我的硬盘上有一个文件,
cd /media/celebisait/5AC69788C6976355
我的档案叫做myFile.tar.gz
。我做了ls -l
,
-rw------- 2 celebisait celebisait 1387745311 Jun 6 2013 myFile.tar.gz
一切似乎都很好。但是,当我这样做时
$ sudo chmod 755 myFile.tar.gz
我没有任何错误,但是什么也没发生,即当我ls -l
再次执行此操作时,得到的输出是相同的,
-rw------- 2 celebisait celebisait 1387745311 Jun 6 2013 myFile.tar.gz
Chmod不会更改。为什么?
PS:我使用Ubuntu 13.04。
编辑:
$ cd /media/celebisait/5AC69788C6976355
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 89873576 42976028 42325544 51% /
none 4 0 4 0% /sys/fs/cgroup
udev 16436736 4 16436732 1% /dev
tmpfs 3289260 920 3288340 1% /run
none 5120 0 5120 0% /run/lock
none 16446280 764 16445516 1% /run/shm
none 102400 52 102348 1% /run/user
/dev/sda1 94759 2208 92551 3% /boot/efi
/dev/sdb1 767999996 541212516 226787480 71% /media/celebisait/5AC69788C6976355
/dev/sdb2 767999996 1466472 766533524 1% /media/celebisait/54D09DBDD09DA5B0
编辑2:
$ cd /media/celebisait/5AC69788C6976355
$ mount
/dev/sda2 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /sys/firmware/efi/efivars type efivarfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
/dev/sda1 on /boot/efi type vfat (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfsd-fuse on /run/user/celebisait/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=celebisait)
/dev/sdb1 on /media/celebisait/5AC69788C6976355 type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sdb2 on /media/celebisait/54D09DBDD09DA5B0 type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
编辑3:
$ sudo fdisk -l /dev/sdb1
Disk /dev/sdb1: 786.4 GB, 786432000000 bytes
255 heads, 63 sectors/track, 95611 cylinders, total 1536000000 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 identifier: 0x6e697373
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/sdb1p1 ? 1936269394 3772285809 918008208 4f QNX4.x 3rd part
Partition 1 does not start on physical sector boundary.
/dev/sdb1p2 ? 1917848077 2462285169 272218546+ 73 Unknown
Partition 2 does not start on physical sector boundary.
/dev/sdb1p3 ? 1818575915 2362751050 272087568 2b Unknown
Partition 3 does not start on physical sector boundary.
/dev/sdb1p4 ? 2844524554 2844579527 27487 61 SpeedStor
Partition 4 does not start on physical sector boundary.
Partition table entries are not in disk order
编辑4:
$ sudo fdisk -l /dev/sdb
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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 identifier: 0x9c73d093
Device Boot Start End Blocks Id System
/dev/sdb1 2048 1536002047 768000000 7 HPFS/NTFS/exFAT
/dev/sdb2 1536002048 3072002047 768000000 7 HPFS/NTFS/exFAT
/dev/sdb3 3072002048 3907026943 417512448 7 HPFS/NTFS/exFAT
df
。
mount
?
blkid
。
df
命令的结果会很好