Old Windows on HDD Not Showing in Boot Menu After Installing Windows on SSD

[Windows 10]

Hello,Till yesterday I was using Windows 10 installed on my HDD, and it was working fine. Than , I added an SSD (in the M.2 slot) to my laptop and installed a fresh copy of Windows 10 on it using a bootable USB drive. During the installation, I chose the Custom Installation option and selected the SSD (Drive 1) as the installation location. I did not modify or remove anything on the HDD.Currently, the new Windows installed on the SSD works perfectly, and I can access the files on the HDD (Drive D, E, and F) from File Manager, except for the Users folder from the old Windows installation on the

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