<div dir="ltr">Get a powered USB hub (i.e. a usb hub which also connects to a wall power socket). I'm not familiar with RPi USB version but check for USB 3.0 vs. 2.0.<div class="gmail_extra"><br><div class="gmail_quote">On 15 December 2014 at 06:07, Gabor Szabo <span dir="ltr"><<a href="mailto:gabor@szabgab.com" target="_blank">gabor@szabgab.com</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hmm, good question. The Raspberry does see the device when it is connected, so is it possible that it needs more<div>power after later on?</div><div><br></div><div>How can I check?</div><div><br></div><div>If the problem is lack of current, how can I solve that? Can I put one of these usb hubs that also provide power between the two?</div><span><font color="#888888"><div><br></div><div>Gabor</div></font></span><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Dec 14, 2014 at 8:43 PM, E.S. Rosenberg <span dir="ltr"><<a href="mailto:esr+linux-il@g.jct.ac.il" target="_blank">esr+linux-il@g.jct.ac.il</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Are you providing the external HDD with sufficient electricity? The Raspberry is most likely not capable of providing enough current...<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>2014-12-14 19:30 GMT+02:00 Gabor Szabo <span dir="ltr"><<a href="mailto:gabor@szabgab.com" target="_blank">gabor@szabgab.com</a>></span>:</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">So finally I install the Raspberry Pi I bought a few weeks ago and wanted to add an external HDD.<br>I plugged in the external hard drive and /var/log/syslog printed the following:<br><br><br>Dec 14 17:02:55 pi kernel: [ 759.981949] usb 1-1.3: new high-speed USB device number 8 using dwc_otg<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:163364" value="+61163364" target="_blank">163364</a>] usb 1-1.3: New USB device found, idVendor=1058, idProduct=0820<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:163398" value="+61163398" target="_blank">163398</a>] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=5<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:163414" value="+61163414" target="_blank">163414</a>] usb 1-1.3: Product: My Passport 0820<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:163429" value="+61163429" target="_blank">163429</a>] usb 1-1.3: Manufacturer: Western Digital<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:163444" value="+61163444" target="_blank">163444</a>] usb 1-1.3: SerialNumber: 57583431413432454363833<br><br>Dec 14 17:02:55 pi kernel: [ 760.<a href="tel:169522" value="+61169522" target="_blank">169522</a>] usb-storage 1-1.3:1.0: USB Mass Storage device detected<br><br>Dec 14 17:02:55 pi kernel: [ 760.181935] scsi0 : usb-storage 1-1.3:1.0<br><br>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<br><br>Dec 14 17:02:56 pi kernel: [ 761.187365] scsi 0:0:0:1: Enclosure WD SES Device 1012 PQ: 0 ANSI: 6<br><br>Dec 14 17:02:56 pi kernel: [ 761.189473] sd 0:0:0:0: [sda] Spinning up disk...<br><br>Dec 14 17:02:56 pi kernel: [ 761.277106] sd 0:0:0:0: Attached scsi generic sg0 type 0<br><br>Dec 14 17:02:56 pi kernel: [ 761.278094] scsi 0:0:0:1: Attached scsi generic sg1 type 13<br><br><br>But then when I try to run<br><br><br>$ sudo fdisk /dev/sda<br><br>I get<br><br>fdisk: unable to open /dev/sda: No such device or address<br><br>$ ls -l /dev/sda<br><br>brw-rw---T 1 root floppy 8, 0 Dec 14 17:21 /dev/sda<br><br>$ sudo fdisk -l<br><br>only lists the sdcard<br><br><br>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.<br><br><br>So what am I missing here?<span><font color="#888888"><br><br><br>Gabor<br><br><br></font></span></div>
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