查看U盘设备,sdb,sdb1就位于U盘上:
yq@bear:~$ ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 /dev/sda6 /dev/sda7 /dev/sda8
/dev/sdb /dev/sdb1
yq@bear:~$
yq@bear:~$ sudo fdisk /dev/sdb
[sudo] password for yq:
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 15130079 7565008+ b W95 FAT32
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 15130079 7565008+ b W95 FAT32
Command (m for help): d
Selected partition 1
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
Using default value 1
First sector (2048-15131635, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-15131635, default 15131635): 13034483
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 2048 13034483 6516218 83 Linux
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): e
Partition number (1-4, default 2):
Using default value 2
First sector (13034484-15131635, default 13034484):
Using default value 13034484
Last sector, +sectors or +size{K,M,G} (13034484-15131635, default 15131635):
Using default value 15131635
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 2048 13034483 6516218 83 Linux
/dev/sdb2 13034484 15131635 1048576 5 Extended
Command (m for help): n
Partition type:
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p): l
Adding logical partition 5
First sector (13036532-15131635, default 13036532):
Using default value 13036532
Last sector, +sectors or +size{K,M,G} (13036532-15131635, default 15131635):
Using default value 15131635
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 2048 13034483 6516218 83 Linux
/dev/sdb2 13034484 15131635 1048576 5 Extended
/dev/sdb5 13036532 15131635 1047552 83 Linux
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): t
Partition number (1-5): 5
Hex code (type L to list codes): 82
Changed system type of partition 5 to 82 (Linux swap / Solaris)
Command (m for help): p
Disk /dev/sdb: 7747 MB, 7747397632 bytes
32 heads, 63 sectors/track, 7505 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 2048 13034483 6516218 83 Linux
/dev/sdb2 13034484 15131635 1048576 5 Extended
/dev/sdb5 13036532 15131635 1047552 82 Linux swap / Solaris
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
查看结果:
yq@bear:~$ sudo fdisk -l
// sda 硬盘部分省略
Disk /dev/sdb: 7747 MB, 7747397632 bytes
239 heads, 62 sectors/track, 1021 cylinders, total 15131636 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: 0x0007b467
Device Boot Start End Blocks Id System
/dev/sdb1 2048 13034483 6516218 83 Linux
/dev/sdb2 13034484 15131635 1048576 5 Extended
/dev/sdb5 13036532 15131635 1047552 82 Linux swap / Solaris
yq@bear:~$
格式化:
umount /dev/sdb1 并重新插拔一下U盘,
sudo mkfs.ext4 /dev/sdb1
sudo mkswap /dev/sdb5
下面就可以用UnetBootin在U盘上安装操作系统了,当然,也可以不用fdisk分区,在安装的时候图形化分区. 这里就是记录一下fdisk的使用方法而已.
