[syslinux] ISOLINUX: COMBOOT INT22 Additions?

[G. Murali Krishnan]

Additional functions which could be added to those
already supported by INT22 under ISOLINUX.

Check if partition is bootable
------------------------------

Input: Drive Number and Partition Number
Output: Returns whether the given partition has boot able code.

Drive number = 0,1... for floppy drives, 0x80,0x81,... HDD
Partition number makes sense only for HDDs.
Partition number = 0 will check if MBR has boot code (?)
                 > 0 will check if that partition number has boot code.

Boot into Partition
-------------------
Input: Drive number, partition number
Output: boots into given drive/partition and does not return if boot code
        exists or returns with an error if no boot code....

- Murali


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