Hi,
you will need to get in touch with Yamaha. They should have rescue disks to re-install the operating system. Unfortunately, these are not available for distribution to the general public. The update CD (or the update download) only contains changes to the operating system, not the complete package, so you can't use it to re-install the operating system if your hard drive has crashed. This also shows why it is a good idea to regularly back up your hard drive, esp. if you do a lot of recording.
athomik
On Feb 22 2009, Brian wrote:
>Hey folks,
>
>I have a Mark IV and installed the 3.0 upgrade last summer when I
>received it and am now wanting to play with controlling the piano via
>my PC. I am missing the DNA folder when I look at the folder list
>from my computer.
>
>Is there a way to force a re-install of the upgrade? I tried putting
>the CD and floppy in and following the instructions just like it was a
>new upgrade. It quickly went through the process in just a few
>minutes but I still don't have the DNA folder.
>
>Any ideas?
>
>Thanks!
> Brian
>
>
>
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