Linux 主機 安裝新的硬碟
Advanced Format 硬碟
fdisk 時出現
Partition does not start on physical sector boundary
再次執行 fdisk 時：
# fdisk /dev/sdb
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xa401b794
Device Boot Start End Blocks Id System
/dev/sdb1 1 130542 1048576000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdb2 130542 243202 904937560 83 Linux
Partition 2 does not end on cylinder boundary.
Command (m for help): u
Changing display/entry units to sectors
Command (m for help): c
DOS Compatibility flag is not set
Command (m for help): p
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xa401b794
Device Boot Start End Blocks Id System
/dev/sdb1 2048 2097154047 1048576000 83 Linux
/dev/sdb2 2097154048 3907029167 904937560 83 Linux
參考：
http://www.ubuntu-tw.org/modules/newbb/viewtopic.php?viewmode=compact&topic_id=36016&forum=3
http://askubuntu.com/questions/156994/partition-does-not-start-on-physical-sector-boundary
http://pigsign.lodou.net/posts/175732-disk-block-cluster-chunk-partition-alignment
http://www.serveradminblog.com/2014/05/partition-x-does-not-start-on-physical-sector-boundary/
