Windows 98 bootup

I am not able to boot up past the win 98 screen. Error msg. is general failure reading drive c. I choose retry/fail I get the option to boot to safe mode. So I chose safe mode, looks like windows is booting up again then I get an error message following file is missing/corrupted c:\windows\command. There is an error in your config.sys file on line 3.I have copied a good config.sys from the boot disk to c drive. Is my hard drive toast?