Windows 10: Dual boot and shared partition with RO access for only one OS

Discus and support Dual boot and shared partition with RO access for only one OS in Windows 10 Support to solve the problem; Hello, I've been stuck for a while and I'm looking for help. For a specific usage (...) on a laptop (Integrity protection on an OS partition while... Discussion in 'Windows 10 Support' started by cybermarsu, Mar 17, 2020.

  1. Dual boot and shared partition with RO access for only one OS


    Hello,

    I've been stuck for a while and I'm looking for help.

    For a specific usage (...) on a laptop (Integrity protection on an OS partition while another OS is running and hypervisor was not suitable) I had to create several partions on ONE single SSD Drive in order to :
    1) Install one OS W10 Pro 1909 (let me call it OS1) encrypted with bitlocker to protect it when OS2 is active
    2) Install a second OS W10 Pro (let me call it OS2) also encrypted with bitlocker (even if it was not mandatory)
    3) Create a 3rd partition called "data"
    I also need OS1 to be able to write on it while OS2 only need to read from it.

    What i've tried :
    1) use diskpart and set the selected volume on OS2 as readonly... => works fine but booting on OS1 the volume stills as RO (and if i clear the attribute on OS1, it is also cleared for OS2)
    2) use diskpart and set the selected volume on OS2 as readonly + add a registry entry (HKLM\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies\WriteProtect set to 0) on OS1 to remove the readonly attribute. It fails (stills read only)...

    Do you have any idea to set this partition as Read Only only for OS2 ?!!!

    => this is my main need but if you have a tip for that additional problem it would be the icing on the cake : I've tried to set the attributes hidden for the OS1 system volume on OS2... (and wanted to do the reverse on OS1 for OS2), but when it's done I'm unable to have a functional dual boot (on the hidden OS volume)

    => I insist on the point that I'm working at volume/partition level as i only have ONE ssd disk...

    thank you in advance for your advice

    :)
     
    cybermarsu, Mar 17, 2020
    #1
  2. Solaris17 Win User

    Dual Boot?

    I can help here iv had both i used partition magic to split my HDD and i installed vista on one and xp was already on the other only problem is id watch out if i were you for some reason vista does not like to dual boot iv seen this on a couple of my machines and my buddys. so step one have xp installed step 2 find a partitioner of your choice i dont know of any except partition magic and the one included on xp...only thing is i dont think the one on xp will even partition them...then pop in your vista DVD and select the drive of your choice....the only thing i can think of that causes vista to hate dual booting sooo much is that when their are 2 OS's installed xp uses its own prog to list them on boot well vista uses a totally diff boot loader than the previous os's and i think they conflict the problems i hade were the standard missing windows folder missing HAL.dll and the nt one dont remember the name.....that and after your done vista and boot into xp things didnt like to start correctly specially if you scan disk with vista.
     
    Solaris17, Mar 17, 2020
    #2
  3. Dual booting OS

    Hi,

    I would like to install dual booting windows 10, both OS in same hard disc. I would like to confirm that no issue to have partition C and D in both OS and no access from each other?

    Thanks,

    Ratna
     
    RatnagopalSutha, Mar 17, 2020
    #3
  4. RS Z28 Win User

    Dual boot and shared partition with RO access for only one OS

    Dual booting OS

    I updated previous comment.

    And then of course, you have to add the dual boot script on each OS i believe when both are on the same drive.

    Control Panel\All Control Panel Items\System>>Advanced settings>>Advanced Tab>>

    Settings, change display OS to 5 seconds>>OK

    Then Environment Variables>>System Variables>>Edit

    Now enter the dual boot script and save

    But even if you can see the other OS (AKA) other partition, then because it is an OS, you might not be able to access the other OS/Partition. So you can avoid the other procedures. Unless you wanted access, then you can do as explained.
     
    RS Z28, Mar 17, 2020
    #4
Thema:

Dual boot and shared partition with RO access for only one OS

Loading...
  1. Dual boot and shared partition with RO access for only one OS - Similar Threads - Dual boot shared

  2. Tricky problem - Uniting Dual Boot into one OS

    in Windows 10 Installation and Upgrade
    Tricky problem - Uniting Dual Boot into one OS: I had Window 7 installed on an SSD (call it A). I also have an HDD. I used to install some of the softwares on C: drive (the OS drive, A) and some on the HDD drive. I bought a new, bigger, SSD (call it B) and installed Window 10 on it (fresh install). I now want to...
  3. Dual boot Phoenix OS

    in Windows 10 Customization
    Dual boot Phoenix OS: Hi ! I have a HP 15 da0002tu notebook preinstalled Windows 10 . I need to dual boot windows and phoenix os. So I installed phoenix os to my harddrive from the exe installer. It installed successfully but when I turn on my laptop it keeps boot directly to windows 10 without...
  4. Dual Boot Only Boots Into Default OS- "Choose Operating System" broken

    in Windows 10 Installation and Upgrade
    Dual Boot Only Boots Into Default OS- "Choose Operating System" broken: I have a dual boot system, and at the blue selection screen "Choose Operating System", it offers the choice between two builds of Win10. Before an update 'broke' it, I would just click on which OS I wanted, and it would boot into that OS. Now, it only allows me to boot into...
  5. Is it possible to merge the OS partition and the boot partition?

    in Windows 10 Network and Sharing
    Is it possible to merge the OS partition and the boot partition?: I have 4 partitions on my HDD and am unable to download some diagnostic software due to this. I have a 500 MB reserved, OS, boot and recovery partitions. Is it possible to merge any of these partitions to make one available in Windows 10 education version?...
  6. Dual booting OS

    in Windows 10 Network and Sharing
    Dual booting OS: Hi, I would like to install dual booting windows 10, both OS in same hard disc. I would like to confirm that no issue to have partition C and D in both OS and no access from each other? Thanks, Ratna...
  7. Dual boot but BitLocker only in one OS

    in AntiVirus, Firewalls and System Security
    Dual boot but BitLocker only in one OS: Hi, the scenario is: C: Win 10 D: Data E: Win 10 for experiments C: can see D: but cannot see E: E: cannot see C: and D: I want to apply BitLocker only for C: and D: while E: can remain without it. Is that possible? Both C: and E: has quick boot disabled....
  8. Access shared folder works for one user only

    in Windows 10 Network and Sharing
    Access shared folder works for one user only: I have 2 desktop computers, both running Windows 10. PC1 has a shared folder (shared to "Everyone"). PC2 has 2 users. Logging in as userA I can access the shared folder on PC1. But as userB I cannot. Both users have the same user groups: Administrators and HomeUsers. I...
  9. Dual OS with one EFI

    in Windows 10 Installation and Upgrade
    Dual OS with one EFI: I have two operating system running, windows 10 pro and home. I have the windows 10 pro on ssd and windows 10 home on hdd. The problem is that the EFI is on the hhd. I clonned the windows 10 home from ssd to hdd. Then installed the windows 10 pro on ssd. How can i move the...
  10. Windows 10 Dual Boot UEFI Missing or Shared Partitions on SSD2?

    in Windows 10 Installation and Upgrade
    Windows 10 Dual Boot UEFI Missing or Shared Partitions on SSD2?: Dual Boot W10 + W8.1 installs using 2 SSDs. Any thoughts on why there are less partitions on SSD install #2? SSD 1 W10 (installed first) C Drive: - Recovery - System - Reserved - Primary SSD 2 W8.1 (installed last) - Reserved - Primary Am I right in saying...