Windows 10 upgrade from Windows 7 questions


  1. pookienumnums
    Posts : 2
    windows 7
       New #1

    Windows 10 upgrade from Windows 7 questions


    Hello !

    I want to buy windows 10 today. I will upgrade my desktop PC from windows 7. I currently have 2 drives my SSD drive which is drive C: and my hard drive which is baclkup drive E:

    If I buy and download and install Windows 10 will it install onto drive c: and leave drive e: alone? Can I put anything I want to save to drive e: and the files will be fine?

    Will installing Windows 10 delete everything on drive c:

    Thank you so much for any help
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  3. dalchina
    Posts : 42,991
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #2

    Hi, first, if you're happy with the edition of Windows you will get, you should still be able to upgrade for free.

    If you wish to clean install using your Windows license, you can do that too.

    Upgrade guide and upgrade paths:
    Upgrade to Windows 10
    - includes lots of links for how to find out what went wrong...

    A clean install means deleting existing Windows - not data- partitions and installing to unallocated space.

    An upgrade install should only affect your system disk.

    To perform a clean install you boot from a Win 10 bootable medium.

    To upgrade, you log in and then run setup.exe either from a mounted iso file or from the bootable medium.

    Otherwise, upgrade is, of course, offered by Windows update.

    Data partitions are not affected. However, given that Windows 10 creates some small extra partitions when installing, it is much the safest to only have your system disk connected. It is possible in some scenarios that a Win 10 partition may be created in empty space on a different drive.


    Please also see my comments and useful links posted here on a Win 7-Win 10 upgrade:
    Cannot Install Win10 on older system
    post #3
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  4. Berton
    Posts : 14,020
    Win10 Pro and Home, Win11 Pro and Home, Win7, Linux Mint
       New #3

    To add about disconnecting the second drive, the BIOS may have a setting for RAID/AHCI which can allow Win10 to put part of itself on both drives and removal or failure of the second drive will prevent booting [ran into just that a couple weeks ago].
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  6. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #4

    Hi,
    Remove any additional hdd/ ssd's if the data on it is important to you before mounting the 10 iso for inplace upgrade or clean installing.
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  7. Bree
    Posts : 31,666
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       New #5

    pookienumnums said:
    I want to buy windows 10 today. I will upgrade my desktop PC from windows 7...
    Welcome to TenForums pookienumnums.

    With Windows 7 fast approaching end of support, there is now a TenForums tutorial specifically for Windows 7 users who want to upgrade. See...

    Upgrade to Windows 10 from Windows 7 for Free
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  8. pookienumnums
    Posts : 2
    windows 7
    Thread Starter
       New #6

    Thank you so much for the replies !
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