Primary master and secondary master
Hard Drive configuration is used to define the Slave and master Hard Drive. When we are attaching more than one hard drive the configuration is used. Configuration is done by jumper setting which is available in back side of hard drive...1st two pins for master hard drive and last pins are slave..
At the worst both drives will get selected at the same time and trash each other's data.
If you had installed anything in the PCI-E or any kind of Drive, it will lose all of the hardware configuration to that device. Overall, no performance enhancement will be made. In rare cases, Performance will increase by 1%-3%.
You do the proper research and stop trying to get people to do your homework for you.
Primary master and secondary master
Most of hard drive have jumper settings. While jumper configuration is not required for SATA, it's necessary for EIDE, SCSI etc. Jumpers can be found next to to the power and data ports on the hard drive. Most manufactures will print next to each 2 contacts the configuration supported (Slace, Master etc). Please refer to "Sources and related links" below to find more information.
Hard disk jumpers are short conductors that you can use to bypass circuits in a hard drive, or break into the hard drive. They are most commonly used to configure the motherboard when you are not able to boot up the computer.
The second drive.....
first Hard drive is Master and additional will be set to slave.
Boot setting configuration refers to the settings that control the process of starting up a computer. This includes options such as the sequence in which devices are checked for an operating system, the boot order of drives, and the choice of booting from a CD, USB, or hard drive. These settings are typically accessed through the computer's BIOS or UEFI interface.
The hard drive controllers are SATA, IDE, and EIDE. The hard drive configuration tells the computer what drive controller to use and how to store the information and where to store the information.
We generally use the jumpers to set the disk drives as master or slave.