In admin on your product page - in these fields:
Set Track Stock to NO
Quantity 1
That is usually enough. You need to clear system cache, and perhaps Cntrl F5 your browser so you see the final results.
On occasion depending on your settings you may have - if the above didn’t result in disabling the available and qty then in Admin go to System > settings > general and turn OFF the Display Stock Quantity and No Stock Auto Disable fields.
Hi @llegrand
I just seen your reply, so it's late to say: Thank you for your reply
I tried both but unfortunately didn't work. My settings now are as below:
Product setting: Track Stock: No, Quantity: 1
Settings-System-General: Display Stock Quantity: NO, No Stock Auto Disable: NO
System cache cleared and also my browser cache.
I can around this by setting the "Minimum Quantity" to 1, but this isn't a fun way for customer.
Do you know where can I locate its script in PHP or .tbl files?
Thank you