Help please on downgrading Win8 Pro to Win7 Pro on new VAIO


  1. martin0193
    Posts : 4
    Windows 8 Pro 64 Bit
       New #1

    Help please on downgrading Win8 Pro to Win7 Pro on new VAIO


    Hi all Just bought a new VAIO laptop, with Win8 Pro (as I knew I was going to downgrade to Win7 Pro). So far I have done the following: Found various guides (not on this site!), which seemed to say it was quite straightforward, and that I need a Win7 product key. Sony haven't provided me with one, and have gone silent when I asked them again - they told me it should be with the documents provided with the machine. Downloaded all Win7 drivers available for this model on Sony's support website. Found more detailed guides here on SevenForums, which seem to say that I don't need a Win7 product key, and that the process isn't quite so straightforward. Following the instructions at Downgrade Windows 8 to Windows 7 I have now done: Created a recovery drive on a spare USB external HDD turned secure boot off changed boot mode from UEFI to legacy when I insert the Win7 Pro DVD, it runs as far as the screen in 6A, Where do you want to install Windows. Here is where I get stuck, as I have 6 partitions and I don't know which ones to delete or leave behind. the partitions listed are as follows: Disk 0 Partition 1: SONYSYS 260.0 MB 235.0 MB OEM (Reserved) Disk 0 Partition 2: Windows RE Tools 1.4 GB 615.0 MB OEM (Reserved) Disk 0 Partition 3 260.0 MB 210.0 MB System Disk 0 Partition 4 128.0 MB 128.0 MB MSR (Reserved) Disk 0 Partition 5 431.2 GB 386.5 GB Primary Disk 0 Partition 6 32.5 GB 3.2 GB OEM (Reserved) Whichever of them I select, the 'Next' button is greyed out. On clicking for reasons, they are all because the disk is GPT partition style, and some for additional reasons like being reserved for OEM, or Microsoft Reserved (MSR) or EFI System Partition (ESP). My questions are: Can someone tell me which partitions to delete? I'm a bit nervous about deleting partitions as I have never done it before, and I don't want to screw up my brand new laptop (which is actually a work machine, paid for by my company). Will the Recovery drive put them all back in (if it all goes horribly wrong and I have to revert to the awful Win8)? Thanks awfully - I have been on the verge of sending this laptop back a few times this week, but this looks like it might be salvageable.
    Last edited by martin0193; 22 Nov 2013 at 08:16. Reason: trying to improve formatting - to no avail
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  3. theog
    Posts : 11,408
    ME/XP/Vista/Win7
       New #2

    it runs as far as the screen in 6A,
    6)
    A) Delete all partitions. (in Drive Options)
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  4. martin0193
    Posts : 4
    Windows 8 Pro 64 Bit
    Thread Starter
       New #3

    Thanks. Will my Win8 recovery drive work (ie get it back to the state it was shipped in) if I mess this up?
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  6. martin0193
    Posts : 4
    Windows 8 Pro 64 Bit
    Thread Starter
       New #4

    And one more thing - do I need to get Sony to tell me the product key? Or does Win7 magically pick it up from within the BIOS? EDIT: Just found this page - which answers this question. Downgrade rights details and FAQ
    Last edited by martin0193; 22 Nov 2013 at 11:15.
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  7. theog
    Posts : 11,408
    ME/XP/Vista/Win7
       New #5

    martin0193 said:
    Thanks. Will my Win8 recovery drive work (ie get it back to the state it was shipped in) if I mess this up?
    On my Grandkid's the Recovery disks work OK for me.

    Help please on downgrading Win8 Pro to Win7 Pro on new VAIO-sony-recovery-make-dvd-usb-003-theog.png
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  8. theog
    Posts : 11,408
    ME/XP/Vista/Win7
       New #6

    martin0193 said:
    And one more thing - do I need to get Sony to tell me the product key? Or does Win7 magically pick it up from within the BIOS? EDIT: Just found this page - which answers this question. Downgrade rights details and FAQ
    YES, if your SONY came with Windows 8 Pro installed, you have downgrade rights.
    But you would need to have the SONY downgrade rights DVD to install Windows 7 Pro, which SONY are REFUSING TO SEND OUT.
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  10. gregrocker
    Posts : 50,642
       New #7

    Just be sure to make the Win8 Recovery Disks, and if possible save a secondary backup image using the latest free version of Paragon Disk Manager which works to restore UEFI HD's.

    Then boot into BIOS setup to disable Secure BOot and enable CSM or Legacy Boot.

    In some cases you can shrink C to install Win7 in UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums so you can try Win7 on the drive even though Win8 may not boot if Secure Boot is disabled. It may even configure a Dual Boot.

    But in most cases it's required to delete all partitions during a booted Win7 install, either in UEFI or Legacy Mode. If UEFI is a problem then these steps will normally work to Bypass UEFI to Install WIn7
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  11. martin0193
    Posts : 4
    Windows 8 Pro 64 Bit
    Thread Starter
       New #8

    Thanks for all your help


    Hi, Just wanted to say a big thank you for all your comments. I successfully performed the downgrade on Monday, and even got Win7 licensed, after an hour on the phone and 6 different Microsoft representatives. All drivers installed, Office 2013 downloaded, and ready to import files etc from the old machine. Couldn't have done it without you. Martin
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