我刚刚安装了 Ubuntu 12.04，我是这个操作系统的新手。我的问题是，当我插入 USB 时，我无法在驱动程序旁边看到它。有人能帮忙吗？
我使用了命令sudo fdisk -l，结果是：
Disk /dev/sda: 319.9 GB, 319936615424 bytes
255 heads, 63 sectors/track, 38896 cylinders, total 624876202 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: 0xf0feae57
Device Boot Start End Blocks Id System
/dev/sda1 * 206848 124985343 62389248 7 HPFS/NTFS/exFAT
/dev/sda2 124985761 624864239 249939239+ f W95 Ext'd (LBA)
/dev/sda4 618212010 624876201 3332096 0 Empty
/dev/sda5 124985763 249971399 62492818+ 7 HPFS/NTFS/exFAT
/dev/sda6 374957163 499942799 62492818+ 7 HPFS/NTFS/exFAT
/dev/sda7 499942863 624864239 62460688+ 7 HPFS/NTFS/exFAT
/dev/sda8 249972736 318330879 34179072 83 Linux
/dev/sda9 318332928 374943743 28305408 82 Linux swap / Solaris
Partition table entries are not in disk order
Disk /dev/sdb: 4043 MB, 4043309056 bytes
125 heads, 62 sectors/track, 1018 cylinders, total 7897088 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: 0x6f20736b
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/sdb1 ? 778135908 1919645538 570754815+ 72 Unknown
/dev/sdb2 ? 168689522 2104717761 968014120 65 Novell Netware 386
/dev/sdb3 ? 1869881465 3805909656 968014096 79 Unknown
/dev/sdb4 ? 2885681152 2885736650 27749+ d Unknown
Partition table entries are not in disk order