Re: fdisk and 2048 sectors obsession.

[dE <de.techno@gmail.com>]

On 10/28/14 00:37, Felix Miata wrote:
> dE composed on 2014-10-28 00:13 (UTC+0530):
>
>> I was learning about GPT when I noticed this behavior of fdisk which I
>> never though about before.
>> Regardless of the partition table, fdisk always starts the first
>> partition at 2048. In reality, the maximum size required by the gap
>> between MBR and the 1st partition is a single sector, which's used by
>> GRUB 1.5. GPT doesn't need this space at all.
>> Then extended partitions too have a gap of 2048 sectors.
>> Why this behavior?
> http://www.seagate.com/tech-insights/advanced-format-4k-sector-hard-drives-master-ti/
> may provide some insight WRT performance issues ensuing from other start
> sector selections.

But that works even with multiples of 8. So we can start from sector 8 
in MBR and 40 in GPT.

Also I'm pretty sure fdisk uses 2048 even with -b 4096, but 
unfortunately I get --

*** Error in `fdisk': malloc(): memory corruption: 0x0000000002507330 ***

  with that switch.