Hi,
I bought an external WD HD yesterday, a My Book Essential 1.5T. The HD in the box is a WDC WDC WD15EARS-00Z5B1
I was trying to follow and understand all the conversation here and there
http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/2926
But it is difficult to find a final answer. Below the result of hdparm.What matters seems to be:
Logical Sector size: 512 bytes
Physical Sector size: 4096 bytes
Logical Sector-0 offset: 0 bytes
With these results, do I need to format my disk with a special method?
For now, I formated the disk using this command:
mkfs.ext3 -T largefile4 /dev/sdb1
But the following gives me:
cat /sys/block/sdb/alignment_offset
0
I would like to be sure that I did good before the disk is filled at 80%…
Here my debian config:
linux kernel 2.6.32-8
fdisk -V
fdisk (util-linux-ng 2.16.2)
parted --version
parted (GNU parted) 1.8.8.git-dirty
hdparm -I /dev/sdb/dev/sdb:ATA device, with non-removable media Model Number: WDC WD15EARS-00Z5B1 Serial Number: WD-WMAVUxxxxxxx Firmware Revision: 80.00A80 Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6Standards: Supported: 8 7 6 5 Likely used: 8Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 2930277168 Logical Sector size: 512 bytes Physical Sector size: 4096 bytes Logical Sector-0 offset: 0 bytes device size with M = 1024*1024: 1430799 MBytes device size with M = 1000*1000: 1500301 MBytes (1500 GB) cache/buffer size = unknownCapabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, with device specific minimum R/W multiple sector transfer: Max = 16 Current = 0 Recommended acoustic management value: 128, current value: 254 DMA: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 udma5 udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns
