我刚买了一个树莓派。它带有一个8GB的SD卡（实际上是SD适配器+ microSD卡），上面带有RPi徽标。
它本来应该有8Gb，但是“ parted”命令说的却有所不同...
$ sudo parted
GNU Parted 2.3
Using /dev/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) help
align-check TYPE N check partition N for TYPE(min|opt) alignment
check NUMBER do a simple check on the file system
cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER copy file system to another partition
help [COMMAND] print general help, or help on COMMAND
mklabel,mktable LABEL-TYPE create a new disklabel (partition table)
mkfs NUMBER FS-TYPE make a FS-TYPE file system on partition NUMBER
mkpart PART-TYPE [FS-TYPE] START END make a partition
mkpartfs PART-TYPE FS-TYPE START END make a partition with a file system
move NUMBER START END move partition NUMBER
name NUMBER NAME name partition NUMBER as NAME
print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found partitions, or a particular partition
quit exit program
rescue START END rescue a lost partition near START and END
resize NUMBER START END resize partition NUMBER and its file system
rm NUMBER delete partition NUMBER
select DEVICE choose the device to edit
set NUMBER FLAG STATE change the FLAG on partition NUMBER
toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER
unit UNIT set the default unit to UNIT
version display the version number and copyright information of GNU Parted
(parted) print
Model: SD USD (sd/mmc)
Disk /dev/mmcblk0: 8069MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 4194kB 62.9MB 58.7MB primary fat16 lba
2 62.9MB 3277MB 3214MB primary ext4
而且我用光了空间...
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 2.9G 2.7G 50M 99% /
devtmpfs 428M 0 428M 0% /dev
tmpfs 87M 228K 87M 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 173M 0 173M 0% /run/shm
/dev/mmcblk0p1 56M 20M 37M 36% /boot
其他4.5 Gb还剩哪里呢？
谢谢