I have a Windows 98 build with an sdcard adapter for drive C. I messed up the audio drivers and wanted to roll back to a disk image I took with Disk Utility on OS X.

I had trouble getting OS X to do a bit-for-bit restore, so I repartitioned the drive in fdisk and let the Windows 98SE setup disk format it and reinstall the basics. I then used rsync with the --delete option to sync the new drive with the old image. However, when I boot the PC with the restored drive it seems like drivers are not installed, at least the graphics and audio drivers were unconfigured, and daemon tools did not appear in the taskbar. It seems like maybe the registry was reset.

I can try reinstalling the drivers, but how can I restore the PC to its exact previous state? I don't understand how there could be any difference if the files are identical. Note that I did install a different graphics card since I took the backup. Does this somehow make Windows reset its configuration? The only other change I can think of is that the C: drive volume label and size of the partition are not the same.