What's meaning of extra partitions on partion table?

[BRM]

> From: Abdullah Teke <ateke.groups at gmail.com>

>To: Kubuntu user technical support <kubuntu-users at lists.ubuntu.com> 
>Sent: Friday, February 1, 2013 2:18 AM
>Subject: Re: What's meaning of extra partitions on partion table?
>
>On Wed, Jan 30, 2013 at 5:03 PM, BRM <bm_witness at yahoo.com> wrote:
>
>> From: Abdullah Teke <ateke.groups at gmail.com>
>>
>>>To: Kubuntu user technical support <kubuntu-users at lists.ubuntu.com>
>>>Sent: Wednesday, January 30, 2013 9:32 AM
>>>Subject: What's meaning of extra partitions on partion table?
>>
>>>
>>>
>>>Hi;
>>>I have kubuntu 12.10 installed on disk had three partition as you see below. Nowadays  i realized that there are two extra partitions on table. Is there anybody who have opinions for reason of this? Thank you.
>>>
>>>
>>>
>>>
>>>       Name                      Flags                    Part Type             FS Type                             [Label]                        Size (MB)
>>> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>                                                            Pri/Log              Free Space                                                              1.05              *
>>>        sda1                      Boot                      Primary              ext4                                                                20971.52              *
>>>        sda2                                                Primary              swap                                                                 4294.97              *
>>>        sda3                                                Primary              ext4                                                               474840.31              *
>>>                                                            Pri/Log              Free Space                                                              0.03              *
>>>
>>
>>
>>They're not really extra partitions. It's free space left behind by aligning the partitions to certain boundaries - space you can't use.
>>It seems your first partition had to be offset by 1.05 MB from the beginning of the disk, and the last partition ends 0.03 MB before the end of the disk.
>>
>>Ben
>>
>
>Hi,
>Thank
 you for response. But while i was installing i set up 3 partition for /
 , /home and swap. After i used for a while i used to swapoff and swapon
 commands and then saw the extra partitions. May swapoff and swapon 
commands cause the situation?
>Thanks.
>

No. It would have been done when the partitions were created. My guess is the limited partition program that is part of the installer application didn't show the details. I know for certain that if you use fdisk, sfdisk, or cfdisk directly that they will do exactly that - which is why I was aware of it.
Perhaps someone more familiar with the installer could confirm my suspicision?

Ben