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I had a problem with my note book and the comm ports not working under a DOS
window. but would work when the system was coldbooted to a DOS prompt (f8
This patch seems to have solved the problem.
I looks like Windoz 98 would not release the port in a DOS shell
>Subject: Comm Port in MS DOS
> Dear Mr. Mitchell
> Regarding our conversation with the comm port not working in dos
> mode, here are the instructions for changing the registry settings.
> WARNING: The procedure you are about to follow to fix your stated
> problem involves editing the system registry files. Using Registry
> Editor invorrectly can cause serious problems which may cause the loss
> of data, and may require you to reinstall Windows. Neither Toshiba nor
> Microsoft will guarantee that problems resulting from the incorrect
> use of Registry editor can be solved. Use Registry Editor at your own
> For information about how to edit the registry, view the Changing Keys
> And Values online Help topic in Registry Editor (Regedit.exe). Note
> that you should make a backup copy of the registry files before you
> edit the registry.
> Solution 1:
> - Open Registry Editor
> - Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\VCOMM
> - Change "EnablePowerManagement" value to 00,00,00,00.
> Solution 2:
> - Apply the attached Registry Fix file, which does exactly the same as
> solution 1.
> Good Luck
> Toshiba Technical Support.
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