How to jump start a car with dead battery / Macam mana jump start ?

Recently had to jumpstart a car with dead battery. The maintenance free (MF) type batteries are notorious to just suddenly die without warning.

Here are my steps

1. Positive to Positive (+)
2. Negative to Negative (-)
3. Start Donor Car
4. Leave running 5 minutes
5. Start recipient car 
6. Leave running 5 minutes
7. Stop Donor Car engine
8. Remove Negative Leads (-)
9. Remove Positive Leads (+)
10. Car with dead battery should go to a shop to check out its battery as soon as possible.

Most instructions you can find online will tell you to connect negative to Ground (-).
Do you know why?