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> If I Install Windows 10 On An Ssd Disk, But Before Installing It I Disconnect The Hdd Disk Where I Have Windows 7 Installed, And Then I Reconnect It, Will I Have Dual Boot?
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If I install Windows 10 on an SSD disk, but before installing it I disconnect the HDD disk where I have Windows 7 installed, and then I reconnect it, will I have dual boot?
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The non-slave disk is the one that will boot the machine. That's what I know.
In order to dual boot, you need to have the first operating system visible to the installer, so that the Windows boot application can write the registry to start Windows 7.
To dual boot you need a boot loader. Usually that's software, either your own that installs your operating system when it detects another installation, or a third-party one that you install as the first item to boot and configure yourself, or you can use the shortcut offered by some firmware (UEFI/BIOS) to change the drive to boot. This third alternative is quite easy to use in your case, but it may not be the most convenient one.
Not really, but it's easy to access the BIOS when booting the PC and choose the preferred boot disk for each occasion.