Parece que este dispositivo está montado. Execute umount /dev/sdb1 e tente novamente.
Ao reparticionar a unidade USB no CentOS 6.x, obtenha o seguinte erro e, por gentileza, aconselhe-o a resolver isso.
Disk /dev/sdb: 31.5 GB, 31466323968 bytes
255 heads, 63 sectors/track, 3825 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: 0x0e693bd9
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 3826 30727808 c W95 FAT32 (LBA)
[root@csc ~]# fdisk /dev/sdb
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): d
Selected partition 1
Command (m for help): 1
1: unknown command
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): d
No partition is defined yet!
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-3825, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-3825, default 3825):
Using default value 3825
Command (m for help):
Command (m for help):
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 86
Changed system type of partition 1 to 86 (NTFS volume set)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
comando try: sudo resize2fs / dev / mmcblk0p2
tente o comando o em fdisk , ele criará um novo disklabel do DOS.
ou tente partprobe ou kpartx -a se você tiver este comando.
Pode ser que você tente como "sudo fdisk / dev / sdc1" isto
Solução: se você quiser criar uma partição de / dev / sdc então o comando deve ser: "sudo fdisk / dev / sdc" não como "sudo fdisk / dev / sdc1".