USB Hub & Ext Hard Drives

Do you need a USB Hub with an A/C power connection to use the Hub for an external hard drive? Drive is used mostly to retain photos. Or can I use a Hub with 480 Mpbs without A/C?

Also, you don't really want to use a hub if it's avoidable. It's rather a last option, due to hardware and driver issues that plauge those things. Not saying yours won't work perfectly, but there is a chance it won't - or will be at a reduced speed.
If your machine has an eSATA port, you want to use that with an eSATA compatiable exteral hard drive. That will give you the best speed.
I am a Bestbuy employee who volunteers on these boards on my own time. I am not paid for posting here, and you should understand that my opinions are exactly that - opinions. I do not represent Bestbuy in any way.
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Similar Messages

Can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

stephan ach wrote:
but i read that there are lots of problems with the new macbook pro. i have all my data on ext. la cie hard drive. i wont have a problem reading them?
What problems specifically? If you have a problem you should start your own thread and explain the problem in detail.
External USB devices including hard drives and DVD work fine on the new Macbook Pros.

I am considering purchasing a new Mac desktop. I have, at present, a Liteon 851S ext CD/DVD write and a Maxtor 3200 USB ext hard drive. Will these work with a Mac desktop? My local Apple store could not answer my question.Happy New year to all.

I am considering purchasing a new Mac desktop. I have, at present, a Liteon 851S ext CD/DVD write and a Maxtor 3200 USB ext hard drive. Will these work with a Mac desktop? My local Apple store could not answer my question.Happy New year to all.

Yes the Mac can read that drive but you would need to Copy the data off of it to the Mac as apposed to Move, which implies Deleting them from the drive as they were transferred from the external to the Mac. Since the Mac can Not Write to NTFS drives it can't Delete anything as that is really a Write operation, IE Making changes to the NTFS formatted drive.
Once you have that Data on Both your New Mac and you Older Windows PC you can format that drive to work on both system.
If you want to and plan on doing that post back and I'll explane how, it is simple but should be done on a Windows PC.
If you only plan on using it on the Mac from now on that is fairly simple also and is done on the Mac, Once you have the files from it stored on the Mac.
Yes you could burn those photos to DVD but that is just a waste of DVDs, you don't need to.

I have 3 older ext. hard drives that I've utilized many times. Today while searching for old files, one of the three is no longer recognized by my PowerMac. Any suggestions?

I have 3 older ext. hard drives that I've utilized many times. Today while searching for old files, one of the three is no longer recognized by my PowerMac. The drive is not listed in Disk Utility. Any suggestions?

Is the computer in you equipment line:
Dual Core Intel Xenon
(which is not a PowerMac but a Mac Pro) the one you are asking about, or do you have an older PowerMac?
If a Mac Pro, their forums are here:
Mac Pro
and, as Mac Pros have a totally different architecture from the pre-2005 Macs this forum covers, you may not have the same issues that can affect the older models. If someone didn't notice your equipment line, you could get advice that doesn't apply.
If you really have a pre-2005 PowerMac, read on.
If the stubborn external is USB and does not have its own power brick (i.e., it gets power only from the computer's UBS ports--"bus powered"), it may not be getting enough power. As electric motors age, they can demand more power than when new, and the power available on any USB port is limited.
The typical workabouts to making a computer recognize an aging, bus-powered USB drive are:
Get a powered USB hub (has its own power brick
Get a "Y" USB cable: 1 Meter USB 2.0 A to 5 Pin Mini B Cable - Auxiliary USB "Y" Power Design for external hard drives.
The second gets power from two USB ports on the computer and often that's enough.
Remember that the USB ports on your keyboard seldom provide enough power even for a thumb drive, so be sure to use the USB ports on the back of the computer.

Is it possible to connect an external USB 2.0 hard drive to a Thunderbolt Display?

Hello,
Is it possible to connect an external USB 2.0 hard drive to a Thunderbolt Display and back up a MacBook Air to the external hard drive using Time Machine?
I intend to connect my MacBook Air to the Thunderbolt Display using a Thunderbolt cable.
I would also like to connect my printer via USB 2.0 to the Thunderbolt Display. Will this also work?
Effectively using the Thunderbolt Display as a USB hub or docking station.
Regards,
Ben

Ok, thanks.
My 1 cable to ThunderBolt Display objective
MacBook Air -> (via 1 x Thunderbolt cable) -> Thunderbolt Display -> (via 1 x USB cable) -> USB 2.0 external hard drive
I would like to know if this configuration is possible and Time Machine will run correctly.
Your 2 cable suggestion (I think)
MacBook Air -> (via 1 x Thunderbolt cable + 1 x USB cable) -> Thunderbolt Display + USB 2.0 external hard drive
This configuration requires 2 cables to disconnect/reconnect from my MacBook Air.

External USB 2.0 hard drive reconnects on its own after power-down

I have an external USB 2.0 hard drive which I'm trying to power off (after unmounting all partitions, of course) using:
$ udisksctl power-off --block-device /dev/sdb
When I do this, the drive spins back up after a few seconds. Only when I issue the same command again does the drive stay powered off.
I'm running:
linux 3.13.7-1
udisks2 2.1.3-1
This is what I see in the journal log when I:
- Plug in the drive's USB cable
- Issue the power-off command
- After the drive spins up again, issue the command again
Mar 29 19:51:01 miki-desktop kernel: usb 1-5: new high-speed USB device number 10 using ehci-pci
Mar 29 19:51:01 miki-desktop kernel: usb-storage 1-5:1.0: USB Mass Storage device detected
Mar 29 19:51:01 miki-desktop kernel: usb-storage 1-5:1.0: Quirks match for vid 1058 pid 0704: 8000
Mar 29 19:51:01 miki-desktop kernel: scsi12 : usb-storage 1-5:1.0
Mar 29 19:51:01 miki-desktop mtp-probe[21301]: checking bus 1, device 10: "/sys/devices/pci0000:00/0000:00:04.1/usb1/1-5"
Mar 29 19:51:01 miki-desktop mtp-probe[21301]: bus: 1, device: 10 was not an MTP device
Mar 29 19:51:02 miki-desktop kernel: scsi 12:0:0:0: Direct-Access WD 5000BMV External 1.75 PQ: 0 ANSI: 4
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Write Protect is off
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Mode Sense: 23 00 00 00
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sdb: sdb1 sdb2
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Attached SCSI disk
Mar 29 19:51:47 miki-desktop udisksd[21107]: Powering off /dev/sdb - successfully sent SCSI command START STOP UNIT
Mar 29 19:51:47 miki-desktop udisksd[21107]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:04.1/usb1/1-5/remove
Mar 29 19:51:47 miki-desktop kernel: usb 1-5: USB disconnect, device number 10
Mar 29 19:51:47 miki-desktop kernel: usb 2-5: new full-speed USB device number 9 using ohci-pci
Mar 29 19:51:48 miki-desktop kernel: usb 2-5: not running at top speed; connect to a high speed hub
Mar 29 19:51:48 miki-desktop kernel: usb-storage 2-5:1.0: USB Mass Storage device detected
Mar 29 19:51:48 miki-desktop kernel: usb-storage 2-5:1.0: Quirks match for vid 1058 pid 0704: 8000
Mar 29 19:51:48 miki-desktop kernel: scsi13 : usb-storage 2-5:1.0
Mar 29 19:51:48 miki-desktop mtp-probe[21555]: checking bus 2, device 9: "/sys/devices/pci0000:00/0000:00:04.0/usb2/2-5"
Mar 29 19:51:48 miki-desktop mtp-probe[21555]: bus: 2, device: 9 was not an MTP device
Mar 29 19:51:49 miki-desktop kernel: scsi 13:0:0:0: Direct-Access WD 5000BMV External 1.75 PQ: 0 ANSI: 4
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Write Protect is off
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Mode Sense: 23 00 00 00
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:52 miki-desktop kernel: sdb: sdb1 sdb2
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] Attached SCSI disk
Mar 29 19:52:20 miki-desktop udisksd[21107]: Powering off /dev/sdb - successfully sent SCSI command START STOP UNIT
Mar 29 19:52:20 miki-desktop udisksd[21107]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:04.0/usb2/2-5/remove
Mar 29 19:52:20 miki-desktop kernel: usb 2-5: USB disconnect, device number 9
What is interesting is that on first connect, the drive is using ehci-pci driver, then after the first try powering it off, the drive appears to reconnect using the ohci-pci driver. Not just that, it appears to 'jump' from one USB bus to another. How is this even possible?
$ lspci
00:00.0 Host bridge: NVIDIA Corporation MCP73 Host Bridge (rev a2)
00:00.1 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a2)
00:01.0 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.1 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.2 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.3 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.4 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.5 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.6 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:02.0 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:03.0 ISA bridge: NVIDIA Corporation MCP73 LPC Bridge (rev a2)
00:03.1 SMBus: NVIDIA Corporation MCP73 SMBus (rev a1)
00:03.2 RAM memory: NVIDIA Corporation MCP73 Memory Controller (rev a1)
00:03.3 Co-processor: NVIDIA Corporation MCP73 Co-processor (rev a2)
00:03.4 RAM memory: NVIDIA Corporation MCP73 Memory Controller (rev a1)
00:04.0 USB controller: NVIDIA Corporation GeForce 7100/nForce 630i USB (rev a1)
00:04.1 USB controller: NVIDIA Corporation MCP73 [nForce 630i] USB 2.0 Controller (EHCI) (rev a1)
00:0a.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0b.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0c.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0d.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0e.0 IDE interface: NVIDIA Corporation MCP73 IDE (rev a2)
00:0f.0 Ethernet controller: NVIDIA Corporation MCP73 Ethernet (rev a2)
01:06.0 Multimedia audio controller: C-Media Electronics Inc CMI8738/CMI8768 PCI Audio (rev 10)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4550]
02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV710/730 HDMI Audio [Radeon HD 4000 series]
$ lsusb
Bus 001 Device 009: ID 1058:0704 Western Digital Technologies, Inc. Passport External HDD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 007: ID 15ca:0101 Textech International Ltd. MIDI Interface cable
Bus 002 Device 003: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard
Bus 002 Device 002: ID 046d:c001 Logitech, Inc. N48/M-BB48 [FirstMouse Plus]
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Before the first power-off attempt:
$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/10p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 7, If 0, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 4: Dev 7, If 1, Class=Audio, Driver=snd-usb-audio, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
|__ Port 5: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
After the first power-off attempt:
$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/10p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 7, If 0, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 4: Dev 7, If 1, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 5: Dev 10, If 0, Class=Mass Storage, Driver=usb-storage, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
Does anyone know how to fix this problem? Is it a device quirk, a driver bug or something?
Last edited by ackalker (2014-03-29 19:21:04)

Just to be sure, I rebooted my system, shut down lightdm from another VT, made sure that really nothing is using the drive, no partitions are mounted, no services that could try to use the drive (except udisks2.service, could this one be the problem? But how am I supposed to use the udisksctl command when the service isn't running?).
Tried the same command again. same result: I needed to run it twice in a row for it to 'take'.
What I find even more fascinating: how can a USB device jump from one USB bus to another like that? I've honestly never seen anything like this before :-)
Last edited by ackalker (2014-03-29 19:35:29)

I have just bought a macbook pro and i want to use an ext hard drive with it which i previously used on a windows computer, but when i plug it in it doesn't show up on my macbook pro, I've wiped it and just need to format it but don't know how, help

i have just bought a macbook pro and i want to use an ext hard drive with it which i previously used on a windows computer, but when i plug it in it doesn't show up on my macbook pro, I've wiped it and just need to format it but don't know how, any help would be much appreciated

Try the other USB port. If it still doesn't show up in Disk Utility then there may be something wrong with your Mac. Try something else in each USB port and see if it is seen. If the other thing, like a USB thumb drive, does show up in disk utiltiy then the USB ports are fine.
Power down the system and restart with the drive connected, go to DU and see it it is seen.

Need help on connecting USB: 300GB external hard drive to wireless router

Hello,
I am trying to connect USB2.0 Maxtor 300GB external hard drive to my wireless router. Tried using Linksys new product NSLU2 which allows any USB cable external hard drive to NSLU2 device/network storage hub and then connect this NSLU2 directly to wireless router with the help of 10/100 Ethernet cable which allows to access external hard drive wirelessly.
Unfortunately Linksys NSLU2 is designed to supports USB external drives up to 250GB only.
Can any one advice me if there is any device I can use to connect my external hard drive to wireless router and access files without connecting/carrying USB external drive?
Any help is greatly appreciated.
Thanks in advance!
Arvind

Have a look at http://www.ximeta.com and their solutions. Especially
http://www.ximeta.com/web/products/ndenclosure1_en.php might be interesting, as you already have a HD.
Regards, Martin

I formatted my ext hard drive and changed it to mac os x extended(journaled). then i put in all my data back. after a while, i insert the hard drive but my macbook cannot read it. plz help

i formatted my ext hard drive and changed it to mac os x extended(journaled). then i put in all my data back. after a while, i insert the hard drive but my macbook cannot read it. plz help

SanandaDutta
tried on a different mac. The same problem exists.
If that is the case, its extremely unlikely you have a bad USB cable on the seagate, rather as I mentioned earlier a bad SATA bridge card.
If the Seagate 1TB USB external wont open on either Mac and youve verified same (try a diff. USB cable if you have one however this is nearly never the case),....then to get the data off that HD (unless it is dead which is also extremely unlikely),......then you would need to extract the HD from its case and insert same into either a HD dock or USB HD enclosure.
8 out of 10 seemingly dead inopperable 1-3+ year old external HD are perfectly fine, rather the cheap 50 cent SATA bridge card fries and dies (alas)
reply back if you need help in extracting same.

Usb 3.0 hard drive doesn't work

i boot my laptop with ubuntu ,the usb3.0 hard drive could be recognized by usb3.0 port without external power, but archlinux cannot.
the write speed is 43.7 MB/s in ubuntu. it seems like that this is only usb2.0 speed.
can archlinux use usb3.0 as usb2.0?
1) the ubuntu dmesg is
[ 110.038673] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd
[ 110.056253] scsi5 : usb-storage 4-1:1.0
[ 111.992005] scsi 5:0:0:0: Direct-Access WD My Passport 0730 1016 PQ: 0 ANSI: 6
[ 111.992507] scsi 5:0:0:1: Enclosure WD SES Device 1016 PQ: 0 ANSI: 6
[ 111.994139] sd 5:0:0:0: Attached scsi generic sg2 type 0
[ 111.994347] scsi 5:0:0:1: Attached scsi generic sg3 type 13
[ 115.358425] sd 5:0:0:0: [sdc] 976707584 512-byte logical blocks: (500 GB/465 GiB)
[ 115.358660] sd 5:0:0:0: [sdc] Write Protect is off
[ 115.358667] sd 5:0:0:0: [sdc] Mode Sense: 47 00 10 08
[ 115.358897] sd 5:0:0:0: [sdc] No Caching mode page present
[ 115.358904] sd 5:0:0:0: [sdc] Assuming drive cache: write through
[ 115.359692] sd 5:0:0:0: [sdc] No Caching mode page present
[ 115.359698] sd 5:0:0:0: [sdc] Assuming drive cache: write through
[ 115.375489] sdc: sdc1
[ 115.376473] sd 5:0:0:0: [sdc] No Caching mode page present
[ 115.376481] sd 5:0:0:0: [sdc] Assuming drive cache: write through
[ 115.376487] sd 5:0:0:0: [sdc] Attached SCSI disk
[ 115.466372] ses 5:0:0:1: Attached Enclosure device
2) use dd to test the write speed of ubuntu.
dd if=/dev/zero of=/media/siyuan/test.file bs=1G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 24.5506 s, 43.7 MB/s
this issue still exists when i upgrade the kernel to 3.5.5-1-ARCH
hi, everyone
i have a usb 3.0 hard drive and a laptop with usb 3.0 port.
when the hard drive is connected to the usb 3.0 port, the drive could not be found.
the dmesg output is listed below.
additinal info:
1) the usb 3.0 hard drive can be found when connected to usb 2.0 port.
2) the usb 2.0 hard drive can be found when connected to usb 3.0 port.
3) mouse works when connected to the usb 3.0 port.
it seems that it is not the linux driver's problem, because the mouse could work and the hard drive is found due to the dmesg.
is this a bug?
would someone help me?
thank you!
dmesg out put when usb 3.0 hard drive is conneted to usb 3.0 port:
[ 646.077385] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd
[ 646.171319] usbcore: registered new interface driver uas
[ 646.175313] Initializing USB Mass Storage driver...
[ 646.175501] scsi4 : usb-storage 2-2:1.0
[ 646.175665] usbcore: registered new interface driver usb-storage
[ 646.175667] USB Mass Storage support registered.
[ 657.149403] scsi 4:0:0:0: Direct-Access WD My Passport 0730 1016 PQ: 0 ANSI: 6
[ 657.149974] sd 4:0:0:0: [sdb] 976707584 512-byte logical blocks: (500 GB/465 GiB)
[ 657.150223] sd 4:0:0:0: [sdb] Write Protect is off
[ 657.150232] sd 4:0:0:0: [sdb] Mode Sense: 47 00 10 08
[ 657.150456] sd 4:0:0:0: [sdb] No Caching mode page present
[ 657.150462] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 657.151436] sd 4:0:0:0: [sdb] No Caching mode page present
[ 657.151440] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 657.159907] sdb: sdb1
[ 657.160852] sd 4:0:0:0: [sdb] No Caching mode page present
[ 657.160858] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[ 657.160861] sd 4:0:0:0: [sdb] Attached SCSI disk
[ 657.268875] usb 2-2: Device not responding to set address.
[ 657.471456] usb 2-2: Device not responding to set address.
[ 657.674211] usb 2-2: device not accepting address 2, error -71
[ 657.780745] usb 2-2: Device not responding to set address.
[ 657.983519] usb 2-2: Device not responding to set address.
[ 658.186214] usb 2-2: device not accepting address 2, error -71
[ 658.292717] usb 2-2: Device not responding to set address.
[ 658.495537] usb 2-2: Device not responding to set address.
[ 658.698277] usb 2-2: device not accepting address 2, error -71
[ 658.804774] usb 2-2: Device not responding to set address.
[ 659.007557] usb 2-2: Device not responding to set address.
[ 659.210298] usb 2-2: device not accepting address 2, error -71
[ 659.210366] usb 2-2: USB disconnect, device number 2
[ 659.213797] sd 4:0:0:0: [sdb] Unhandled error code
[ 659.213804] sd 4:0:0:0: [sdb]
[ 659.213808] Result: hostbyte=0x01 driverbyte=0x00
[ 659.213812] sd 4:0:0:0: [sdb] CDB:
[ 659.213814] cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
[ 659.213826] end_request: I/O error, dev sdb, sector 0
[ 659.213830] Buffer I/O error on device sdb, logical block 0
[ 659.214647] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800b375fe40
[ 659.214656] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800b375fe00
[ 659.320085] usb 2-2: Device not responding to set address.
[ 659.522884] usb 2-2: Device not responding to set address.
[ 659.725646] usb 2-2: device not accepting address 3, error -71
[ 659.832077] usb 2-2: Device not responding to set address.
[ 660.034905] usb 2-2: Device not responding to set address.
[ 660.237663] usb 2-2: device not accepting address 4, error -71
[ 660.344135] usb 2-2: Device not responding to set address.
[ 660.546938] usb 2-2: Device not responding to set address.
[ 660.749642] usb 2-2: device not accepting address 5, error -71
[ 660.856129] usb 2-2: Device not responding to set address.
[ 661.058946] usb 2-2: Device not responding to set address.
[ 661.261701] usb 2-2: device not accepting address 6, error -71
[ 661.261722] hub 2-0:1.0: unable to enumerate USB device on port 2
Last edited by wangsiyuan (2012-10-09 15:30:05)

tail -f /var/log/messages.log is similar to the dmesg.
1) I have a usb 2.0 hard drive which could use the usb 3.0 port.
2) I remeber x230 with windows XP could use my usb 3.0 hard drive with the usb 3.0 port
3) so, it is a problem of archlinux rather than hardware?
thank you!
output of tail -f /var/log/messages.log:
Sep 28 22:00:15 siyuan kernel: [ 1631.021315] usb 4-2: new SuperSpeed USB device number 2 using xhci_hcd
Sep 28 22:00:15 siyuan kernel: [ 1631.115610] usbcore: registered new interface driver uas
Sep 28 22:00:16 siyuan kernel: [ 1631.125728] Initializing USB Mass Storage driver...
Sep 28 22:00:16 siyuan kernel: [ 1631.125929] scsi4 : usb-storage 4-2:1.0
Sep 28 22:00:16 siyuan kernel: [ 1631.126079] usbcore: registered new interface driver usb-storage
Sep 28 22:00:16 siyuan kernel: [ 1631.126081] USB Mass Storage support registered.
Sep 28 22:00:27 siyuan kernel: [ 1642.100134] scsi 4:0:0:0: Direct-Access WD My Passport 0730 1016 PQ: 0 ANSI: 6
Sep 28 22:00:27 siyuan kernel: [ 1642.100581] sd 4:0:0:0: [sdb] 976707584 512-byte logical blocks: (500 GB/465 GiB)
Sep 28 22:00:27 siyuan kernel: [ 1642.100852] sd 4:0:0:0: [sdb] Write Protect is off
Sep 28 22:00:27 siyuan kernel: [ 1642.111571] sdb: sdb1
Sep 28 22:00:27 siyuan kernel: [ 1642.112643] sd 4:0:0:0: [sdb] Attached SCSI disk
Sep 28 22:00:27 siyuan kernel: [ 1642.219396] usb 4-2: Device not responding to set address.
Sep 28 22:00:27 siyuan kernel: [ 1642.422078] usb 4-2: Device not responding to set address.
Sep 28 22:00:27 siyuan kernel: [ 1642.731298] usb 4-2: Device not responding to set address.
Sep 28 22:00:27 siyuan kernel: [ 1642.934099] usb 4-2: Device not responding to set address.
Sep 28 22:00:28 siyuan kernel: [ 1643.243323] usb 4-2: Device not responding to set address.
Sep 28 22:00:28 siyuan kernel: [ 1643.446148] usb 4-2: Device not responding to set address.
Sep 28 22:00:28 siyuan kernel: [ 1643.755321] usb 4-2: Device not responding to set address.
Sep 28 22:00:28 siyuan kernel: [ 1643.958170] usb 4-2: Device not responding to set address.
Sep 28 22:00:29 siyuan kernel: [ 1644.160978] usb 4-2: USB disconnect, device number 2
Sep 28 22:00:29 siyuan kernel: [ 1644.162815] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c41dae40
Sep 28 22:00:29 siyuan kernel: [ 1644.162820] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c41dae00
Sep 28 22:00:29 siyuan kernel: [ 1644.267359] usb 4-2: Device not responding to set address.
Sep 28 22:00:29 siyuan kernel: [ 1644.470263] usb 4-2: Device not responding to set address.
Sep 28 22:00:29 siyuan kernel: [ 1644.779375] usb 4-2: Device not responding to set address.
Sep 28 22:00:29 siyuan kernel: [ 1644.982208] usb 4-2: Device not responding to set address.
Sep 28 22:00:30 siyuan kernel: [ 1645.291402] usb 4-2: Device not responding to set address.
Sep 28 22:00:30 siyuan kernel: [ 1645.494307] usb 4-2: Device not responding to set address.
Sep 28 22:00:30 siyuan kernel: [ 1645.803400] usb 4-2: Device not responding to set address.
Sep 28 22:00:30 siyuan kernel: [ 1646.006252] usb 4-2: Device not responding to set address.
broken pipe wrote:
is it a 2,5" drive with no external power supply?
run: tail -f /var/log/messages.log
and plug in your device, any other errors in log files?

Issue: USB HUB displaying corrupt drive Icons

Hello everyone,
On my new computer (Windows PRO 8.1 64 Bit, Intel X99 (i7-5960X CPU)) I decided to install a 3.0 USB HUB. The HUB is a EXSYS EX-1181 10-port USB 3.0 HUB. In my initial configuration of my computer, my wireless headphone (LOGITECH wireless G930 Headset) signal
receiver was connected to the HUB as well as other USB keys. Little did I know that for proper use of my wireless headphones, the wireless signal receiver had to be connected
directly onto the computer and not indirectly like via a USB HUB port. Upon correction of the problem, my headphones worked properly.
However the fact that I plugged the headphones wireless signal receiver onto the HUB somehow corrupted the USB HUB. Now, whenever I plug a drive (USB stick, external hard drive, Ipod,...) onto the HUB, my computer always shows the connected drive with an
icon corresponding exactly to the headphones. No matter which port I use and no matter what I connect to the HUB, the drive will always have a Headset Icon on Windows Explorer and not the standard drive icon image.
Could anyone please help me with this issue?
Thank you a lot,
Best,
Marth 286

Hello Marth,
Since this issue is related with USB driver development, I move it to the driver forum there are driver experts will help you.
Regards.
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I-tunes on ext. hard drive

I would lie to free up space on my hard drive. A friend said his girls have their music on an ext. hard drive. I bought one and was able to copy the I-Tunes folder to the hard drive. Using windows I was able to hold the shift key while pressing start-Itunes-itunes and the window came up to create or choose a library. Here is the question, What do I do from here? Do I have to create a library first and then choose it? If so how do I do that? My ultimate goal being to have I-tunes open it's library on the ext. hard drive and I want to remove the hard drive that is currently on my lap top. Someone please help, and thank you in advance. JAY

hi, i'm having the same issue.
I followed itunes help and moved my entire library (20 gigs worth of stuff) to my lacie external hard drive. I opened up preferences and selected where I want itunes to find all my music, and itunes can't find any of my music. i'm having to manually select each song from my external hard drive right now, and that is taking FOREVER. I tried several different things, like consolidate library, and I tried messing around in itunes preferences, but nothing. any help would be greatly appreciated, as my macbook only has 60gb of space and i'd like to keep it as free as possible.
thank you!

How to delete pics from LR ext. hard drive within program.

I can't delete pics from disk. Error say finder doesn not support the volume. Using ext. hard drive and not in collection. New macbook pro with LR 4. Never experienced this problem on PC with LR 3. It appears this is a problem for other users. Has anyone founds a solution??

Thus must be a pure Mac-Finder/permissions problem.
In LR, as you corrctly assume, when you are in a folder (rather than a collection), you can hit the delete-key for any image, and you will get the dialog box asking for just removing from catalog or executing a physical deletion also in your operating system.
So I would continue any further troubleshooting in Mac Finder.
If Finder would not support the volume of the external hard disk (due to wrong formatting for Mac?), how can the image be read then?
If only deletion is denied, it might be a permissions problem.
Cornelia

Moved iTunes library to an ext hard drive to make space on my int drive... Followed steps from apple. Now I cannot access my music... It says: "File could not be used because the original file cannot be found. Would you like to locate it?"

Moved iTunes library to an ext hard drive to make space on my int drive... Followed steps from apple. Now I cannot access my music... It says: "File could not be used because the original file cannot be found. Would you like to locate it?"
I moved my iTunes library to my external hard drive some time ago and I followed the directions listed here on the apple support page. It did copy my library and now is on my hard drive... I can open iTunes and use it to sync all of my devices but I would like to play my music... I can see all of my music files but can not play them if I click on an album or song it says the following: "(file name) could not be used because the original file cannot be found. Would you like to locate it?" I click locate but do not know where to go from there? I need a way to access all files and not to hunt down one at a time on my hard drive... I am pretty sure I deleted the original library to make space on my internal drive which was the reason for moving it. I have tried and tried to fix it and do not have a lot of time to do so with a one and two year old at my house who do not like it whenI sit down at my computer. What to do??? Any help is much appreciated!!!

See Make a split library portable. Move all of the bits of the library together in the the correct shape and it should work. Or undo exactly what you did and then start over.
If you're a former Windows user don't try merging two folders together that have the same name by dropping one into the same folders as the other, as that goes badly on a Mac.
tt2

Multiple iPhoto libraries on my ext hard drive back up

Hi I have a problem with multiple iPhoto libraries on my ext hard drive back up They are different sizes and large 120gb Is there any way I can rationalise the libraries without the risk of losing data? My iPhoto library on the Mac appears to be complete but with >200gb of photos I cannot be sure.

I upgraded to Lion OS and suffered multiple crashes necessitating a complete rebuild of the system - reformat the main hard drive and install Lion OS from a disk In an effort to be absolutely sure I didn't lose data I have been overenthusiastic in transferring photos to the backup disk dragging and dropping files that contained images as well as a full transfer of "mymac" before reformating. Time machine backup was not realistic as this was the one operation which caused most of the "hangs" System now appears to be working well with Lion OS but I have masses of duplicate jpeg files in multiple folders and libraries - I am considering purchasing Duplicate Annihilator to deal with the duplicates then perhaps I should try to merge the libraries with iPhoto manager?

USB Hub & Ext Hard Drives

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