linux-kernel - Re: ATA 4 KiB sector issues.

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Message-ID: <f875e2fe1003141556p1f6595e0m8ce2a17c1843c326@mail.gmail.com>
Date:	Sun, 14 Mar 2010 18:56:20 -0400
From:	s ponnusa <foosaa@...il.com>
To:	Michal Soltys <soltys@....info>
Cc:	Tejun Heo <tj@...nel.org>, Mikael Abrahamsson <swmike@....pp.se>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Daniel Taylor <Daniel.Taylor@....com>,
	Jeff Garzik <jeff@...zik.org>, Mark Lord <kernel@...savvy.com>,
	tytso@....edu, "H. Peter Anvin" <hpa@...or.com>,
	hirofumi@...l.parknet.co.jp,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, irtiger@...il.com,
	Matthew Wilcox <matthew@....cx>, aschnell@...e.de,
	knikanth@...e.de, jdelvare@...e.de
Subject: Re: ATA 4 KiB sector issues.

Has been following this thread and I might possibly be testing with
Windows XP soon. Will update the results.
-
SP

On Sun, Mar 14, 2010 at 5:09 PM, Michal Soltys <soltys@....info> wrote:
> Tejun Heo wrote:
>>
>> I was thinking about testing XP booting this weekend but really want
>> to avoid it, so thanks a lot for the info.  I'll update the doc
>> accordingly but can you please enlighten me on how it works and what's
>> broken in detail?  So, XP should be fine with any alignment?
>>
>> Thanks.
>>
>
> Sorry for late reply.
>
> s/sp2/sp3 - although it shouldn't make a difference from sp2 onwards.
>
> Anyway - the tests I did were because of weird laptop, where I shrinked
> whole win7 stuff and having no primary partitions left to use, I tested my
> usual windows xp installation I deploy with ntfsclone. Originally that XP
> were installed from installation disk merged with sp3 (or how it's usually
> called in windows world - slipstreamed). Of course, windows xp itself will
> not present any options to install itself into logical partition in the
> usual way - but during later deployment it's not a problem to put it where
> one's want.
>
> It's possible that this wouldn't work, if windows were installed first from
> pre-sp2 media, and then service pack was installed (in such case, ntldr in
> C:\ is not updated afaik). It's also possible, that "brute-force" copied
> pre-sp2 or win2k to a partition made with either - a) xp sp2+'s disk manager
> or b) mkfs.ntfs and with updated most recent ntldr -  would boot as well
> (the partition requirement is due to potential differences between the code
> in bootsector, or more precisely - $Boot - first 8KiB of ntfs partition).
>
> Obvious requirements besides the above (ntldr, perhaps $Boot as well) are:
>
> - mentioned "hidden sectors" (must be manually adjusted, recent syslinux's
> chain.c32 has option to do it automatically)
> - adjusted boot.ini (to point to new partition, eventually other windowish
> stuff as necessary)
>
> As you can see, there're many "if"s and combinations here that I didn't
> test.
>
> On a related note - ironically, while I had 0 problems making it work
> through syslinux (both regular chaining and through direct ntldr loading) -
> I couldn't make win7's bootmgr (bcd, bcdedit ....) do it properly. Oh well.
>
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