives have OS's that have drivers for their original systems, when put in a system with different hardware, they don't bot. Also OEM OS's (like Dell) are tied to the original motherboard, again a different (model) mobo & they won't boot. Some times Dell uses the bios to 'ID' the OS to the mobo, in this case, if the HD were prepped correctly (you have to remove the drivers - google this or maybe some one here can help) they would work in other Dell systems. Odds are however, you are fighting a losing battle.

USAFRet

Titan
Moderator
Ideally, you put whichever drives you want in whatever system, and do a clean install of whatever OS you want in each.

For a couple of reasons.
1. As you have seen, simply swapping the drives around with the OS already installed often does not work.

2. If these are used machines, a fresh install of the OS is always recommended. You never know what the previous owner had on them.
 

jimpz

Distinguished
Jan 20, 2012
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0
19,360
All the hard drives have OS's that have drivers for their original systems, when put in a system with different hardware, they don't bot. Also OEM OS's (like Dell) are tied to the original motherboard, again a different (model) mobo & they won't boot. Some times Dell uses the bios to 'ID' the OS to the mobo, in this case, if the HD were prepped correctly (you have to remove the drivers - google this or maybe some one here can help) they would work in other Dell systems. Odds are however, you are fighting a losing battle.
 
Solution

rob314

Reputable
May 18, 2014
2
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4,510
All of the computers are mine and have only ever been mine (i just got back two of them... long story, but I know there weren't used by anyone else. Thanks for the advice on that though.
I'm thinking you are right though jimpz, it is a losing battle. Thanks for your advice.