I am at a loss here. I have an external 512G USB disk (Western Digital Elements 1042). My main pc runs Arch linux, while my raspberry pi 2b runs raspbian. Under Arch I have no problem mounting this disk, under raspbian there is no way I can get it recognized. The filesystem is ext4, cleanly formatted. Initially it was NTFS, didn't work (after installing ntfs-3g of course). Then formatted with gnome disk utilities to ext4, again no luck, then redid it manually with fdisk & mkfs.ext4, again no luck.. I don't know what else to try.
Even worse, upon connecting the ext HD, it appears to corrupt other USB ports, dropping my wifi connection (every time..), for which a nano USB dongle is connected to the adjacent USB port.
However, I can mount a simple USB stick without any problems.
Here is the log output on the Pi upon attaching the drive
[Sun Oct 11 12:18:23 2015] usb 1-1.4: new high-speed USB device number 6 using dwc_otg
[Sun Oct 11 12:18:23 2015] usb 1-1.4: New USB device found, idVendor=1058, idProduct=1042
[Sun Oct 11 12:18:23 2015] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[Sun Oct 11 12:18:23 2015] usb 1-1.4: Product: Elements 1042
[Sun Oct 11 12:18:23 2015] usb 1-1.4: Manufacturer: Western Digital
[Sun Oct 11 12:18:23 2015] usb 1-1.4: SerialNumber: 57584B31453332414644544B
[Sun Oct 11 12:18:23 2015] usb-storage 1-1.4:1.0: USB Mass Storage device detected
[Sun Oct 11 12:18:23 2015] scsi host0: usb-storage 1-1.4:1.0
[Sun Oct 11 12:18:24 2015] rtw_cmd_thread: DriverStopped(0) SurpriseRemoved(1) break at line 482
[Sun Oct 11 12:18:24 2015] scsi 0:0:0:0: Direct-Access WD Elements 1042 1016 PQ: 0 ANSI: 6
[Sun Oct 11 12:18:24 2015] sd 0:0:0:0: [sda] Spinning up disk...
[Sun Oct 11 12:18:24 2015] sd 0:0:0:0: Attached scsi generic sg0 type 0
[Sun Oct 11 12:18:25 2015] ....................................................................................................not responding...
[Sun Oct 11 12:20:17 2015] sd 0:0:0:0: [sda] Read Capacity(10) failed: Result: hostbyte=0x00 driverbyte=0x08
[Sun Oct 11 12:20:17 2015] sd 0:0:0:0: [sda] Sense Key : 0x2 [current]
[Sun Oct 11 12:20:17 2015] sd 0:0:0:0: [sda] ASC=0x4 ASCQ=0x1
[Sun Oct 11 12:20:19 2015] sd 0:0:0:0: [sda] Test WP failed, assume Write Enabled
[Sun Oct 11 12:20:21 2015] sd 0:0:0:0: [sda] Asking for cache data failed
[Sun Oct 11 12:20:21 2015] sd 0:0:0:0: [sda] Assuming drive cache: write through
[Sun Oct 11 12:20:21 2015] sd 0:0:0:0: [sda] Spinning up disk...
[Sun Oct 11 12:20:22 2015] ...................................................................................................not responding...
[Sun Oct 11 12:22:08 2015] sd 0:0:0:0: [sda] Read Capacity(10) failed: Result: hostbyte=0x00 driverbyte=0x08
[Sun Oct 11 12:22:08 2015] sd 0:0:0:0: [sda] Sense Key : 0x2 [current]
[Sun Oct 11 12:22:08 2015] sd 0:0:0:0: [sda] ASC=0x4 ASCQ=0x1
[Sun Oct 11 12:22:12 2015] sd 0:0:0:0: [sda] Attached SCSI disk
This is the log on Arch:
[Sun Oct 11 03:56:25 2015] usb 3-6: new high-speed USB device number 9 using xhci_hcd
[Sun Oct 11 03:56:25 2015] usb-storage 3-6:1.0: USB Mass Storage device detected
[Sun Oct 11 03:56:25 2015] scsi host10: usb-storage 3-6:1.0
[Sun Oct 11 03:56:26 2015] scsi 10:0:0:0: Direct-Access WD Elements 1042 1016 PQ: 0 ANSI: 6
[Sun Oct 11 03:56:26 2015] sd 10:0:0:0: [sdb] Spinning up disk...
[Sun Oct 11 03:56:27 2015] ..ready
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] 976769024 512-byte logical blocks: (500 GB/465 GiB)
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] Write Protect is off
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] Mode Sense: 47 00 10 08
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] No Caching mode page found
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] Assuming drive cache: write through
[Sun Oct 11 03:56:28 2015] sdb: sdb1
[Sun Oct 11 03:56:28 2015] sd 10:0:0:0: [sdb] Attached SCSI disk
[Sun Oct 11 03:56:29 2015] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
