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Re: USB hard drive - external///

Subject: Re: USB hard drive - external///
From: Unruh <unruh-spam@xxxxxxxxxxxxxx>
Date: Sat, 26 Jul 2008 06:05:57 GMT
Newsgroups: uk.comp.os.linux

zed <zed@xxxxxxxxxx> writes:

>Will Kemp <will@xxxxxxxxxxxxxxxx> wrote:

>> zed wrote:

>>snip>

>> > The reinstall was successful but for some reason the computer will not
>> > read the USB HD. It did before without me having to do anything
>> > especially "Linuxie".   I have unplugged and plugged in the drive both
>> > at the drive and the computer connections, without success.  The hard
>> > drive light is on.
>> > 
>> > I have searched Google for "mounting external usb drive" but without
>> > success.
>> > 
>> > If I go into a terminal and type lsusb i get
>> > 
>> > zed@zed-desktop ~ $ lsusb Bus 002 Device 004: ID 058f:6387 Alcor Micro
>> > Corp. Transcend JetFlash 110 USB 2.0 Flash Drive (2GB) Bus 002 Device
>> > 003: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter Bus 002 Device
>> > 002: ID 03f0:2f17 Hewlett-Packard Bus 002 Device 001: ID 0000:0000 Bus
>> > 001 Device 001: ID 0000:0000 zed@zed-desktop ~ $
>> > 
>> > if that is any use. All I can recognise is the usb flash drive and HP
>> > printer.  I presume that the USB 2.0 IDE Adapter is what allows the
>> > other USB devices to register.  The external hard drive doesn't appear.
>> > 
>> > So, your mission, should you choose to accept it, is to tell this
>> > floundering geriatric what other avenues are open to him to solve this
>> > problem.
>> 
>> Install a "proper" distribution?! ;-)

>It is :-)

> 
>> Plug in the hard drive, give it a few seconds, then do 'dmesg' - that
>> should scroll loads of log stuff up your screen, but it's the last few
>> lines you're interested in. It should register that a USB device has been
>> plugged in. It should also say something about the nature of that device.
>> Ideally, it should say it's attaching it to a scsi port.
>> 
>Did as you suggest and got:

>[   78.185029] usb 2-5: new high speed USB device using ehci_hcd and address
>4
>[   78.319346] usb 2-5: configuration #1 chosen from 1 choice
>[   78.327074] scsi7 : SCSI emulation for USB Mass Storage devices
>[   78.333100] usb-storage: device found at 4
>[   78.333105] usb-storage: waiting for device to settle before scanning
>[   83.332290] usb-storage: device scan complete
>[   83.335039] scsi 7:0:0:0: Direct-Access     HTS54104 0G9AT00         
>0811 PQ: 0 ANSI: 0
>[   83.342519] sd 7:0:0:0: [sdd] 78140160 512-byte hardware sectors (40008
>MB)
>[   83.345515] sd 7:0:0:0: [sdd] Test WP failed, assume Write Enabled
>[   83.345518] sd 7:0:0:0: [sdd] Assuming drive cache: write through
>[   83.349528] sd 7:0:0:0: [sdd] 78140160 512-byte hardware sectors (40008
>MB)
>[   83.352514] sd 7:0:0:0: [sdd] Test WP failed, assume Write Enabled
>[   83.352517] sd 7:0:0:0: [sdd] Assuming drive cache: write through
>[   83.352522]  sdd:
>[   83.702543] sd 7:0:0:0: [sdd] Attached SCSI disk
>[   83.702583] sd 7:0:0:0: Attached scsi generic sg5 type 0
>zed@zed-desktop ~ $  

>and then doing a lsusb I get

>Bus 002 Device 004: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter
>Bus 002 Device 003: ID 058f:6387 Alcor Micro Corp. Transcend JetFlash 110
>USB 2.0 Flash Drive (2GB)

What is taht flash drive? Why is it permanatly plugged in? Try removing it

Then look for a scsi disk
ls /dev/sd*

It looks like it is /dev/sdd.
See if there are any partitions /dev/sdd1, sdd5,...
Mount one of them (as root) somewhere
mount /dev/sdd1 /mnt/hd
or whatever you have there. 



>Bus 002 Device 002: ID 03f0:2f17 Hewlett-Packard 
>Bus 002 Device 001: ID 0000:0000  
>Bus 001 Device 001: ID 0000:0000  

>Sorry to be a pest but "what now"?

>-- 
>zed

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