There is no requirement that one or the other is the Master or Slave, as long as one of them is (if they are on the same cable.)
IF the CD drive shares an IDE channel with a hard drive, make the hard drive the master and the CD drive the slave.
For performance reasons, a Hard Drive and CD-ROM drive should be on separate IDE channels. This is because both drives on one channel will share bandwidth, making them run at only half the speed if both drives are active at once (i.e. installing a program from CD-ROM). Both drives should be configured as "Master" drives (according to the jumper cables), since they will both be the master for their respective channel.
the hard drive should be set to master...
becase they should
Hard drives now are pretty robust. You should try not to move the laptop when it is on but it really should not hurt the hard drive.
When connecting to IDE drives (whether they be hard disk drives or optical drives) on the same cable, the computer needs to be able to tell them apart. When using a 40 wire IDE cable, you have to identify one drive as Master and the other as Slave. You do this by positioning the jumpers on the end of the drive according to the diagram on the drive itself. When using an 80 wire cable, set the jumpers on both drives to the 'cable select' position and their Master and Slave classifications will be determined by their position on the cable.
Some IDE drives have a master/slave jumper, but a significant number of IDE drives defaulted to a "cable select" setting where the drive would determine for itself whether it was the master or the slave by which of the two sockets on the cable it was plugged into.
Yes. They hide in the boot sector program of a hard drive or floppy disk or in the master boot program in the Master Boot Record.
Both drives are using the same interface (IDE, SCSI, not SATA I or II because you can only connect one device to a SATA cable). If you have installed Operating system it's better to set the hard drive to Master, and the CD drive to slave. In that way your system will not ask the CD drive to boot up everytime when you start your computer. CD drive should be set to Master only when you are reinstalling/installing OS or you have repair it.
If it's not already there after the hard drive replacement, then it should be on the backup you made, if you made a backup, if not, swap hard drives, run the backup wizard, reswap hard drives, restore from backup
No. It hides in the boot sector program of a hard drive or floppy disk or in the master boot program in the Master Boot Record (MBR). Don Gus
As the "primary master".