Originally Posted by
kuroi
Go to Admin > Catalog > Manufacturers and hover over the information icon ("i" in a circle) for the manufacturer whose products you want to disable. In the bottom left hand corner of your browser a link should appear that ends mID=<number>. That number is the manufacturers ID in your database.
Now BACKUP YOUR DATABASE.
Then go to Admin > Tools > Install SQL Patches, type the following into the big boxwhere <number> is the manufacturers ID and click on the send button.
This should turn all those products from that manufacturer off. To turn them back on again repeat but enter
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