If the search is unsuccessful, the firmware will return an error message.īootloaders can be stored in two different places: When a bootloader is found, it is loaded and the system start is initiated. With the latter, the bootloader and its signature is generally in the master boot record (MBR), which also contains the data carrier’s partition tables. The search always starts on the removable media (CD/DVD, USB stick, external hard drive, etc.), followed by the hard-coded drives. When this process is complete, the firmware goes through the data carriers found in sequence, checking for a bootloader by means of a special signature – the so-called boot signature (or ‘boot record’). Both applications collect the most diverse hardware data and create a complete list of all of the device’s available drives. With most desktop PCs and notebooks this will be the BIOS ( Basic Input/ Output System) or the more modern UEFI ( Unified Extensible Firmware Interface). The software responsible for this notification is the device firmware mentioned above, which is usually implemented by manufacturers in flash memory on the computer’s motherboard. When you press the start button on a computer, the very first thing you see on the screen is information about the hardware installed.
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