Windows 10: Hard drives cannot be accessed after switch from Win7 to Win10

Discus and support Hard drives cannot be accessed after switch from Win7 to Win10 in Windows 10 Installation and Upgrade to solve the problem; Hello. I am a victim of an apparently rare bug. I wanted to try out Win10 as a partition for a dual boot option (Since some games run better on Win10... Discussion in 'Windows 10 Installation and Upgrade' started by Schneider47, Sep 29, 2018.

  1. Hard drives cannot be accessed after switch from Win7 to Win10


    Hello. I am a victim of an apparently rare bug.


    I wanted to try out Win10 as a partition for a dual boot option (Since some games run better on Win10 than Win7).


    I heard rumors of Win10 being incredibly agressive but I had no idea how much. Win10 tried to eat and destroy my Win7 partition by messing with, I'm not sure, system files ? Apparently everyone on the web are saying that it's impossible to have a dual boot of Win7 and Win10 because Win10.


    Then I realized that out of 2 SSDs and 3 hard drive, 1SSD and 2 hard drive could not be accessed anymore. No matter what. I tried to boot with win10, I tried to boot with Win7, it didn't work.


    I bought an USB > SATA adapter to try and see if it would work that way, it doesn't.


    This is what Disk Management shows me for one of my hard drive when linked through the USB > SATA adapter.


    Hard drives cannot be accessed after switch from Win7 to Win10 09764e9b-d836-4d9e-ac83-d2d98386a7fe?upload=true.png


    At first I thought it could have been a virus, one of those locking trojan that makes you pay to unlock your hard drive, but it really doesn't look like it. No prompt, no infection, Malware Bytes, Rogue Killer, Avast... No information whatsoever.


    What is going on ?


    I have several friends that have had troubles with Win10 and had to go back to Win7 because of a lot of problem with programs, drivers for hardware, but I never heard of problems for hard drives.


    I have now deleted the Win10 partition but am left with 3 crippled drives.


    Can someone please help me ?


    Thank you.

    :)
     
    Schneider47, Sep 29, 2018
    #1
  2. tonistein Win User

    Sharing drives with Win7 & Win10

    My system is running both Win7 & Win10 on different SSD. There are 2 more HDDs of 2TB each in the PC. After using them in Win10 & then switch back to Win7 the 2HDDs will be scanned at bootup over & over again. Those data created in Win10 are not accessible
    in Win7.

    Then I got an USB flashdrive 64Gb created in Win7 & then used in Win10. After that it can't be accessed in Win7 anymore. Message say to format the drive before usage
     
    tonistein, Sep 29, 2018
    #2
  3. tonistein Win User
    Sharing drives with Win7 & Win10

    There's nothing wrong with the hard disks. If I use them with Win7 alone there's no boot scanning. The moment I share with Win10 & switch back to Win7 then the disks have to be scanned. I ever tried to skip the scan but after bootup the disks are not accessible
    in Win7. Those USB flashdrive that I created in Win7 & then used in Win10 which I transferred more data inside is not accessible in Win7 again. It say to format the flashdrive
     
    tonistein, Sep 29, 2018
    #3
  4. tonistein Win User

    Hard drives cannot be accessed after switch from Win7 to Win10

    Sharing drives with Win7 & Win10

    I uncheck the Fast Startup. Then I shutdown the system & connect an empty hard disk & start up again. Then I format the disk & transferred a few Gb of data to the new hard disk & shut down. After that I swap over to Win7 & startup. Now I can access everything
    in the hard disk. Then I transferred 50Gb of pictures & videos to this disk & shutdown. I switch over to Win10 & I could only see the previous data created in Win10 but not the 50Gb of pictures & video from Win7. Back to square one.

    In Win7 the new hard disk register at 20% usage but in Win10 it's only 2%

    There's something different between Win10 & the rest of the older OS

    Then I did a restart & this time there's a boot scanning of the new hard disk. After that I can access all the new data from Win7 & can play all the videos too. I shutdown & switch to Win7 & there's a boot scanning again. Now able to access everything. Why
    do the hard disk need to scan at bootup in order to be accessed?

    If I share my 2pcs of 2TB hard disks with Win10 a lot of time will be spent on boot scanning. Is there any way to go around this? Until then Win7 is still my primary working system
     
    tonistein, Sep 29, 2018
    #4
Thema:

Hard drives cannot be accessed after switch from Win7 to Win10

Loading...
  1. Hard drives cannot be accessed after switch from Win7 to Win10 - Similar Threads - Hard drives cannot

  2. Upgrading from Win7 to Win10, a hard drive question

    in Windows 10 Installation and Upgrade
    Upgrading from Win7 to Win10, a hard drive question: I have an old PC running Win7 that cannot be upgraded to 10 because of the BIOS not supporting Win10.I have purchased another PC with Win10 installed, so the new PC BIOS is Win10 compatible.I'd like to be able to avoid having to reinstall all the software that I have on my...
  3. Is there any way to get Win10 to see a hard drive from Win7?

    in Windows 10 Drivers and Hardware
    Is there any way to get Win10 to see a hard drive from Win7?: I have a 3TB hard disk that was my archive drive for all the video and audio media files on my Media-Centre PC which is a Win7 OS When I installed it as an internal drive on my current machine it is connected in the BIOS but Win10 OS it does not show in File Explorer, Disk...
  4. Cannot access my hard drive after upgrade

    in Windows 10 BSOD Crashes and Debugging
    Cannot access my hard drive after upgrade: Hi, i upgraded my dell XPS8700 from windows 8.1 to windows 10 and it was working fine till i switch the computer off and after i turned it back on the next day i could not access the hard drive through any means, the hard drive is not showing. ive ran the hardware diagnostics...
  5. Hard drive with Win10 keeps crashing to hard drive with Win7

    in Windows 10 BSOD Crashes and Debugging
    Hard drive with Win10 keeps crashing to hard drive with Win7: Hello, I'm not sure if this is even a Windows issue but I thought I'd try to see if maybe anyone can shed some insight as to what the heck is going on with my computer! I have a HDD with Win7 installed and as a partition from way back when. I've since gotten a SSD with...
  6. Reinstall Win10 from Win7. New hard drive; microsoft won't accept Win7 key

    in Windows 10 Installation and Upgrade
    Reinstall Win10 from Win7. New hard drive; microsoft won't accept Win7 key: Trying to reload Windows 10 Pro on machine with new hard drive but same MOBO. Win10 originally loaded via free upgrade from valid Win7 product key. Using MediaCreationTool1909.exe to download/load reload but I get an 'invalid' response after entering original Win7...
  7. after the win7 to win10

    in Windows 10 Installation and Upgrade
    after the win7 to win10: I see where everyone is talking about the oldwindows.folder, I don't have or have never seen it but I do have this "windowss7_os(C:)" that is part of my index under this pc. I had for the longest time 2 document folders. I did a search for the oldwindows.folder and the...
  8. will win10 accept a separate hard drive with bootable win7 on it?

    in Windows 10 Drivers and Hardware
    will win10 accept a separate hard drive with bootable win7 on it?: In the past few days, win10 seems to have serious issues with that win7 drive plugged into the sata port? So much so that I wiped the win10 partitions and did fresh install. Prior to the fresh install win10 refused to boot to the desktop if that other win7 drive was plugged...
  9. Cannot Go back to Win7 from Win10

    in Windows 10 Installation and Upgrade
    Cannot Go back to Win7 from Win10: When i navigate to settings>Recovery>Go back to Win 7, I click the "Get Started" button but nothing opens or occurs at all. I am the only account on the PC with full admin rights. Attached is a screenshot of my user list [img] 57537
  10. cannot upgrade from win7 to win10

    in Windows 10 Installation and Upgrade
    cannot upgrade from win7 to win10: I have 6 computers at my premises 4 ran windows 8.1 pro and two currently running win 7 HP. Now all the installations are fully activated and full RETAIL versions and upto date with all updates. Because my broadband (LOL) connection is very slow (sub 2 Meg ) it would take...