Re: Disk partition alignment

Gilles Espinasse wrote:
>>>> The right way to force the old aligment is parted's "-a cylinder"
>>>> option. With the option, start of the first partition can be
>>>> represented by 0% and parted will put it in sector 63.
>>>>
>>> Why not simply use the 2048 sector shift?
>> When you use "-a cylinder", parted use by default cylinder as unit.
>> There are various ways: 0%, 0 (partition will start at the first
>> cylinder, or sector 63), 63s. If you keep the beginning of the first
>> partition at sector 63, I think you should use "-a cylinder", so the
>> second partition will *also* be cylinder aligned.
>>
> To my understanding, cylinder alignment is a requirement from the past
> except on sparc where the boot partition have to start on a cylinder
> boudary.
> http://tldp.org/HOWTO/Large-Disk-HOWTO-6.html
> 
> So we should better not use cylinder as this concept was outdated long time
> ago.
> 
> Gilles

Hi Gilles,

Is this the issue that causes boot errors when the / partition is larger 
than 512 megs?
If I set this to 10240 (roughly 10 gigs), since about early march or so, 
I get a boot error after install. If the partition size is 512 megs, it 
works fine. I have been using the value ROOT_MAXIMUM 10240 in 
/src/installer/arch_defs.h for the better part of a year now.

Any info relating to this would be greatly appreciated.

Thanks
Darren

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