MS-DOS versions earlier than 3.1 are not compatible with Windows 95. This error can also occur when starting Setup from MS-DOS if you are using the 386MAX software utility. If this error occurs, temporarily disable the 386MAX commands from the startup files, and then run Setup again. When running Windows 95 Setup from MS-DOS you might receive this error, indicating there might be a conflict in the upper memory region. Or run Setup from Windows 3.x.
Setup requests a new source path.
If that doesn't work, shut down and restart the computer. Setup is unable to find a valid boot partition. A valid MS-DOS partition must exist in order for Setup to install Windows 95. If Windows 95 Setup is unable to find a valid boot partition during installation, it displays an error message. If you receive an error message, there might be an actual partition error, but it is more likely that disk compression software or network components are mapping over the boot drive.