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- #MAC WINDOWS DIFFERENT SIZE FOR DIFFERENT WINDOWS INSTALL#
- #MAC WINDOWS DIFFERENT SIZE FOR DIFFERENT WINDOWS SERIAL#
#MAC WINDOWS DIFFERENT SIZE FOR DIFFERENT WINDOWS SERIAL#
This disk sector also contains all of the information concerning the hard drive (i.e., manufacturer, serial number, number of bytes per sector, number of sectors per cluster, number of sectors, etc.).
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It contains the main partition table and the code, called the bootloader, which when loaded into memory, will allow the system to boot up.Īfter it is loaded into memory, this program will determine from which system partition to boot, and will start the program (called the bootstrap), which will start up the operating system present on that partition. What is “master boot record”? The boot sector (called the Master Boot Record or MBR) is the first sector of a hard drive (cylinder 0, head 0, sector 1). Here is an example of where the disk contains one primary partition and one extended partition made up of three logical drives:įor DOS systems (DOS, Windows 9x), only the primary partition is bootable and is, therefore, the only one on which the operating system can be started. "simulate" several smaller-sized hard drives). In the extended partition, the user can create logical drives (i.e. A disk may contain up to four primary partitions (only one of which can be active), or three primary partitions and one extended partition. There are three types of partitions: primary partitions, extended partitions and logical drives. That is unless you want to create several partitions so as to have several drives on which data is kept separately. If you are using just one operating system, a single partition of the full size of the disk is sufficient. Therefore, logically there will be at least as many partitions as there are operating systems using different file systems.
#MAC WINDOWS DIFFERENT SIZE FOR DIFFERENT WINDOWS INSTALL#
It can be used for example, to install different operating systems that do not use the same file system. It involves creating areas on the disk where data will not be mixed. The partitioning of a hard drive occurs after the drive has been physically formatted but before it is logically formatted.