An attempt to mount a USB disk drive device fails on Red Hat
After plugging in the USB drive run fdisk -l as follows.
Part of the output from this output is shown below.
Disk /dev/sdd: 499.4 GB, 499405291520 bytes 255 heads, 63 sectors/track, 60715 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 60716 487699456 7 HPFS/NTFS Disk /dev/dm-11: 499.4 GB, 499405291520 bytes 255 heads, 63 sectors/track, 60715 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/dm-11 1 60716 487699456 7 HPFS/NTFS
The device ID for the USB drive is /dev/sdd1
However when trying to mount /dev/sdd1 onto /mnt
mount /dev/sdd1 /mnt
the following error occurs.
mount: /dev/sdd1 already mounted or /mnt busy
As can be seen from the output of fdisk -l above the device mapper subsystem is interfering with this device and preventing us from manually mounting it.
However check the contents of /etc/fstab for a line similar to the following.
/dev/sdd1 /media/My_Passport ntfs pamconsole,exec,noauto,managed 0 0
If this line exists for the USB device (in this case /dev/sdd1) then use the following command to mount /dev/sdd1 on /media/My_Passport.
However unless additional packages are installed linux will only be able to read from this USB device and not write to it.
This is because the USB device contains an NTFS filesystem and therefore RedHat mounts it read only. Attempting to mount the device read write does not solve the problem.
The installation of packages fuse and ntfs-3g should solve the problem.