can't clone 520 bytes sector harddisk on ubuntu 16.04

tony2015 · 05-27-2018, 06:55 AM

I have a SAS 300GB connect to LSI sas1064e, os is ubuntu 16.04, I can sg_format to 512bytes sector and work as normal, I can dd if=/dev/sdg of=disk1.img to copy image.

but if I sg_format it to 520bytes sector,
fdisk -l doesn't show this drive as /dev/sd(x),
use smartctl -a /dev/sg7, can show the disk full info

copy image dd show error 0 byte copy

I can't mount the disk. error not a block device

so how do I clone 520bytes per sector sas drive to disk1.img or another 520bytes/512bytes drive?

thanks for any help

pan64 · 05-27-2018, 08:44 AM

I would probably try sg_format with -vvv and check if there was any related message.

tony2015 · 05-27-2018, 10:04 AM

sg_format is working fine

how do I clone 520bytes per sector sas drive to disk1.img or another 520bytes/512bytes drive?

Quote:

Originally Posted by pan64

I would probably try sg_format with -vvv and check if there was any related message.

AwesomeMachine · 05-29-2018, 11:05 AM

512 and 520 bytes per sector are not compatible to each other. 520B/sector drives are used in proprietary storage systems. Unless you have a storage system that uses such formatting, you wouldn't need nor want 520B/sector formatting, for reasons you have already discovered: drive controller firmware usually only works with 512B/sector format drives.

jefro · 05-30-2018, 02:10 PM

"fdisk -l doesn't show this drive as /dev/sd(x),"

Then I'd suspect you have not properly formatted this disk or your controller can't read it correctly or the drive doesn't fully support advance format.

I assume you did full power down to view this drive in adapter tools too.