HI
Env hw :Toshiba external drive 2Tb usb 3.0
PC1 hw :ASROCK P4VM8 firmware 1.30 (latest available)
PC1 sw :debian 9.9
PC2 hw :hp 650 notoebook
PC2 sw :win 7
PC2 sw :gparted live

I can corrrectly operate the Toshiba on hp 650 ...both with win7 and with gparted live i run backup pgms error free

PC1 can't detect the drive....
i suspect bios limit to 137Gb disk size ...
if this is the problem ..then how to bypass ?
or there is another problem ?
thanks in advance for the support
Maurizio

If it is exfat, Debian may not have the drivers to read it, (proprietary file system).

Hi Mac
Thanks for the answer...
no,the the filesystem is NTFS
Maurizio

you might need to install the ntfs driver for debian.

Hi
forgive me ,english is not my mother tongue and i miss you some informations
i have an usb stick formatted NTFS and i'm able to mount ,and read/write to the pen to PC1
when i mount the 2Tb Usb 3.0 drive to PC1 i hear a series of repeated clicks inside the drive....
(may be heads actuators ?)
after some second i disconnect the cable to avoid drive damage
the drive give no problems on PC2 ..win7 e gparted live recognize the drive as soon as it is plugged in

How are you mounting it? Show your command line.
Example:
Then after you mount it what does
df
mount
lsblk show?

Are you sure that the usb port is good? Sounds like the way a usb port does when it's getting a little worn. And ntfs drives are picky anyway.

Run dmesg -w then plug the drive in and see if it becomes ready or if it keeps scrolling.

The 137 GB limit was for a BIOS / IDE drives that existed back in 2001. Should not be a factor with USB however, I suspect it could be a hardware problem.

I assume this is a mechanical drive? If the drive is powered by the USB port it is possible PC1 can not provide the necessary current to spin up the disk. If it was a pure USB driver issue I would not expect to hear clicking but there should be a bunch of errors as seen by the output of the dmesg command. You might be able to use the drive on PC1 with a suitable external power supply or a powered USB hub.

Hi Michael
i have the sensation you are on the right path....
i cannot see the disk with "fdisk -l" may be because it does not enter in a ready state
it is a mechanical drive ...
PC1 is very old ...it is a desktop i assembled many years ago with spare parts....
Machine has s two front usb ports connected to motherboard with a cable ,and rear ports directly soldered to motherboard..
i will try with rear ports ...the disk drive has not a power connector,it is just powered by usb

Hi Michael
you are great technician !!
the drive connected to rear usb ports works...
you put me always in the right path...
My compliments
Maurizio