USB 3.0 External Drive disappears

Hello All,
I am noticing an intriguing problem with my RMBP and FCP X 10.0.5. I have many USB Hard disks plugged to my computer (6 to be precise). Only one of those is a USB 3.0 (WD 1TB). When I open FCP X it shows in my event library for 2 seconds than disappear. I was planning on using this hard disk to be exactly the one holding my Final Cut Event since it's the only USB 3.0 that I have. I've read around saying that USB would not show up but all the other 5 drivers are being currently shown in my FCP X. All but my USB 3.0. It is formated to Mac OS Extended (Journaled) so that's not the issue. Any ideas to help me out? Thanks for any feedback!
Erick Pessôa

What Tom is suggesting is that there is some folder at the top level of the drive that fools FCP X into treating this as a camera drive. You can easily check if that is the case by trying File->Import from Camera. If your drive appears, there you have it. Then it is a matter of figuring out what the offending folder name is (in addition to the ones Tom suggested, it can be DCIM, Movies, AVCHD or other names).
Here is a similar thread: https://discussions.apple.com/thread/4116309?start=0&tstart=0

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I received an answer from Thermaltake technical support. I asked if perhaps there was a firmware upgrade to prevent their drive from disappearing. They wrote on 22/04/2013:
Thank you for contacting Thermaltake Customer Service.
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I wrote back saying I have never had to do that with other USB devices. And I routinely allow my system to Sleep. Is that an issue with their drive housings? They replied on 23/04/2013:
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Armando,
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bd

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Try restarting your Macbook then plug the USB External Drive again and see if that works.
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Dear Apple Support Team & Folks in Apple Community,
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I would be interested to know which consumer grade non-raid external harddisk that could reach 6xx mb/sec.
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Hello
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Thanks for the fast reply !
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Leopard - External drive disappeared!

Hi, I'm really puzzled here. After 5 days of normal use, the external drive where I do my back ups with Time Machine simply disappeared! It's non to be found!
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Me too! I have a 500GB WD My Book 'Studio Edition'. It is formatted using HFS+ (Journaled). Upon initial hook-up, it showed on my desktop and prompted user action for enabling Time Machine. A few days after, the 'My Book' icon that shows on the desktop after mount does not exist. I've looked at 'Finder Preferences' and all are check marked. at I tried Disk Utility, and it shows 'My Book' as mounted properly. I tried verifying then repairing the HD, and Disk Utility shows my HD as functioning properly. I even went into Script Editor and keyed in some prompts to enable my desktop icons to 'true'. I then disconnected my firewire 800 cable from my iMac as well as the other perepheral's. I then unplugged the HD and the iMac. I let sit overnight to reboot the firewire ports. I then plugged everything back in and the icon still, refused to show in the desktop. I called Apple to report the issue as I feel it's a bug within Time Machine. At the time of my call, they wanted me to speak with their 'Chronic Specialists' (or something of the sort) but they were closed for the night. I plan on calling asap in the AM to report the issue. Time Machine has a minor flaw I'm afraid.
In the meantime, create an alias for your external HD as it will be an easy way to access your drive until the issue is resolved.
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PS- Some might still be able to access files from the missing external hd. If you can recall a folder title within the hd, finder will retrieve it.
Message was edited by: Anjunafreak

Is There a Special USB Flashdrive (or External Drive) or SD Card That Is Seen As An Internal Drive by Windows 7 or 8?

Hi. Is there a USB flashdrive (or Firewire, Thunderbolt flashdrive or external drive) or SD card that the Windows 7 or Windows 8 64-bit so you could boot into windows without having to partition your Mac's drive?
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Have a great upcoming sunday mass/great week.
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no windows block that
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If you daisy chained then try without. May not be enough power to handle both at sme time. Other than that read some info:
1. Shut-down your Mac, and unplug the power cord
2. Turn the power off on your external FireWire devices
3. Unplug the FireWire devices from the Mac
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5. Plug the power cord to your Mac only
6. For PPC Macs: Restart the Mac while holding the Option-Apple-O-F, and keep holding until you get the ">" prompt, then release the keys
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8. Shut down your Mac
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When the FW port doesn't respond anymore :
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http://www.hardmac.com/articles/16/
From Kappy post:
922 is only used in dual drive cases to provide a "build-in firmware RAID support"
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From Wiebetech:
I just upgraded my Mac OS, and now I'm having trouble with my FireWire device. What can I do?
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When the Mac has restarted and is running on the internal boot drive, reconnect the external drive.

Will iMac (wired) USB keyboard connect external drive?

I have a recent iMac with the wired USB 2.0 keyboard.
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USB drives which don't have their own power supply usually won't work if plugged into a keyboard.
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SOLUTION - USB 3.0 External Drives Not Mounting on MBP Retinas - SOLUTION

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Roderick A. Santiano wrote:
So I have been having the same problem as everyone else who has issues with USB 3 external hard drives not mounting on their MBP Retinas. My friend told me to try unplugging the USB cord and plugging it back in instantly (like in half a second, so as to not let the power turn off on the drive)...
Did you unplug the USB cable from the computer or from the external drive? This fix has been posted here previously but it was reported that the cable had to be unplugged from the device, not the computer. If the cable was unplugged from the computer instead, the fix didn't work.

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HI
You should check in System Profiler, under the USB section to see if the drive appears there (Apple -> About This Mac -> More Info -> USB)
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Is there a cable with FW800 and USB 3 connectors? If so, will an iMac (late 2009) Duo Intel talk to drive with drivers from LaCie?
Thanks.

Item Number :
130976
Capacity :
Interface :
Two USB 3.0 ports
Transfer rate :
USB 3.0: Up to 5Gb/s; USB 2.0 : Up to 480 Mb/s.
System Requirements :
Latest version of Windows® XP, Windows Vista®, Windows 7, Windows Server 2008 /Mac OS X 10.5, 10.6 and 10.7
For USB 3.0 Mac compatibility:
Check www.lacie.com/usb3mac for adapter compatibility and the USB 3.0 Mac driver
Computer with a ExpressCard/34 Slot
Dimensions :
34 x 115 x 21mm / 1.33 x 4.53 x .83 in.
Weight :
35 g / 1.23oz
Box Content :
LaCie USB 3.0 ExpressCard/34
Quick Install Guide
Drivers on CD-ROM
Warranty :
1-Year Limited Warranty

External drive disappears when I start mpd

I have my music all stored on an external drive, formatted exfat. Mounting the external drive works just fine - I can cd around, cat out files, whatever. When I start mpd, however, any filesystem operations on the drive give out "Transport endpoint is not connected" errors. The strange thing is, there's no output from dmesg like I would expect if it was a faulty drive enclosure, and it's consistent based on which ports I plug it into.

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USB 3.0 External Drive disappears

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