安装的时候就是一片空白

……按照坛子里的方法
我打开Gparted是正常的
终端:
ubuntu@ubuntu:~$ sudo fdisk -lu
Disk /dev/sda: 2003 MB, 2003828736 bytes
255 heads, 63 sectors/track, 243 cylinders, total 3913728 sectors
Units = sectors 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
Device Boot Start End Blocks Id System
/dev/sda4 * 63 3913664 1956801 6 FAT16
Disk /dev/sdb: 500.1 GB, 500106780160 bytes
240 heads, 63 sectors/track, 64601 cylinders, total 976771055 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000e3461
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 83900879 41950408+ 7 HPFS/NTFS/exFAT
/dev/sdb2 83900880 934839359 425469240 5 Extended
/dev/sdb3 934839360 955825919 10493280 bb Boot Wizard hidden
/dev/sdb5 83900943 209744639 62921848+ 7 HPFS/NTFS/exFAT
/dev/sdb6 209744703 838902959 314579128+ 7 HPFS/NTFS/exFAT
/dev/sdb7 838903023 934839359 47968168+ 7 HPFS/NTFS/exFAT
ubuntu@ubuntu:~$ sudo parted /dev/sdb print
Model: ATA ST3500418AS (scsi)
磁盘 /dev/sdb: 500GB
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
1 32.3kB 43.0GB 43.0GB primary ntfs 启动
2 43.0GB 479GB 436GB extended
5 43.0GB 107GB 64.4GB logical ntfs
6 107GB 430GB 322GB logical ntfs
7 430GB 479GB 49.1GB logical ntfs
3 479GB 489GB 10.7GB primary
ubuntu@ubuntu:~$
貌似也是正常的- -

找不到原因了!我真的不想放弃linux啊!~~~
大家帮忙看看谢谢!