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Windows 7: SSD install - can I keep OS on current HDD ?

11 Jul 2011   #1
fergiet

Windows 7 64 bit
 
 
SSD install - can I keep OS on current HDD ?

Hi

Installing W7 64 bit to new ssd. The current hdd will still have the current Win7 OS on it. As long as I have the bios boot set to the ssd can I leave the other win 7 OS on the mechanical drive in case of problems ?

Will this cause any problems ?


My System SpecsSystem Spec
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11 Jul 2011   #2
Solarstarshines

Windows 7 Home Premium 64bit sp1
 
 

It shouldn't cause problems if you have it configured for dual boot but most of the time it is two different OS

Is there a real reason why you need the same Os on another drive

I would think it would be easier to image the drive if it is small enough to fit on the SSD and use the other HD as the back up for more information you don't have to but if you are looking to boost perfomance i would no doubt just start over best results

clean OS clean drive can't beat that with a baseball bat
My System SpecsSystem Spec
11 Jul 2011   #3
essenbe
Microsoft MVP

Windows 7 Enterprise X64/Windows 10 X64
 
 

Solarstarshines is correct about a clean install. But, you need to disconnect all other hard drives when doing the clean install. This has other reasons, but it also keeps you from dual booting where it asks do you want boot into windows7 or windows7. You can boot into the old hard drive anytime you want by using the one time boot key.
My System SpecsSystem Spec
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11 Jul 2011   #4
gregrocker

 

Remember only one activation at a time per Product Key. So you'll likely need to delete the old OS if you use it's Product Key to activate the new install, or just use another key.

Be sure to get everything transferred over if you activate the new OS with the old key - you have 30 days to do so.
My System SpecsSystem Spec
11 Jul 2011   #5
GeneO

Windows 10 Pro. EFI boot partition, full EFI boot
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Remember only one activation at a time per Product Key. So you'll likely need to delete the old OS if you use it's Product Key to activate the new install, or just use another key.

Be sure to get everything transferred over if you activate the new OS with the old key - you have 30 days to do so.

He can still keep the OS on the hard drive and not boot to it or activate it can't he? Why would he have to delete the old OS?
My System SpecsSystem Spec
12 Jul 2011   #6
gregrocker

 

Yes, even if the old OS loses activation and is unable to start it can still be used as an inert data partition.

However I lean against keeping intact OS's for storage purposes as they can present boot problems plus derail the System boot files during a Repair if not kept marked Inactive.

If he changes the key to the new OS the old OS may well hold activation since it is on the same hardware, but this cannot be counted upon plus it is not legal under the EULA.

There is a way to delete the OS files off the partition but it requires wrestling System file ownerships so its better to gradually move data off the partition to get rid of the old OS the correct way by deleting or formatting the partition it's on.
My System SpecsSystem Spec
12 Jul 2011   #7
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

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 SSD install - can I keep OS on current HDD ?




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