I screwed up when I made my home server, just curious if there's a way out of the corner I've backed myself in

I work away from home for weeks at a time, and I hurriedly set up my server on my last day at home last month

I got a free PC, and a 10tb HDD. Lenovo uses a stupid special cable to run sata drives off the motherboard, I didn’t know there were two sizes, bought the wrong size and said fuck it so I installed windows on the same drive and same partition I now have 4 tb worth of media

Now I want to move to Linux as my server OS, I got another PC that actually has the ability to run multiple HDDs

Can I access the files on this drive from another OS? Is there a way to keep these files without transferring it all to another HDD?