help: extended partition.

[neo1986]

I am working on a program that will read MBR and EBRs to display hdd partition structure. I wanna know that can we have more than one extended partitions(each having one or more logical partitions) ? And also is it neccessary that extended partition will be last one such that there will be no primary partition after that

[pepe]

Hi,

there can be up to four extended partitions in the MBR, but any extended partition may contain other extended partitions.
Extended partitions can be placed into any slot of the MBR (and extended partition tables as well), they don't have to be the last one.

pepe

[prodata]

if locate 4 extended partition in MBR then there is no any bootable partition because we can not boot from extended partition. AS MBR can just allocate 4 partition. So will be wise make first partition as primary and the last 3 partition as extended.