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From: kernel <kernel@crazytrain.com>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Konstantin Kudin <konstantin_kudin@yahoo.com>,
	Horst von Brand <vonbrand@inf.utfsm.cl>,
	lkml@dervishd.net, linux-kernel@vger.kernel.org
Subject: Re: fdisk: What do plus signs after "Blocks" mean?
Date: Thu, 14 Jul 2005 09:50:02 -0400	[thread overview]
Message-ID: <1121349002.3718.11.camel@crazytrain> (raw)
In-Reply-To: <Pine.LNX.4.61.0507131222300.14635@yvahk01.tjqt.qr>

I always thought;

First 446 bytes are boot code and all
Next 64 bytes are for 4 partition records, 16 bytes each
Last 2 bytes are signature 

?

-fd


On Wed, 2005-07-13 at 06:24, Jan Engelhardt wrote:
> > Guys, thanks a lot for the explanations!
> >
> > Actually, it seems like one can backup information on ALL partitions
> >by using the command "sfdisk -dx /dev/hdX". Supposedly, it reads not
> >only primary but also extended partitions. "sfdisk -x /dev/hdX" should
> >be then able to write whatever is known back to the disk.
> 
> MBR size is 448 bytes, the rest is "the partition table", with space for four 
> entries. If one wants more, then s/he creates a [primary] partition, tagging 
> it "extended", and the "extended partiton table" is within that primary 
> partition. So yes, by dd'ing /dev/hdX, you get everything. Including "lost 
> sectors" if you dd it back to a bigger HD.
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 


  reply	other threads:[~2005-07-14 13:51 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-12 16:35 fdisk: What do plus signs after "Blocks" mean? Konstantin Kudin
2005-07-12 17:37 ` DervishD
2005-07-12 20:19   ` Horst von Brand
2005-07-12 20:48     ` Konstantin Kudin
2005-07-13 10:24       ` Jan Engelhardt
2005-07-14 13:50         ` kernel [this message]
2005-07-14 16:23           ` DervishD
2005-07-14 18:08           ` Jan Engelhardt
2005-07-13 12:14       ` DervishD
2005-07-13 12:13     ` DervishD
     [not found] <mailman.1123702259.29404.linux-kernel2news@redhat.com>
2005-08-10 23:00 ` Problem with usb-storage and /dev/sd? Pete Zaitcev
2005-08-11  7:29   ` DervishD
2005-08-11 22:53     ` Horst von Brand

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