Installing new OS on new drive


  1. gbu
    Posts : 119
    Windows 11 Pro
       New #1

    Installing new OS on new drive


    Im going to be installing a new motherboard with new Internal Solid State M.2 drive which im going to install the OS on.

    Currently Win10 is on Local Disk C Drive on a Sata HD.

    Ill disconnect this drive first then install the OS on the new drive and im presuming this will create a new 'C Drive to install it on.

    What happens when i plug the old Sata drive back(as i want to then format and use as storage, but dont want to wipe it until im back up and running on the new drive)
    Will it give me 2 options on boot up or will one prioritise over the other?
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  3. Samuria
    Posts : 8,111
    windows 10
       New #2

    Yes it will make a c drive and you can plug the old drive in and format
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  4. pparks1
    Posts : 2,068
    Windows 10 Pro
       New #3

    gbu said:
    Ill disconnect this drive first then install the OS on the new drive and im presuming this will create a new 'C Drive to install it on.
    This is correct.

    gbu said:
    What happens when i plug the old Sata drive back(as i want to then format and use as storage, but dont want to wipe it until im back up and running on the new drive)
    It will still boot from your SSD, and will see the old drive as a secondary drive, like D: or E:
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  6. Megahertz
    Posts : 6,343
    Windows 11 Pro - Windows 7 HP - Lubuntu
       New #4

    Drive letters are assigned by the OS you're booting from.
    If you boot from the SSD, the windows partition on that drive will be C: and the Windows partition on the M.2 drive will be something else.
    If you boot from the M.2, the windows partition on that drive will be C: and the Windows partition on the SSD drive will be something else.
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