cannot mount usb harddisk

Hi guys, new problem for me. I never had this kinda of problem in my linux life !...

if i connect the usb drive , nothing is automounted. Before it works, now not (in the middle i ve compiled some kernel)

if i type

bash-4.3# lsusb
Bus 001 Device 005: ID 04e8:6124 Samsung Electronics Co., Ltd D3 Station External Hard Drive
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0c45:5101 Microdia 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

so how you can see in first position, the device is taken over

but if i type

fdisk -l

that file sistem is not recognized.

and the problem is i could not mount manually cause
there is no /dev/sdxx that refers to my hardisk

what kind of control i can do

thanx

Run the command 'lsblk' ( without the quotes ) as root, and post the results; without the USB disk plugged, and then plug it, and re-run the command.

The basics, are you sure the disk is in working order? Is there a drive light on it? On or off?

Is this the only USB drive you have plugged?

Auto mounts on Slackware go to /run/media/yourusername/ Have you looked there?

What file system is on the disk? Have you got support in the kernel for the file system on the disk?

without hd plugged

bash-4.3# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   3.7T  0 disk 
`-sdb1   8:17   0   3.7T  0 part /mnt/films
sr0     11:0    1  1024M  0 rom  
sda      8:0    0 149.1G  0 disk 
|-sda2   8:2    0     2G  0 part 
`-sda1   8:1    0    70G  0 part /

then i plug it

bash-4.3# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   3.7T  0 disk 
`-sdb1   8:17   0   3.7T  0 part /mnt/films
sr0     11:0    1  1024M  0 rom  
sda      8:0    0 149.1G  0 disk 
|-sda2   8:2    0     2G  0 part 
`-sda1   8:1    0    70G  0 part /

i dont have any /run/media/yourusername
this means that harddisk is not automounted , i know.

the file system is ntfs, but i compiled it like modules in the kernel

this is my .config

<M> MSDOS fs support 
<M> VFAT (Windows-95) fs support[*]   Enable FAT UTF-8 option by default
....
<M> NTFS filesystem support             [*]   NTFS debugging support[*]   NTFS write support

i dont know...

Do you get any new lines in your dmesg output after plugging the drive in? That could provide information on what is happening.

Have you also tried reverting to a previous kernel to see if it is some misconfiguration in your kernel?

i insert an usb pen and i notice these new rows

in /var/log/messages

Mar  6 01:49:19 MyMediaCenter kernel: [  451.896045] usb 1-2: new high-speed USB device number 3 using ehci-pci
Mar  6 01:49:19 MyMediaCenter kernel: [  452.018581] usb 1-2: New USB device found, idVendor=0951, idProduct=168a
Mar  6 01:49:19 MyMediaCenter kernel: [  452.018586] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Mar  6 01:49:19 MyMediaCenter kernel: [  452.018589] usb 1-2: Product: DT Micro
Mar  6 01:49:19 MyMediaCenter kernel: [  452.018593] usb 1-2: Manufacturer: Kingston
Mar  6 01:49:19 MyMediaCenter kernel: [  452.018595] usb 1-2: SerialNumber: 001D7D06D2A0FD4079693291
Mar  6 01:49:19 MyMediaCenter mtp-probe: checking bus 1, device 3: "/sys/devices/pci0000:00/0000:00:02.1/usb1/1-2" 
Mar  6 01:49:19 MyMediaCenter mtp-probe: bus: 1, device: 3 was not an MTP device

i tried some old kernel but nothing

i tried some old kernel but nothing

Which 'old kernel'? Stock linux kernels work with NTFS and the NTFS-3g module. What version of Slackware are you running?

I would try reverting your kernel to the stock kernel and see if it detects the device. If it does, you'll need to go through your kernel options to see what is causing your problem.