Re: I'd like to fix read failure issue on Mac OS X

2014/12/20 23:58、Dan Lukes <dan <at> obluda.cz> wrote: 

> For example because your's disc have 4k physical sector. Write of 512B logical sector mean that:
> 1. physical sector is read into drive's buffer
> 2. 512B of buffer is rewritten by supplied data
> 3. physical sector is written into medium

$ smartctl -i /dev/sda
smartctl 6.4 2014-10-07 r4002 [i686-linux-3.16.0-1-grml-586] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Hitachi Travelstar 5K500.B
Device Model:     Hitachi HTS545050B9A300
Serial Number:    091227PBG406Q7K6SKNV
LU WWN Device Id: 5 000cca 597ed5937
Firmware Version: PB4OC64G
User Capacity:    500,107,862,016 bytes [500 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    5400 rpm
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 6
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Sat Dec 20 18:05:54 2014 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

$ fdisk -lu
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 7CC20A1E-BC90-49FF-90E9-7384F28833E8

Device      Start       End   Sectors   Size Type
/dev/sdb1      40    409639    409600   200M EFI System
/dev/sdb2  409640 976510983 976101344 465.5G Apple HFS/HFS+

So, my drive does not seems to have 4k physical sector...   Am I right?


Here's status log upto now: 
1.hdparm --read-sector for existing sector is successful.
2.hdparm --security-set-pass fails with input/output error when putting hdd into Macintosh SATA bus.
3.hdparm --security-set-pass succeeds when putting hdd into USB bridge enclosure, but fails to hdparm --security-erase with "The running kernel lacks CONFIG_IDE_TASK_IOCTL support for this device."

So I'm wondering again the LBA 976783240 which reported by smartctl -l selftest /dev/sda is really exists or not...


// Miya

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