Windows 10: Clean install w10 from w8 Solved

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  1.    15 Aug 2017 #1

    Clean install w10 from w8


    Hi guys, I'm stuck at a point where I cant go back nor proceed further, please assist me..
    My scenario is i tried clean installation of w10 but as my partition is in GPT format it is not accepting, what I did as a mistake is I formatted the drive having w8, now my pc isnt booting up.. i found others ways to convert gpt to MBR but in that way ill loose the data I had stored in E drive which is important.. please help me with any idea that you have in mind so i can recover my files also I tried installing w8 but its giving the same error - cant install in GPT
    (I have access to command prompt and i believe that is the only way out, if there is any other possible way then please assist) thanks
      My ComputerSystem Spec


  2. Posts : 5,978
    Windows 10 Pro Build 1709
       15 Aug 2017 #2

    Hi Joyt. Welcome to the TenForums @Joyt

    Agree, first get your data. Boot with this and you can use normal windows tools to copy off device.

    Windows 10 Recovery Tools - Bootable Rescue Disk

    Now I'm not exactly following what you did? Did this PC have Windows 10 on it and then you decided to do a clean install or did it have 8.x and you decide to do a clean install of 10?


    Ken
      My ComputerSystem Spec

  3.    15 Aug 2017 #3

    You need to disable CSM booting in UEFI (BIOS) Settings and boot your USB flash drives in UEFI mode.
      My ComputerSystem Spec

  4.    15 Aug 2017 #4

    Joyt said: View Post
    Hi guys, I'm stuck at a point where I cant go back nor proceed further, please assist me..
    My scenario is i tried clean installation of w10 but as my partition is in GPT format it is not accepting, what I did as a mistake is I formatted the drive having w8, now my pc isnt booting up.. i found others ways to convert gpt to MBR but in that way ill loose the data I had stored in E drive which is important.. please help me with any idea that you have in mind so i can recover my files also I tried installing w8 but its giving the same error - cant install in GPT
    (I have access to command prompt and i believe that is the only way out, if there is any other possible way then please assist) thanks


    Step One: Back up all data. Just disconnect your E: drive for now,
    Step Two: Upgrade Windows 8 to Windows 10, that way you will get the free upgrade.
    Step Three: Do a clean install of Windows 10. It will only install onto your C: drive.
    Step 4: Reconnect your E: drive.
      My ComputerSystem Spec

  5.    15 Aug 2017 #5

    Rocky said: View Post
    Step One: Back up all data. Just disconnect your E: drive for now,
    Step Two: Upgrade Windows 8 to Windows 10, that way you will get the free upgrade.
    Step Three: Do a clean install of Windows 10. It will only install onto your C: drive.
    Step 4: Reconnect your E: drive.
    Except it sounds like his E: drive is just a data partition and not a separate physical drive.
      My ComputerSystem Spec

  6.    15 Aug 2017 #6

    Not good. This the 21st century and the mantra is
    back up
    back up
    back up

    There are a million things that can happen to a computer and no one wants to lose their personal data.
      My ComputerSystem Spec

  7.    15 Aug 2017 #7

    Thanks everyone for their valuable feedback @Caledon Ken @NavyLCDR @Rocky

    The problem is I cant backup now as my laptop isn't booting up as I have erased w8 and now it is asking me to change disk format to MBR. and Ken I had w8 on my system i was clean installing w10 so I thought as I'm installing w10 I formatted the C drive, My data is in E drive, now without the computer starting I cant get my data back. Rocky can you please suggest how do i disconnect E drive ? ( E drive is a partition I had in W8 and I hadnt backed up in any external drive) what I was thinking is if there was a possible way where I can Change only C drive from GPT to MBR format through CMD so Ican install W10, or is it possible to back up the drive using CMD ? and what I was also thinking (as the last method) is to get a SATA to USB converter and connect to other system and manually copy the files and then convert disk from GPT to MBR. please suggest if there is any other way out..

    Thanks guys
      My ComputerSystem Spec

  8.    16 Aug 2017 #8

    Joyt said: View Post
    Thanks everyone for their valuable feedback @Caledon Ken @NavyLCDR @Rocky

    The problem is I cant backup now as my laptop isn't booting up as I have erased w8 and now it is asking me to change disk format to MBR. and Ken I had w8 on my system i was clean installing w10 so I thought as I'm installing w10 I formatted the C drive, My data is in E drive, now without the computer starting I cant get my data back. Rocky can you please suggest how do i disconnect E drive ? ( E drive is a partition I had in W8 and I hadnt backed up in any external drive) what I was thinking is if there was a possible way where I can Change only C drive from GPT to MBR format through CMD so Ican install W10, or is it possible to back up the drive using CMD ? and what I was also thinking (as the last method) is to get a SATA to USB converter and connect to other system and manually copy the files and then convert disk from GPT to MBR. please suggest if there is any other way out..

    Thanks guys

    Thanks everyone for their valuable feedback @Caledon Ken @NavyLCDR @Rocky

    The problem is I cant backup now as my laptop isn't booting up as I have erased w8 and now it is asking me to change disk format to MBR. and Ken I had w8 on my system I was clean installing w10 so I formatted the C drive, My data is in E drive, now without the computer starting I cant get my data back. and yes Rocky E drive is the partition of HDD, also NavyLCDR even if disable CSM booting in UEFI, it is asking to change disk format from GPT to MBR and to change that i need to format complete HDD. what I was thinking is if there was a possible way where I can Change only C drive from GPT to MBR format through CMD (without formatting) so I can install W10, or is it possible to back up E drive using CMD ? and what I was also thinking (as the last method) is to get a SATA to USB converter and connect to other system and manually copy the files and then erase complete HDD and convert disk from GPT to MBR. please suggest if there is any other way out..

    Thanks guys
      My ComputerSystem Spec


  9. Posts : 1,665
    Windows 7 Pro x64 Windows 10 Pro x64 Creators Update
       16 Aug 2017 #9

    You can't disconnect E if it`s just a partition, you just have to get your data of it.

    I don't understand why you can't just install 10 in the same manner as 8 was installed, either MBR or GPT, why the change ?
      My ComputersSystem Spec

  10.    16 Aug 2017 #10

    AddRAM said: View Post
    You can't disconnect E if it`s just a partition, you just have to get your data of it.

    I don't understand why you can't just install 10 in the same manner as 8 was installed, either MBR or GPT, why the change ?
    EXACTLY, even I'm confused why it is asking me to change the disk format.. I also tried installing W8 ( same disk is used to install for the first time) It is asking me to change the disk format to MBR even at that time.
      My ComputerSystem Spec


 
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