Booting requires access to the first sector of the drive.
Normally, you boot from the first hard disk drive in your system, reading the bootsector there. After reading this sector, the computer may continue loading program code from another partition.
As other partitions on this HDD don't include the boot sector, you cannot boot directly to them.
Newer BIOSes have the option to boot from a secondary drive in addition to the FDD and first HDD, intended for being able to boot from CDs. I haven't tried it, but I guess you might use that to boot from a secondary HDD instead. It is also possible that this only works on CD drives. |