i have a 4tb sdd with everything i ever had or saved from every computer i’ve ever had. i am right now paying for a cloud service to keep it backed up, just in case, because there’s lots of stuff on there i would be very sad to lose

but i’m sorting, adding, deleting, renaming, etc on the drive and the backup service isn’t flexible enough to keep up. i don’t need it exactly backed up all the time but i’d like to be able to back up the changes more often. also i can’t really afford the cloud service anymore anyway

i have a 4tb external hard drive that could keep it backed up safely as long as my house doesn’t burn down in a forest fire. my question is, is there a way to make it easy to keep a external drive the same as my internal ssd when i want without copying all the files using copy paste? i’d like it to prioritize the changes on the ssd so if i delete a file on the ssd it will get rid of it on the backup (the cloud service doesn’t do that, it only adds to the data on the cloud.)

i’m sure it’s pretty easy but i don’t know how. i’m using windows 10 right now. if i NEED to use linux i sometimes boot mint on a usb, but i’d rather get it working on windows 10 because i’ll be using windows 10 until they stop supporting it (not enough free computer time rn to make the switch)