I have two SSDs and want to try Linux without sharing files between the Linux and Windows installations. Windows is currently installed on one drive, while the second 256GB SSD is blank and came from an old laptop. Ideally, each operating system should remain on its own drive, and I would like to choose which one starts without accidentally modifying the Windows installation. What is the safest way to install Linux and configure the boot options?
4 Answers
Installing Linux to its own SSD is usually straightforward, but double-check the disk model and capacity in the installer before confirming anything. Installing the bootloader on the Linux drive is preferable because Windows remains independently bootable. Also consider disabling Windows Fast Startup if you plan to access the Windows partition from Linux; otherwise it may be locked or mounted read-only.
If protecting your existing Windows setup is your top priority, disconnect the Windows SSD while installing Linux. That guarantees the installer cannot place files on or reformat the wrong drive. Once Linux is installed, reconnect the Windows drive and choose between them using the UEFI/BIOS boot menu. This is very separate and safe, but you may need to select the drive manually rather than using one combined boot menu.
You cannot make a drive completely inaccessible to the other operating system unless you disconnect it or use a removable drive bay. Linux can usually read Windows partitions, while Windows generally cannot read common Linux filesystems without extra software. You can still keep the installations separate by avoiding shared partitions and not mounting the Windows drive from Linux.
During the Linux installation, carefully select the blank SSD as the installation target and install the bootloader to that same Linux drive. Afterward, set the Linux drive as the first boot device in your UEFI/BIOS settings. Most installers will detect Windows and add it to the Linux boot menu, letting you choose an operating system at startup. If you ever want Windows to boot directly, you can select the Windows drive in the firmware boot menu instead.
The second SSD is blank, so I can use that for Linux. Is physically disconnecting the Windows drive necessary, or can I simply verify the drive selection and change the boot order during installation?