1.系统提示磁盘空间不足，删除系统内核结果把当前系统内核删掉了。现在系统没法进去。
2.重新做了一个16.04系统u盘启动盘，能进入u盘的试用Ubuntu桌面，请教一下怎样修复系统。

假设本地磁盘中的 Ubuntu 16.04 根分区位于 /dev/sda1
进入试用桌面，连接互联网

重新启动计算机

我试了试，不行啊，另外我的主分区是哪个？不太确定啊

file:///home/ubuntu/%E5%9B%BE%E7%89%87/2016-09-15%2005-00-26%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE.png
file:///home/ubuntu/%E5%9B%BE%E7%89%87/2016-09-15%2005-01-44%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE.png

root@ubuntu:/home/ubuntu# mount /dev/sda1/mnt
mount: can't find /dev/sda1/mnt in /etc/fstab

图片发不了，所以复制过来了

进入试用桌面执行以下指令将结果全部复制贴上来，不要截图
搞清之前切勿盲目操作



您少打一空格，命令实为



贴图方法：完整编辑界面下方 “Choose File” - 添加文件 - 等待上传页面消失 - 置入文中



建议优先选择复制文字发帖，以利阅读。另可节省论坛资源

ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/loop0: 1.3 GiB, 1433468928 bytes, 2799744 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 /dev/sda: 698.7 GiB, 750156374016 bytes, 1465149168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x51873b7b

设备 启动 Start 末尾 扇区 Size Id 类型
/dev/sda1 * 2048 58593279 58591232 28G 83 Linux
/dev/sda2 58595326 1465142016 1406546691 670.7G f W95 扩展 (LBA)
/dev/sda5 662761638 931223789 268462152 128G 7 HPFS/NTFS/exFAT
/dev/sda6 931223853 1199686004 268462152 128G 7 HPFS/NTFS/exFAT
/dev/sda7 1199686068 1465142016 265455949 126.6G 7 HPFS/NTFS/exFAT
/dev/sda8 58595328 662761471 604166144 288.1G 82 Linux 交换 / Solaris

Partition 2 does not start on physical sector boundary.
Partition 5 does not start on physical sector boundary.
Partition 6 does not start on physical sector boundary.
Partition 7 does not start on physical sector boundary.
Partition table entries are not in disk order.




Disk /dev/sdb: 7.2 GiB, 7751073792 bytes, 15138816 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
Disklabel type: dos
Disk identifier: 0xcad4ebea

设备 启动 Start 末尾 扇区 Size Id 类型
/dev/sdb4 * 256 15138815 15138560 7.2G b W95 FAT32

ubuntu@ubuntu:~$ sudo parted -l
Model: ATA Hitachi HTS54757 (scsi)
磁盘 /dev/sda: 750GB
Sector size (logical/physical): 512B/4096B
分区表：msdos
Disk Flags:

数字 开始： End 大小 类型 文件系统 标志
1 1049kB 30.0GB 30.0GB primary ext4 启动
2 30.0GB 750GB 720GB extended lba
8 30.0GB 339GB 309GB logical linux-swap(v1)
5 339GB 477GB 137GB logical ntfs
6 477GB 614GB 137GB logical ntfs
7 614GB 750GB 136GB logical ntfs


Model: Kingston DataTraveler 3.0 (scsi)
磁盘 /dev/sdb: 7751MB
Sector size (logical/physical): 512B/512B
分区表：msdos
Disk Flags:

数字 开始： End 大小 类型 文件系统 标志
4 131kB 7751MB 7751MB primary fat32 启动

猜测 本地磁盘 /dev/sda 中 Ubuntu 占据 /dev/sda1

分区顺序：
sda1 - Ubuntu 16.04 根分区，28G
sda2 - 扩展分区，670.7G
\- sda8 - swap，288.1G
\- sda5 - HPFS/NTFS/exFAT，128G
\- sda6 - HPFS/NTFS/exFAT，128G
\- sda7 - HPFS/NTFS/exFAT，126.6G

难道是因为空格吗，我真是醉了！谢谢大神，我已进系统！之前试过不行，我还以为是分区错了！总算不用重装了！另外我的分区好像不太合理，可以扩容ubuntu分区吗？或者分区需要调整的？系统使用中总是提示磁盘空间不足。同祝中秋佳节节日快乐，阖家团圆！

把下面指令 複製 貼進終端機 執行
sudo cat /etc/fstab
把結果全部直接 選取/複製/貼上來

如果能夠把 提示磁盘空间不足 的訊息文字 全部複製貼上來 可以縮短尋找分割區時間