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I have a strange problem. I have an external HDD which I use it for a linux version I use. I deleted all the partitions on it in order to create some new partitions.

I deleted all previous partitions and now I have one huge 950GB unallocated partition. My problem is that I can not create an extended or logical partition. I have used 4 different software to re-partition my drive, but I can only have 4 Primary partition. I am sure that I had 2 logical partitions before all of this on this external HDD. I have used:

1-Live Ubuntu 2-Live Gparted 3-MiniTool partition 4-EaseUS Partition Master

In all above methods I can not choose extended or logical partition because they are inactive. I know 4 primary partitions are enough for me, but I would like to know what is wrong that I can not create an extended or logical partition.

Tnx...

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this could be a HDD-firmware-specific issue, that's the only thing I can imagine. or something got corrupted. I would say: try making 4 (Each 32 mb?) primary partitions and then try to create an additional partition from inside the windows disk management. then delete the primary partitions. Good luck. Also note that when you choose to have a GUID Partition Table then you can have 128 primary partitions. –  user144773 May 5 '13 at 4:29
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2 Answers 2

You may oly 4 Primary partition. Or use software - boot loader Bootstar, it make 15 primary partition use emulation hdd partition type marker.

It you need Extended partition. If you need an Extended partition, and it will replace the one Primary partition, then the Primary partition is 3 and 1 Extended partition. Extended partition, in turn, may contain a sufficiently large number of Logical partitions.

may be help ...

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A MBR disk can only have 4 primary or 3 primary + 1 extended partitions. The extended partition is used to contain other logical ones. So all the logical partitions must be placed right next to each other. You cannot create a logical partition that is spaced from the extended volume

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