External harddrive reads on only 1 USB

Hey everyone, i have recently taken harddrive out of ps3 and formated as i have done before. I have it in external case and all that. Anyways, the harddrive now reads and writes fine on the USB on the right side of my mac, but not the USB on the left side..? Yet my other harddrive works on both, so it cant be the usb drive. any suggestions?

The USB specification calls for all powered USB ports to be able to supply at 500mA. I know that some 2.5" USB HDD cages have a goofy (and non-compliant, IIRC) cable with the computer side having two USBA connectors; one for power and data and another for additional power.
I had my MBP (3,1) in for service to repair an optical drive that wasn't burning. I had them look at the USB ports for the same issue as the OP. Left port will power USB keychain drives and mice (and other low-power devices) but not SSD or portable HDD drives. Right port is fine, works with everything. Both ports worked fine for a while.
They claimed that they couldn't reproduce the problem but explained that the earlier MBP (3,1 and newer, maybe?) had this "feature" and it was related to the fact that one of the ports will still provide power in sleep mode. I have no idea how that works out logically but that's what they said.
I picked up my MBP and spoke to a customer service rep on iPhone4 launch day so they were a little busy and the actual "Genius" that worked on my laptop wasn't available for me to talk to or demonstrate the issue for.
Honestly, I'm not sure if I believe them but I am sure that I have little additional time to mess around with it.
Message was edited by: jkositarut - didn't realize that the vernacular term for post-digestive gas emission was taboo.
Message was edited by: jkositarut

Similar Messages

  • External harddrive read only

    I have an iMac and am running Lion. I have an external harddrive which I've had for months. It's worked fine (uploading files to it and deleting files from it). But suddenly I can't do that. I've checked the Info (which tells me under "Sharing and Permissions", "You can only read"). But there is no place in the Info panel for me to change this.
    To my knowledge I did nothing to make this happen. How can I change this so I can once again upload to and delete from my external harddrive?
    Regards, Bongani

    For what do you use this drive?  If it is a data-only drive (e.g., you just use it for iTunes) you can set it to ignore ownership on the volume which I find a lot more convenient than having to mess with permissions.
    I use Tiger OS. When I get Info on a drive there is also a "Details" button under the ownership and permissions area where I can adjust things.
    Trouble adding music to iTunes library or importing audio CD - http://support.apple.com/kb/ts1387

  • USB 3.0 External hard drive working only as USB 2.0

    Hello all.
    I have a MacBook Pro mid 2012 (specs below) which has two USB 3.0 ports. I have a Kingston USB 3.0 stick and a Toshiba 1TB USB 3.0 external hard drive. With Lion/Mountain Lion/Mavericks, both stick and hard drive worked fine, but since I updated to OS X 10.10 Yosemite, both work as USB 2.0 devices, with slow transfer speed and, in the case of the hard drive, it has a blue/white LED that indicates the mode (blue = USB 3.0 / white = USB 2.0) and it only lights up with white color.
    It's not a device problem, because both work on Windows 8.x machines. I was guessing that it was some kind of firmware or motherboard's usb driver problem but I looked for firmware updates and found nothing.
    Is anyone having issues with USB 3.0 ports? Can you help me with this? Any advice would help.
    Thanks a lot for your patience and help.

    Hi jesusbet,
    Thanks for visiting Apple Support Communities.
    It sounds like the USB 3 ports on your MacBook Pro are not operating at the expected speed.
    The first troubleshooting step I'd suggest in this case is to reset the System Management Controller (SMC) on your MacBook Pro using these instructions:
    Shut down the computer.
    Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
    On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
    Release all the keys and the power button at the same time.
    Press the power button to turn on the computer.
    Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
    Intel-based Macs: Resetting the System Management Controller (SMC)
    If the symptom continues, you can also reset the PRAM:
    OS X Yosemite: Reset your computer’s PRAM
    These two hardware resets can resolve many unexpected behaviors that affect hardware on a Mac.
    All the best,

  • How do you access files from an external harddrive connected to TC through USB from iPad or windows computer?

    How do you access external hard drive data that is connected to TimeCapsule through USB from iPad or knows based computer?

    Filebrowser for the iPad does this very well.
    FileBrowser - Access files on remote computers for iPhone, iPod ...
    Cannot help on Windows, but another PC guy might be able to answer. Some possible clues here:

  • How to use a new external harddrive as a backup, harddrive in TC as an external drive and the new external harddrive backs up TC internal drive as well?hen the new external harddrive to back up?

    I maxed out my TC (TimeCapsule) internal harddrive (1TB) since my pictures + video + music library in an external harddrive became larger than the capacities of the TC one. I plan to buy a 2TB external harddrive, connect it to the USB port of the TC and use it for backups. Then use the TC's internal harddrive as an external harddrive. I want to back up the TC's internal harddrive to the new external harddrive through TimeMachine. How do I make it happen? An alternative way would be replace the TC's internal harddrive with 2/3TB one. If you have suggestion, please let me know.

    cosifan wrote:
    I want to back up the TC's internal harddrive to the new external harddrive through TimeMachine. How do I make it happen?
    you can't. time machine will not backup networked drives such as the TC's internal disk. 3rd party applications (for instance ChronoSync) may be able to do that, though.
    An alternative way would be replace the TC's internal harddrive with 2/3TB one.
    click here for information.

  • My external harddrive has switched to read only

    i have a western digital 1 tb hard drive which is formated to fat 32.
    everything was going perfect on it until one day i was copying the whole drive to an older hard drive to create a back up when it came to my attention that my current external harddrive had become read only.
    it made no sense.

    Select the drive on your Desktop and then Get Info (command+i) In the window that opens, down at the bottom, are the permissions.
    Click the small padlock icon and enter your admin password then change the Privilege to Read & Write, if you're asked to apply the same setting to sub-folder say yes. When that's done close the window.

  • Satelite a215-s7437 only boot with external harddrive usb atached

    My laptop a215-s7437 boot but after the logo i have a black screen no mouse or anything, but If I connetc my external harddrive conected with usb It will boot and works find
    I have no ideia wha is wrong ????
    Please help.........

    Wow, that seems very odd to me!
    Have you tried resetting the BIOS to defaults? See if that works.
    If not, try updating the BIOS.
    ACPI Flash BIOS version 2.00 for Satellite A215 (PSAFGU/PSAFHU) 32/64-bit(v2.00; 02-24-2010; 6.1M)
    If you still can't solve your issue and no one in the community can help, contact support to speak with a tech support agent at (800) 457-7777.
    - Peter

  • Can I access my external harddrive if I connect it to my Airport via USB?

    I have a basic router providing a wireless network and access to the internet (given by my internet provider). And then I recently bought an Airport adaptor and connected my stereo, and now I'm playing music wirelessly.
    My question is then, will I be able to access my external harddrive if I connect it to my Airport via USB?
    It's an Airport Express Base Station (the one with only jack, usb and ethernet)

    Sorry but the USB port on the AirPort Express (AX) does not support USB hard drives.

  • ESATA/USB-Combo-Port on T520 connect to external Harddrive case

    I have a eSATA/USB-Combo-Port on a T520. I think there are cables to connect a 2,5" Harddisk direct to the Port with only one cable for eSATA and Power.
    I am looking for an external case for a 2,5" Harddisk that have a USB-Port (to connect to other Computers) AND a Port for my eSATA/USB-Combo-Port.
    Does anyone know where to buy a suitable Case?
    I Want to connect the Disk to my T520 using the eSATA speed (with one cable) with the option to connect it to other computers who only have USB 2.0.
    Thank you very much.

    Hi Jens,
    I haven't thought to look for one of those before.  Is this the kind of thing you're after?
    I think eSATAp is the key here, if I understand your question.
    [edit] the 1st link is an eSATAp only cable, so it doesn't help with your "other computer" connections.
    The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.  The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
    English Community   Deutsche Community   Comunidad en Español   Русскоязычное Сообщество

  • ThinkPad External DVD Reader / Writer USB 2.0??

    Hi, one of the largest online selling and buying website in New Zealand, trademe, has listed via a buyer a ThinkPad External DVD Reader / Writer USB 2.0. One of my friend bought it and found that it is shown on the computer hard drve as a Philips DVD RAM SDVD 8821 HUSB. The buyer claimed that it is a genuine product bought from IBM shop. I am asking if there is a possibility for that to happen? If it is a fake product of IBM, is my friend liable to buying fake stuff. I think she was duped to think it is a genuine product. I asked this question via the IBM Australia. The respondent told me the model number was "Part Number - 43N3264". I had a search on google and the part number of the leveno external drive is not similar to the one I bought from the online shop. Mine one has got the logo of "thinkpad" on the bottom right hand corner. Whereas the external drive with the part number 43N3264 had the logo of leveno on the bottom left hand side. That's why I need to ask you in this inquiry. Intuitively, I don't think "thinkpad" has manufactured external drive. It has only been used as laptop models. Thanks for your attention.

    there are several fake ones on the market, some are well made while others are not.
    AFAIK the genuine one don't have a thinkpad logo, but rather a Lenovo logo.
    Jin Li
    May this year, be the year of 'DO'!
    I am a volunteer, and not a paid staff of Lenovo or Microsoft

  • "A USB device is drawing too much power..." External Harddrive

    My 15" Macbook Pro, OS X, 10.6.8, 2GHz Intel Core i7, 4GB memory keeps booting my 1 TB Seagate external harddrive off because it is drawing too much energy.  It's done this repeatedly for about two weeks, and now it won't appear on the desktop (while it still whirs when I attach it and the LED comes on).  I checked how much energy it's drawing in the System Profiler.  500, then very little after I restarted both machines, and then too much again.  I tried connecting it with an identical harddrive's cable (my housemate has the same model), and it wouldn't register then, either.
    ...I suspect it's the harddrive as opposed to my MBP!  Or I hope it is, and not a problem with my USB ports or anything like that.  I'm surprised because the Seagate is connected to the mains...  But if it is the Mac, how would I go about checking to know if it is?  (My Wacom Bamboo is working fine.)
    Anyone with any ideas, suggestions?  Anything else I need to inform you guys of?

    :-) use your room mate's and do it!
    pretty old drive, is it makeing clicking noises? try re repairting it before you go erasing but I think yoru system is giving you some sound advice. but I would go further in saying it's either too full or too old and is on it's last legs.
    If you are afraid you're going to be loosing some important data that you haven't backed up get DiskWarrior as this has saved me from loosing my hair a few years back when my HDD crashed.
    if you do get this, be sure to be picky on the things you keep as it will not always work and it sounds like your hard drive is on it's last legs. Imagine a door slowly closing everytime it spins up.

  • E3000 shows "USB is not supported" error with External Harddrive

    I have the E3000 router and recently purchased a USB WD (Western Digital) 2TB External Harddrive.  I plug the Harddrive into the router, open the router homepage ( then click on Storage > Disk and I get a "The attached USB is not supported" error - any suggestions on how to fix this?
    Thanks for any help!
    Go to Solution.

    Likely Final Update:  WD Support sent me a link to download / install SmartWare and solve the problem I was having with the SmartWare software ("Drive Settings" was greyed out).  Once I got SmartWare back up and running I was able to change the "Drive Settings" within SmartWare.  As the last update suggested, I modified the sleep timer settings and security (password settings) and tested to get the following results:
    Sleep Timer on / Password protection on:  E3000 shows "USB not supported"
    Sleep Timer off / Password protection on:  E3000 shows "USB not supported"
    Sleep Timer on / Password protection off:  WD Hard Drive seen and seems to function properly when connected to E3000
    Sleep Timer off / Password protection off:  WD Hard Drive seen and seems to function properly when connected to E3000
    So (other than maybe some inital problems with the WD SmartWare) it appears the "USB is not supported" error is due to the Password protection being turned on for the External Hard Drive.  This point should be highlighted in the Western Hard Drive materials but I don't see it anywhere on the box or in the manual (maybe its fine print in the manual).  Cisco and / or Western Digital are screwing us by not allowing password protection (or making this point known) on at this least model of Hard Drive!
    Thanks again to everyone that helped with troubleshooting this!  

  • Won't read external harddrive

    I have a verbatim external harddrive. after only 3 months, it's already broke and my mac can't read the harddrive. this is a long shot but does anyone have any ideas. i find it hard to believe that this thing is broke after only 3 months.

    You didn't say what model mac you have. First reset the PRAM:
    1. Shut down the computer.
    2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    3. Turn on the computer.
    4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    6. Release the keys.
    Then, if you have a Powerbook or iBook, you can reset the PMU, or, if an Intel-based system, do an SMC reset.
    If those actions don't fix it, then take advantage of the warranty to replace the external drive with the faulty electronics.

  • Generic USB hub doesn't allow iMac to recognize external harddrive and iPhone.

    I have an iMac (few years old) and placed a generic USB hub on one of the ports. My iMac doesn't recognize my external harddrive or iPhone cradle, unless I connect them directly to the back of the iMac. Are there hubs that work better?

    Any of these hubs should work.

  • Declare USB-port as external harddrive

    Hi everyone.
    I have had the following idea. I have got a dvd-player which has got an usb-port to plug in some flash-drives or stuff like that an play the MP3s that are on the drive. Since I am a very lazy person I was wondering whether it was possible to declare one usb-port as an usb-output. so that it is connected with some folder that contains data. and the usb-port somehow mimics the existence of a external drive that contains the data in the folder. so that I only have got to plugin a wire that connects laptop and dvd-player.
    thanks in advance! anything that goes into this direction will be appreciated!

    thanks for the quick reply.
    first of all: after having setup arch you can easily be called a lazy person, since for me personally there never was any not self in flicted issue (read arch rocks)
    and secondly i was wondering that too. I do not have any clue how the USB-Protocoll works and what hardware-specs are met. As far as I know there should exist some wires that have two male plugs on their ends. So I would use one of these. I am aware of the fact that this is not really a common application of the usb-ports on both sides. but i think most of the configuration should be done on the laptop-side. since the dvd-player only expects devices that are like an external drive.

Maybe you are looking for