我是 Ubuntu 新手（以前用的是 Windows），我不知道安装是否正确：我知道安装后默认应该有 2 个分区，所以我运行这个命令
sudo fdisk -l
输出结果如下：
Disk /dev/sdb: 159.9 GB, 159905567744 bytes
255 heads, 63 sectors/track, 19440 cylinders, total 312315562 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: 0x000b9862
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 499711 248832 83 Linux
/dev/sdb2 501758 312313855 155906049 5 Extended
/dev/sdb5 501760 312313855 155906048 83 Linux
Disk /dev/mapper/sda5_crypt: 159.6 GB, 159645696000 bytes
255 heads, 63 sectors/track, 19409 cylinders, total 311808000 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: 0x00000000
Disk /dev/mapper/sda5_crypt doesn't contain a valid partition table
Disk /dev/mapper/ubuntu--vg-root: 157.4 GB, 157449977856 bytes
255 heads, 63 sectors/track, 19142 cylinders, total 307519488 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: 0x00000000
Disk /dev/mapper/ubuntu--vg-root doesn't contain a valid partition table
Disk /dev/mapper/ubuntu--vg-swap_1: 2143 MB, 2143289344 bytes
255 heads, 63 sectors/track, 260 cylinders, total 4186112 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: 0x00000000
Disk /dev/mapper/ubuntu--vg-swap_1 doesn't contain a valid partition table
Disk /dev/sda: 8032 MB, 8032092160 bytes
255 heads, 63 sectors/track, 976 cylinders, total 15687680 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: 0xefb71902
Device Boot Start End Blocks Id System
/dev/sda1 * 63 15687679 7843808+ c W95 FAT32 (LBA)
有人能通过查看此输出告诉我是否出了问题吗？我想知道是否至少有 2 个分区，或者我必须重新安装 Ubuntu。
答案1
您有两个硬盘似乎都有有效的分区。
因为：
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 499711 248832 83 Linux
/dev/sdb2 501758 312313855 155906049 5 Extended
/dev/sdb5 501760 312313855 155906048 83 Linux
您的 HDD ( /dev/sdb: 159.9 GB) 只有 2 个分区：/dev/sdb1和/dev/sdb2。/dev/sdb2是一个扩展分区，它仅细分为一个逻辑分区：/dev/sdb5。
因为：
Device Boot Start End Blocks Id System
/dev/sda1 * 63 15687679 7843808+ c W95 FAT32 (LBA)
您有一个带有一个分区的磁盘（很可能是闪存驱动器- /dev/sda: 8032 MB）/dev/sda1：。
为了更好地理解你的驱动器是如何分区的，请安装并使用分区。