Adding external HDD to Raspberry Pi

[E.S. Rosenberg]

Are you providing the external HDD with sufficient electricity? The
Raspberry is most likely not capable of providing enough current...

2014-12-14 19:30 GMT+02:00 Gabor Szabo <gabor at szabgab.com>:
>
> So finally I install the Raspberry Pi I bought a few weeks ago and wanted
> to add an external HDD.
> I plugged in the external hard drive and /var/log/syslog printed the
> following:
>
>
> Dec 14 17:02:55 pi kernel: [  759.981949] usb 1-1.3: new high-speed USB
> device number 8 using dwc_otg
>
> Dec 14 17:02:55 pi kernel: [  760.163364] usb 1-1.3: New USB device found,
> idVendor=1058, idProduct=0820
>
> Dec 14 17:02:55 pi kernel: [  760.163398] usb 1-1.3: New USB device
> strings: Mfr=1, Product=2, SerialNumber=5
>
> Dec 14 17:02:55 pi kernel: [  760.163414] usb 1-1.3: Product: My Passport
> 0820
>
> Dec 14 17:02:55 pi kernel: [  760.163429] usb 1-1.3: Manufacturer: Western
> Digital
>
> Dec 14 17:02:55 pi kernel: [  760.163444] usb 1-1.3: SerialNumber:
> 57583431413432454363833
>
> Dec 14 17:02:55 pi kernel: [  760.169522] usb-storage 1-1.3:1.0: USB Mass
> Storage device detected
>
> Dec 14 17:02:55 pi kernel: [  760.181935] scsi0 : usb-storage 1-1.3:1.0
>
> Dec 14 17:02:56 pi kernel: [  761.183065] scsi 0:0:0:0: Direct-Access
> WD       My Passport 0820 1012 PQ: 0 ANSI: 6
>
> Dec 14 17:02:56 pi kernel: [  761.187365] scsi 0:0:0:1: Enclosure
> WD       SES Device       1012 PQ: 0 ANSI: 6
>
> Dec 14 17:02:56 pi kernel: [  761.189473] sd 0:0:0:0: [sda] Spinning up
> disk...
>
> Dec 14 17:02:56 pi kernel: [  761.277106] sd 0:0:0:0: Attached scsi
> generic sg0 type 0
>
> Dec 14 17:02:56 pi kernel: [  761.278094] scsi 0:0:0:1: Attached scsi
> generic sg1 type 13
>
>
> But then when I try to run
>
>
> $ sudo fdisk /dev/sda
>
> I get
>
> fdisk: unable to open /dev/sda: No such device or address
>
> $ ls -l /dev/sda
>
> brw-rw---T 1 root floppy 8, 0 Dec 14 17:21 /dev/sda
>
> $ sudo fdisk -l
>
> only lists the sdcard
>
>
> The external disk is brand new and it has NTFS on it. I have not handled
> disk in linux for a long time, but a I recall I am supposed to use fdisk to
> partition it and then use mkfs.ext4 to format.
>
>
> So what am I missing here?
>
>
> Gabor
>
>
>
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