MS onedrive screwing me

Hi, first sign in to OneDrive on the web and look for the book and notes there, including the Recycle Bin. If they are present, download normal copies immediately. The error on the removed drive usually means those files were Files On-Demand placeholders and the actual contents were stored in OneDrive, not fully on the disk. Check the file sizes; tiny placeholder files cannot be opened by Word without the OneDrive provider and account. Do not format or heavily modify the old drive. If the files are absent online and were never available offline, a data-recovery specialist may be the safest next step.