From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Clausen Subject: 4k sector size and WD20EARS Date: Thu, 08 Apr 2010 16:20:16 +0200 Message-ID: <4BBDE620.3040601@gc-web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from server3.gc-web.de ([188.40.57.209]:56974 "EHLO mail.gc-web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757413Ab0DHO3F (ORCPT ); Thu, 8 Apr 2010 10:29:05 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.gc-web.de (Postfix) with ESMTP id 831B926D27A1 for ; Thu, 8 Apr 2010 16:20:17 +0200 (CEST) Received: from mail.gc-web.de ([127.0.0.1]) by localhost (server3.gc-web.de [127.0.0.1]) (amavisd-new, port 10024) with LMTP id BsRjoOHIhRXK for ; Thu, 8 Apr 2010 16:20:17 +0200 (CEST) Received: from [192.168.0.162] (p3E9D4050.dip.t-dialin.net [62.157.64.80]) by mail.gc-web.de (Postfix) with ESMTPSA id 5155226D2798 for ; Thu, 8 Apr 2010 16:20:17 +0200 (CEST) Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hi, i just bought some WD20EARS harddisk. They are supposed to have 4k physical sector size, right? My system seems to think they are not: alex@hal:/sys/block/sdb/queue$ cat logical_block_size physical_block_size 512 512 alex@hal:/sys/block/sdb/queue$ alex@hal:~$ uname -a Linux hal 2.6.33.2 #1 SMP PREEMPT Sun Apr 4 20:52:14 CEST 2010 x86_64 GNU/Linux alex@hal:~$ from dmesg: scsi 1:0:0:0: Direct-Access ATA WDC WD20EARS-00S 80.0 PQ: 0 ANSI: 5 sd 1:0:0:0: [sdb] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB) so, who is right? The current partition table looks like: alex@hal:~$ sudo cfdisk -P s /dev/sdb Partition Table for /dev/sdb First Last # Type Sector Sector Offset Length Filesystem Type (ID) Flag -- ------- ----------- ----------- ------ ----------- -------------------- ---- 1 Primary 0 3907024064 63 3907024065 Linux (83) None alex@hal:~$ is that okay for 4k sector size? Alexander