ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = 扇区 of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x837b0700

设备 启动 起点 终点 块数 Id 系统
/dev/sda1 * 2048 209737727 104867840 7 HPFS/NTFS/exFAT
/dev/sda2 209737728 475977727 133120000 7 HPFS/NTFS/exFAT
/dev/sda3 475977728 742217727 133120000 7 HPFS/NTFS/exFAT
/dev/sda4 742217728 976764927 117273600 f W95 扩展 (LBA)
/dev/sda5 742219776 915324927 86552576 7 HPFS/NTFS/exFAT
/dev/sda6 915326976 976764927 30718976 b W95 FAT32

Disk /dev/sdb: 32.0 GB, 32017047552 bytes
255 heads, 63 sectors/track, 3892 cylinders, total 62533296 sectors
Units = 扇区 of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x837b071b

设备 启动 起点 终点 块数 Id 系统

Disk /dev/sdc: 15.7 GB, 15693664256 bytes
255 heads, 63 sectors/track, 1907 cylinders, total 30651688 sectors
Units = 扇区 of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xcad4ebea

设备 启动 起点 终点 块数 Id 系统
/dev/sdc4 * 256 30651687 15325716 c W95 FAT32 (LBA)



ubuntu@ubuntu:~$ sudo parted -l print
Model: ATA Hitachi HTS54505 (scsi)
磁盘 /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
分区表：msdos

数字 开始： End 大小 类型 文件系统 标志
1 1049kB 107GB 107GB primary ntfs 启动
2 107GB 244GB 136GB primary ntfs
3 244GB 380GB 136GB primary ntfs
4 380GB 500GB 120GB extended lba
5 380GB 469GB 88.6GB logical ntfs
6 469GB 500GB 31.5GB logical fat32


Model: ATA SAMSUNG SSD PM83 (scsi)
磁盘 /dev/sdb: 32.0GB
Sector size (logical/physical): 512B/512B
分区表：msdos

数字 开始： End 大小 类型 文件系统 标志


Model: SanDisk Extreme (scsi)
磁盘 /dev/sdc: 15.7GB
Sector size (logical/physical): 512B/512B
分区表：msdos

数字 开始： End 大小 类型 文件系统 标志
4 131kB 15.7GB 15.7GB primary fat32 启动, lba


ubuntu@ubuntu:~$ sudo gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.8

Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory.
***************************************************************

Disk /dev/sda: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3B1F8226-DE4F-45FA-B1B5-58F09FB9583C
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 2048-sector boundaries
Total free space is 14317 sectors (7.0 MiB)

Number Start (sector) End (sector) Size Code Name
1 2048 209737727 100.0 GiB 0700 Microsoft basic data
2 209737728 475977727 127.0 GiB 0700 Microsoft basic data
3 475977728 742217727 127.0 GiB 0700 Microsoft basic data
5 742219776 915324927 82.5 GiB 0700 Microsoft basic data
6 915326976 976764927 29.3 GiB 0700 Microsoft basic data

补充说明：
1、是想装双系统 WIN7+ubuntu
2、U盘安装。
sudo dd if=/dev/zero of=/dev/sda bs=1 count=8 seek=512 无效
sudo umount -l /isodevice 无效
修改成BIOS中的IDE模式 无效
3、硬盘安装
注意了hd0(0,n)无效