Re: 64 bit kernel won't mount /

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On Sun, 25 Jan 2015 16:18:27 -0500
Phillip Susi <psusi@xxxxxxxxxx> wrote:

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> On 01/22/2015 10:34 AM, One Thousand Gnomes wrote:
> > Unlikely. Apart from fdisk the setup is basically invisible. The
> > drive reports a block size and an offset. The firmware offset is
> > chosen so that the chassic DOS alignments in fdisk happen to just
> > fall nicely on 4K boundaries for partition starts.
> > 
> > There is nothing special the OS does to deal with ATA/SATA 4K
> > sectors.
> 
> Incorrect: the kernel bogus/synthetic "geometry" is the maximum
> allowed of 63 sectors per track, and the old dos default alignment for
> the first partition on the disk places its start at sector 63, which
> is not 4k aligned.  The special thing that partitioning tools 

I guess if you count partitioning tools as the "OS" this is true, but by
the OS I meant "system call layer and below".

Alan
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