Partition does not start on physical sector boundary?

Posted by jasmines on Ask Ubuntu See other posts from Ask Ubuntu or by jasmines
Published on 2012-06-28T05:01:48Z Indexed on 2014/06/03 21:40 UTC
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I've one HD on my laptop, with two partitions (one ext3 with Ubuntu 12.04 installed and one swap).

fdisk is giving me a Partition 1 does not start on physical sector boundary warning. What is the cause and do I need to fix it? If so, how?


This is sudo fdisk -l:

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 testine, 63 settori/tracce, 91201 cilindri, totale 1465149168 settori
Unità = settori di 1 * 512 = 512 byte
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Identificativo disco: 0x5a25087f

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63  1448577023   724288480+  83  Linux
Partition 1 does not start on physical sector boundary.
/dev/sda2      1448577024  1465147391     8285184   82  Linux swap / Solaris

This is sudo lshw related result:

 *-disk
                description: ATA Disk
                product: WDC WD7500BPKT-0
                vendor: Western Digital
                physical id: 0
                bus info: scsi@0:0.0.0
                logical name: /dev/sda
                version: 01.0
                serial: WD-WX21CC1T0847
                size: 698GiB (750GB)
                capabilities: partitioned partitioned:dos
                configuration: ansiversion=5 signature=5a25087f
              *-volume:0
                   description: EXT3 volume
                   vendor: Linux
                   physical id: 1
                   bus info: scsi@0:0.0.0,1
                   logical name: /dev/sda1
                   logical name: /
                   version: 1.0
                   serial: cc5c562a-bc59-4a37-b589-805b27b2cbd7
                   size: 690GiB
                   capacity: 690GiB
                   capabilities: primary bootable journaled extended_attributes large_files recover ext3 ext2 initialized
                   configuration: created=2010-02-27 09:18:28 filesystem=ext3 modified=2012-06-23 18:33:59 mount.fstype=ext3 mount.options=rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered mounted=2012-06-28 00:20:47 state=mounted
              *-volume:1
                   description: Linux swap volume
                   physical id: 2
                   bus info: scsi@0:0.0.0,2
                   logical name: /dev/sda2
                   version: 1
                   serial: 16a7fee0-be9e-4e34-9dc3-28f4eeb61bf6
                   size: 8091MiB
                   capacity: 8091MiB
                   capabilities: primary nofs swap initialized
                   configuration: filesystem=swap pagesize=4096

These are related /etc/fstab lines:

UUID=cc5c562a-bc59-4a37-b589-805b27b2cbd7 /               ext3    errors=remount-ro,user_xattr 0       1
UUID=16a7fee0-be9e-4e34-9dc3-28f4eeb61bf6 none            swap    sw              0       0

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