我有一个 1.5TB 的 WD 外置 USB 硬盘和两个 Ubuntu 系统，两者均为“精确的'.当我将磁盘插入系统A它没有出现在输出中sudo fdisk -l它也不会自动安装（请注意，情况并非总是如此 - 过去它曾经出现过）。当我将它插入系统B（再次Ubuntu 精确）当我执行sudo fdisk -l（输出附加在末尾）。
这两个系统之间的差异说明了什么？我应该运行什么样的诊断程序/使用什么样的工具来解决问题？
更新：当我将设备插入 USB 端口时系统A当我有尾部-f / var / log / syslog跑步：
系统 A 上的 tail -f /var/log/syslog 输出
Sep 16 01:15:09 thorin kernel: [ 9883.556173] usb 2-2: new high-speed USB device number 7 using ehci_hcd
Sep 16 01:15:09 thorin mtp-probe: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2"
Sep 16 01:15:09 thorin mtp-probe: bus: 2, device: 7 was not an MTP device
系统 B 上的 sudo fdisk -l 的输出
$ sudo fdisk -l
Disk /dev/sda: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 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: 0x00070db4
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2905114623 1452556288 83 Linux
/dev/sda2 2905116670 2930276351 12579841 5 Extended
/dev/sda5 2905116672 2930276351 12579840 82 Linux swap / Solaris
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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: 0x9c849c84
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 488375999 244187968+ 7 HPFS/NTFS/exFAT
Disk /dev/sdg: 1500.3 GB, 1500299395072 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930272256 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: 0x0003e17f
Device Boot Start End Blocks Id System
/dev/sdg1 2048 2930272255 1465135104 7 HPFS/NTFS/exFAT