Safe Mode lets Windows start with only essential drivers and services, allowing you to troubleshoot crashes, faulty drivers, ...
This would be an NT-line request, not Win9x. NT has hooks for other file systems, but no one is making any freeware drivers for those other FSes (except ext2). So, would any one be interested in ...
Use Disk Cleanup or Storage Sense to delete temp files and schedule auto cleans. Use BleachBit for deeper scans, granular app cleaning, and secure shredding of free space. Remove old drivers via ...