磁盘空间不够用？

[罗非鱼]

pt@pt-laptop:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 15739872 14454212 486124 97% /
none 501868 316 501552 1% /dev
none 508996 1232 507764 1% /dev/shm
none 508996 92 508904 1% /var/run
none 508996 0 508996 0% /var/lock
none 508996 0 508996 0% /lib/init/rw
sda1 空间不够用，于是使用命令
pt@pt-laptop:~$ sudo mount -t ext4 /dev/sda2 /home
[sudo] password for pt:
但是，这个命令使用完后，连/home这个文件夹都打不开了，请看附件
请问，如何办？

[罗非鱼]

我的磁盘明明还有许多空间可以使用的
pt@pt-laptop:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 15739872 14422520 517816 97% /
none 501868 316 501552 1% /dev
none 508996 196 508800 1% /dev/shm
none 508996 92 508904 1% /var/run
none 508996 0 508996 0% /var/lock
none 508996 0 508996 0% /lib/init/rw
/dev/sda2 20327208 176064 19118568 1% /media/73cf6189-78a2-42cf-af94-f6df58681a6e
pt@pt-laptop:~$ sudo fdisk -l
[sudo] password for pt:

Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0005e508

Device Boot Start End Blocks Id System
/dev/sda1 * 1 1991 15991683+ 83 Linux
/dev/sda2 1992 4562 20651557+ 83 Linux
/dev/sda3 4563 5926 10956330 83 Linux
/dev/sda4 5927 14593 69617677+ 5 Extended
/dev/sda5 5927 7226 10442218+ 83 Linux
/dev/sda6 7227 7491 2128581 83 Linux
/dev/sda7 7492 14593 57046783+ 83 Linux
我想把sda2拿来挂载/home，怎么做？机器一开，/dev/sda2 会自动挂载到 /media/73cf6189-78a2-42cf-af94-f6df58681a6e

[luojie-dune]

/ 都97%了！！！！

[罗非鱼]

我的其他分区有空间呀