olemus
kettasektsioon, milles on alglaadur või Windowsi puhul opsüsteemi kaust

= a primary disk partition that contains the boot loader
or that holds the Windows system folder

ülevaateid
https://en.wikipedia.org/wiki/System_partition_and_boot_partition
https://en.wikipedia.org/wiki/BIOS_boot_partition
https://www.easyuefi.com/wintousb/faq/en-US/What-are-system-partitions-and-boot-partitions.html
https://www.cyberciti.biz/faq/linux-check-boot-path-command/
https://docs.hytrust.com/DataControl/4.3/Online/Content/Books/Admin-Guide/Linux-Root-Swap-Drive-Encryption/Creating-Boot-Partition-Ubuntu.html

vt ka
- buutsektor