i have recently started using ubuntu and i dont know where to find the files from my earlier installed windows in ubuntu i had huge datas in previous partitons in D and E drive
If they are on a partition? Sometimes you have to specifically mount it before you can access the files.
If that's the case, go to disks, select the partition you have your data on and then hit the little play button to mount it. from there you should be able to access things on the partition from the normal file system.