External Firewire HD not recognized by MacPro

I have a Thunderbolt Display that works fine. However - i just got a WD 2tb Firewire 800 external drive. I plugged it into the Thunderbolt display and it is not recognized. No matter what i do. If i unplug it from back of display and plug directly into Laptop - it sees it fine.
Fairly new to Mac's so am i missing something? A setting or something?? Thanks for any help.
FYI - laptop is MacBook Pro from 2011 running latest OS.

No, you're not missing anything... it should just work. I have four FW800 drives daisy-chained to my Thunderbolt Display - and they just work. I'm on a 15" late 2011 MBP running 10.8.2 as well.
Something's up - either with your Display, your TB connection or the drive. I suspect the Display or the drive. Is your Display still under warranty? Even if it's not, I would first try it out with a different FW drive (Western Digital is notorious for just not working with Macs) or, if that doesn't work, take the whole unit into your local Apple Store or AASP.
Clinton

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External firewire drive not recognized when re-attached after being ejected

I'm using a Seagate external drive for Time Machine backups. When I need to disconnect the drive from the Macbook's firewire port, I drag the drive icon to the trash/eject icon. When the drive icon disappears from the desktop, I unplug the cable. If I plug the drive in again, the drive responds by lighting up and spinning up, but the icon for the drive never appears on the desktop or in the Finder window. Time Machine doesn't run as scheduled because it doesn't know the drive is attached. If I briefly power down the drive before plugging in its cable, the Mac recognizes the drive and it can be used by Time Machine. Is there a different procedure for unmounting the drive that would eliminate the need to power it off before reconnecting?

Thanks for the reply. The drive is mounted properly when I follow your procedure, same as it was when I powered down the drive. Your procedure differs from what I described in that the drive is powered down before the cable is unplugged. Maybe that's the safest approach. But I was looking for a way to avoid powering down the external drive since that involves unplugging the power connector (i.e., there is no power switch). Any way to avoid the power down?

External hard drive not recognized by OS

External FW HD not recognized by Disk Utility and "not available" to Time Machine. Had worked fine until last attempt to B.U. Core Duo, OS10.8.4. Suggestions to make this drive available again?

If the drive has more than one interface (USB, FireWire, Thunderbolt, eSATA), try one of the other interfaces.
Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Boot into Recovery and launch Disk Utility. Is the drive recognized?
Start up in Safe Mode and test.
Reset the NVRAM.
Reset the System Management Controller.
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock.

External Optical Drive Not Recognized

I've been using a Pioneer DVR111 external firewire drive for the last few months. Until tonight it's performed flawlessly.
I ripped a couple of CDs into iTunes tonight, then when I tried to do another it wouldn't work. The CD wouldn't mount and the drive wasn't recognized by system profiler. I hear the drive spin up when the disc is inserted, but that's about it.
I then tried the disc in the internal drive. Also no response.
So I shut the computer down, unplugged everything and waited a few minutes. I think this is called resetting the PRAM or something like that.
I rebooted from the install disc and rann hardware test. Passed without problem.
I rebooted again and everything seemed fine. Both optical drives were recognized in Profiler.
However, when I inserted a disc in the external drive, it again wasn't recognized. And when I rechecked Profiler, the drive had disappeared. The internal drive, however, seems to have remained okay.
Does anyone have any idea what's going on here? Might this be caused by a faulty external drive, or something else? The external was working fine a couple of hours ago, and I'm a little bit spooked that my internal was acting oddly for a time.
Thanks in advance for the help.
ron
iMac Intel Duo Core Mac OS X (10.4.8)

Can you be more specific about "Arch Linux don't recognized it"?
Post the output of lsusb and dmesg.
Do you have an internal optical drive? If not, what's the output of 'cat /proc/sys/dev/cdrom/info'?

External hard drive not recognized... help please.

okay, well here is the story:
my iBook G4 had its stock 30gb hard drive in it and it was running extremely low on space. so i figured i didn't want to carry around an external hard drive, therefore i would buy an internal hard drive an install it. so i purchased a new 2.5" 80gb hard drive and called up the local apple store. they told me that although it was under warranty, that it did not cover hard drive installation. so i looked it up online and found step by step instructions to install the hard drive. so after lots of hard work and many screws, i installed the new hard drive successfully... but i still had this perfect 30gb hard drive. i thought maybe to save a few bucks i could turn it into a usb external hard drive. i found an enclosure for the hard drive and a usb 2.0 cable and plugged it into my ibook. it was recognized and everything. i put some files on the external hard drive and transferred it to another mac. this is where the trouble started. i plugged the hard drive into a PowerMac G4, and it was not recognized... so i tried it on a different mac. this time on a PowerBook G4, but no luck. this issue has been troubling me for a few weeks. but then i tried it on a similar iBook G4... and it was recognized. but i don't know why it was only recognized only on the iBook G4 (not the same iBook G4 it was pulled out of) and no other macs.
does anybody have any ideas what we can do to get this hard drive to be recognized by other macs?
any of even the smallest ideas would be greatly appreciated.
thanks,
tyler
iBook G4 Mac OS X (10.4.3)

I can walk you through formatting the hard drive:
1. Hook it up to an iBook that recognizes it.
2. Go into your Applications folder, then scroll down to Utilities. Open Utilities and scroll down a bit and you should see Disk Utility. Double-click.
3. On the left side you should see your internal hard drive and your external one. Each hard drive will have a sub-catagory with the partition indented.
4. Your external hard drive will probably be the second catagory. Click it.
5. In the center-top you should see the tabs First Aid, Erase, Partition, RAID, and Restore. Click the Erase tab.
6. You should see Volume Format: and then a drop down menu, and Name: and a text box. Type in the name you want the external hard drive to be named.
7. In the drop down menu, select Mac OS Extended (Journaled).
8. Then, simply click Erase, watch the progress and it should be good to go!!
Hope I helped you out. Oh, and it might be the enclosure...and also what OS's? Since it's USB it is probably using a USB Mass Storage driver. Mac-wise, if formatting doesn't help, I would get a FireWire enclosure because FireWire is much faster than just USB 2.0. Oh, thats nother thing...Is the enclosure Hi-Speed USB? If it isn't, I would definitely get a FireWire one...If it is, the PowerMac G4 doesn't have Hi-Speed so you're not taking full advantage..Just some insight
iBook G4 Mac OS X (10.4.3) 512 MB Ram, CD-RW Combo Drive, 40 Gig HD, bought in October of 2005...
Message was edited by: Hilary_Rose

External Firewire drive not Mounting/Appearing!

I have a White macbook core duo and when I plug in the External Firewire Drive it doesn't appear anymore! The Drive draws power from the computer still yet the computer cannot detect the drive. I addition the when i ran Disk Utility the program did not load completely till i removed the firewire drive. I have a SmartDisk "FireLite" FireWire Drive (40gb.) Help PLEASE!!!!
Message was edited by: slverice

I had this problem too with my G5 (PPC) and brand new Mac Book.
Both of my computers were given the same local subnet address. To change this go to System Preferences > Sharing > Computer Name, you'll see an "Edit" button, click on it and change the name or add a "2" to the end of the name before ".local"
I guess what is happening is both computers are using the same local subnet and your macbook isn't being recognized.
Mine works fine now, hope this has helped you!
Jay

External DVD drive not recognized with Leopard install

I just installed Leopard and my external firewire DVD drive (LG; GSA-5120D) is not recognized.
I used patchburn for Tiger to recognize it but there is not Leopard version. any ideas? thx

answered!
I used Patchburn with Tiger. After I removed the Patchburn generated drivers from Library/DiscRecording/DeviceProfiles and restarted, it now works fine.

Some data DVD's and External Hard Drives not recognized by Leopard only.

1] Some data DVDs that were burned under Tiger do not show up in Leopard. Only a dialog box asking what I want to do with the blank DVD comes up when I insert the disk. On my Tiger computer, the disk shows up perfectly fine. It is a DVD+R being used on a MBP 2ghz... and was burned on that very machine in Tiger and would load fine in Tiger. Now nothing on the same computer in Leopard. I'm going to reburn the disk on my Mac Mini on a DVD-R, but still wanted to know any ideas or input as to why it won't recognize the disk.
2] I also have an external USB2.0 HD. I formatted the disk using my G4 Mac Mini (which has Tiger) and it is not recognized on my MBP. In Disk Utility I try to reformat the drive, but it says that it cannot do so because the "resource is busy". I plug the drive back into the mac mini and it works perfectly fine. Why would this be and how do I correct it?
Full updates on both OS's. No other problems with either computer that I know of.

Unfortunately, commercial DVDs that you have bought 99.9% of the time will be copy protected and Apple's forum terms prohibit discussion of circumventing the copy protection. In various places circumventing digital copy protection is potentially illegal even if you own and intend to keep the DVD. Hence Apple do not wish DVD rippers etc discussed here.
Another problem is that AppleTv cannot play back DVDs copied to an external drive as it does not understand the format. So even if you can 'copy' your DVDs you then need to convert to h264 format to play on AppleTV.
Video formats for AppleTv are limited. They also do not support DVD like menu structures (thogh AppleTV 1 did with itunes Extras movies).
If you have unprotected video you wish to convert eg home video on DVD, then something like Handbrake or MPEGStreamclip with Apple's MPEG2 component might do the job. These programs are not DVD rippers but can process unprotected MPEG2 video.
AC

External USB drive not recognized.

I have two LaCie external drive which work fine, but all my other external drive aren't recognized.
I know this was happening with 10.4.10, any way to fix this with Leopard?

Me too:
USB4500 FW1.04:
Version: 0.01
Bus Power (mA): 500
Speed: Up to 480 Mb/sec
Manufacturer: DATAST0R Technology Corp
Product ID: 0x4500
Serial Number: 1966051022645658
Vendor ID: 0xed06
System profiler sees it, Virtual PC sees it in the USB settings, but it does not work in Windows on VPC.
USB prober sees it:
High Speed device @ 5 (0x5B300000): ...... Composite device: "USB4500 FW1.04"
Device Descriptor
Descriptor Version Number: 0x0200
Device Class: 0 (Composite)
Device Subclass: 0
Device Protocol: 0
Device MaxPacketSize: 64
Device VendorID/ProductID: 0xED06/0x4500 (unknown vendor)
Device Version Number: 0x0001
Number of Configurations: 1
Manufacturer String: 16 "DATAST0R Technology Corp"
Product String: 32 "USB4500 FW1.04"
Serial Number String: 48 "1966051022645658"
Configuration Descriptor: ................................."1966051022645658"
Length (and contents): 32
Number of Interfaces: 1
Configuration Value: 1
Attributes: 0xC0 (self-powered)
MaxPower: 98 ma
Interface #0 - Mass Storage/SCSI
Device Qualifier Descriptor
Descriptor Version Number: 0x0200
Device Class 0 (Composite)
Device Subclass 0
Device Protocol 0
Device MaxPacketSize: 64
Number of Configurations: 1
bReserved: 0
Other Speed Configuration Descriptor: ....................."1966051022645658"
Length (and contents): 32
Number of Interfaces: 1
Configuration Value: 1
Attributes: 0xC0 (self-powered)
MaxPower: 98 ma
Interface #0 - Mass Storage/SCSI
... but USB Prober gets this same error over and over:
314.289 [1] AppleUSBEHCI[0x1f05800]::Found a transaction past the completion deadline on bus 0x5b, timing out! (Addr: 5, EP: 2)
314.289 [1] AppleUSBEHCI[0x1f05800]::Found a transaction past the completion deadline on bus 0x5b, timing out! (Addr: 5, EP: 2)
Worked like a charm on 10.4.10 before the upgrade ... ... and it still works great if I plug it to my Windows workstation ...

External hard drive not recognized, or recognized as RAW

I have the Pavillon desktop running Windows 7 and have been having trouble with my computer either not recognizing Seagate 2 TB external drive, or if recognized, it is listed as Raw. I have:
1. Connected the drive to my laptop - it worked fine;
2. Changed the USB port on my desktop, over and over, same problem;
3. Reformatted the drive, same problem;
4. hooked it up to a different outlet, same problem;
5. Run the delivered HP hardware diagnostic tools, no errors noted, but same drive problem persists;
6. Updated drivers, over and over.
Is there ANYTHING else I can try?

Hi,
Please post the HP product number for your PC. How to Find the HP Model Number and the HP Product Number or let HP automatically find your PC model number and HP network attached printers. This will allow others to review your issue, make suggestions and review your responses. This is usually the best way to get assistance.
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
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[solved] External Hard Drive Not Recognized

I bought a SATA-to-USB 2.0 external HDD enclosure today (found here), and plugged in a 320gb WD Scorpio Blue. When I first plugged it into my laptop, with Crunchbang Stalter on it, it worked perfectly. I partitioned it and everything. However, I then plugged it into my desktop with Arch on it, kernel version 3.4.4.2, and it was not recognized. lsusb returns nothing related to it, fdisk -l does nothing, and dmesg only displays "fuse init (API version 7.18)". I have tried multiple file systems, set up on my laptop, including ext4, fat32 and ntfs, with absolutely no luck. I would greatly appreciate any help.
Last edited by mjdudak (2012-07-11 15:56:32)

I was actually having the same problem with a USB to SATA adapter that only occured on my arch box. When the device was plugged in it showed the event in dmesg and then it got registered as /dev/sde. If I tried to use the mount command though it gave me some error like "could not read from inode" or something like that. After upgrading to kernel 3.4.4-4 the problem seems to have corrected its self now. Are you using systemd or udev?
Last edited by mynis01 (2012-07-10 09:01:38)

External hard disc not recognized

I have been using a WD external hard disc with Time Machine. Today I had it plugged into a USB powered hub when the house electrical power briefly went off then on, twice. A message appeared stating that device was removed incorrectly (or words to that effect). Now the HD does not appear on the desktop. It is recognized in "about this computer" as a USB device. It is not recognized in disc utility and thus can not be mounted.
All suggestions appreciated.

Answered my own question. Working now. Connected directly to computer USB and ignored it for a couple of hours and now it is visible on the desktop and appears to be working.

Toshiba External Hard Drive not recognized by computer. Please help!

I was wondering if anyone could help me. I have an external hard drive and it will not show up in "My computer" when I plug it in. I have tried other USB drives and other computers. I am starting to think it is a hardware issue but I don't want to lose hope. The blue light is coming on when you plug it in but it doesn't blink and there is no noise whatsoever. Is there anything I can do to fix this issue so that I can recover the information on it? Thanks in advance for any help. It is greatly appreciated.
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Same problem: I can't see my Toshiba PH3100U-EXB (Gen 2) external hard drive when I plug it in. After awhile I get this error message (see attachment): USB Device Not Recognized. One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it. FOr assistance in solving this problem, click this message."
When I click it, I get a list of USB ports and devices, with Unknown Device in bold face. No real information there.
Yes, I ran Disk Management and the Toshiba did not show up when I plugged it in and hit Refresh.
Does it make a difference that the last time I used the external hard drive, we were in Windows XP and now we're in Windows 7?
Please help! It's not just the backing up I'm worried about...it's being able to retrieve files later!
Thanks!
Attachments:
USB-NotRecognized.jpg ‏28 KB

HP Simple Save external hard drive not recognized on laptop.

I have tried plugging it into different USB ports on same laptop or a completely different desktop. It is never recognized. last week it was. I took it apart & tried it in a 3.5 SATA external closure. Still is not recognized. I have info on it that i desperately need. Is there any way for me to get my files off of it?

cadee
Welcome to the HP Community Forum.
I hate to be the bearer of bad news; this vintage drive might have died.
If you are lucky, it is only the power supply, although this is a thin hope and is not based at all on the facts.
Depending on your level of desperation, you might consider taking the drive to a forensic specialist.
My own Simple Save drive died suddenly one day about five months ago after several years of good service. Fortunately, I never depend on only one device for backups, else they are not backups, but instead become single points of certain failure.
I hope you find a viable solution.
We have other posts here on the forum on the subject; you might do a search and see what others have said.
I grieve for your loss.
Click the Kudos Thumbs-Up to say Thank You!
And...Click Accept as Solution when my Answer provides a Fix or Workaround!
I am pleased to provide assistance on behalf of HP. I do not work for HP.
Kind Regards,
Dragon-Fur

External hard drive not recognized on new macbook

we have an external harddrive that we used as the time machine for our previous imac. we just bought a macbook pro, and the harddrive is not recognized and does not show up on the sidebar. it is however shows up on disk utility but i dont know what to do with it/how to get files from my old time machine. please help! thanks

The hard drive will not show up on the sidebar or desktop unless Finder preferences are set to do that:
In Finder's General preference section, make sure "External disks" is checked in the list of things to show on the desktop if you want to see them there.
Likewise, in Finder's Sidebar preference section, make sure "External disks" is checked in the "DEVICES" section to see them automatically appear on the sidebar.
But you don't need to do either for the MBP to recognize the drive, or to get files from its Time Machine backup set. To do that, you should use the Time Machine "Star Wars" interface. Pondini's FAQ's (already mentioned) tell you how to do that. Tip 17 is particularly relevant.

External Firewire HD not recognized by MacPro

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