ExFAT external usb disk not working in Lion?

Hi, I used to be able to read/write to an external usb disk, exFAT formatted, using Snow Leopard.
Since upgrading to Lion I can't seem to be able to find the disk anymore on the desktop/finder. When I go into Disk Utility it sees it but thats pretty much all it will do. Anyone knows of this issue or how to fix it?
Thanks
Richard

I am encountering a similar issue where I can read but not write to an exFAT volume (connected over FireWire 800) in the Finder. While I don't know of a fix, opening a Terminal and using CP to move files seems to work.

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You need to get some software that allows your Mac to read and write to the NTFS disk. There's a whole bunch of stuff out there, but this program has a good review, and you can try it for free. I would move everything off of your external drive, reformat it into Mac OSX extended, and use it for your Mac. You don't need NTFS anymore, unless you still have a Windows computer that needs it.

When is Apple going to fix the problem with external hard drive not working on Lion?

As for everyone else external hard drive does not work with Lion.
When will Apple fix this problem. Do they just ignore the customer : (

Copy off all your data off the NTFS formatted drive to another drive
Open Disk Utility in the Applications>Utilities folder
Select your external NTFS drive on the far left, should have the drive makers name, a ID perhaps plus the word "media"
Click the Partition Tab, click the big box and click 1 Partition
If you want a Mac only drive > Option: GUID >format OS X Extended (Journaled)
If you want a Mac/PC drive (for over 4GB sized files) > Option: MBR > format exFAT
If you want a Mac/PC drive (for the most compatibility with other devices, Win XP, but only under 4GB sized files) > Option: MBR > format MSDOS (FAT or FAT32)
Give it a name and click Apply.
You can also search Microsoft for a free exFAT download if you have Win XP.
https://discussions.apple.com/message/16276201#16276201

Time Machine times-out on external USB disk, but works on 2 others

Hello,
I wanted to share my experience, in case it is helpful to someone else. It appears that one of my external hard disks has a hardware fault, or that TM is overly sensitive to its state, thus preventing me using it for backup.
After upgrading from Tiger to Leopard on my Macbook Pro 2.16GHz, I had been trying over the last couple of days, without success, to backup using Time Machine to an external USB hard disk at work. It is a Maxtor disk in a BlueEye U235 case. On each attempt to make the initial backup, TM would copy between 2 and 25GB of data (of 75 total) to the disk, and then stall indefinately, without giving an error. (Ejecting the disk at this point and restarting the computer just lead to further problems with completing the backup that I won't go into here). I tried many times, each time reformatting the disk (with the GUID partition map), deleting the TM preference file, restarting and ensuring all other apps were not running. I was completely fed-up!
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Yes, I think you have a good point. The motivation for my post was just to make people aware - as there seems to be many people having problems with TM - that maybe the first drive you try, particularly if it is not new, may not work and that it is worth trying another if you can. Particularly in light of the fact that I didn't receive any explicit error messages, that is other than the one in the system.log file.
The USB disk was powered separately and was plugged directly into one of my USB ports (not via a hub). At the same time a USB mouse was plugged in. I think it is USB 2, but I'm not sure, and as it is not working now, I don't know how to check.
The rate at which data is copied to the two drives that work (via Firewire 400) seemed to be quite similar to the rate for the USB drive, until it bombed out.

External hard disk not working

Hi, i have a hard disk that is connected via usb. It worked recently and still does on a PC but not accessible or even showing in iMac. Anybody know what i have to do to get it working again?

How is the disk formatted and has it ever worked on your iMac? I suspect it's formatted for the PC as NTFS which OS X will read but not write to. If you must share this disk with both your PC and Mac then you should first determine how it's formatted and if it can be shared. In the event it's formatted as most external HD's for NTFS then I'd recommend downloading and installing NTFS-3G will allow the Mac to write to it. You can find this at:
http://www.macupdate.com/app/mac/24481/ntfs-3g
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SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
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There's no problem with the drive.
Maybe true, and the drive would probably work fine with Leopard. One thing that's obvious is that Apple did make changes in the way that FireWire works in Snow Leopard. Many drives and drive manufacturers work well with SL, but there have also been reports of firmware issues by Western Digital and other companies.
Have you checked with your vendor to see if they are offering a firmware update for your drive?
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Are you sure this is not software related .
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https://iomega-eu-en.custhelp.com/cgi-bin/iomega_eu_en.cfg/php/enduser/std_adp.php?p_faqid=16552&p_sid=7UzKoC4i&p_lva=&p_sp=cF9zcmNoPSZwX3NvcnRfYnk9JnBfZ3JpZHNvcnQ9JnBfcm93X2NudD0xOTgmcF9wcm9kX2x2bDE9MyZwX3Byb2RfbHZsMj0zNSZwX2NhdF9sdmwxPTUwJnBfcGFnZT0x&p_li=

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When I try to do a phone call with face time through my iphone 6 face time is not recognizing my external usb microphone connected to my mac mini. I have just updated my mac mini to os x Yosemite. If I go to the audio system preferences and look to the audio input signal I can see that the external microphone (SB Omni Surround 5.1) is working (audio input level is showing an input signal).
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Interesting. I don't have a USB mic on the Mac Pro. Its the OLD FireWire 300 iSight. It works for FaceTime calls but not the iPhone call via the FaceTime app.
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All that I can provide is what has worked for me for years.
The Time Capsule is setup as the router for the network, connected to a simple Zoom 5431J cable modem.
Static Internet IP connection from the cable provider is 12.34.567.89
By default, the Time Capsule is at 10.0.1.1 on the local network
Port Mapping setup for the Time Capsule is......
Public UDP Port 8884
Public TCP Ports 8884
Private IP 10.0.1.1
Private UDP 548
Private TCP 548
The hard drive on the Time Capsule is accessed from a remote location at afp://12.34.567.89:8884
The AirPort Extreme is connected by Ethernet to the Time Capsule and is it setup to operate in Bridge Mode
The AirPort Extreme always receives a reserved local IP address of 10.0.1.2 from the Time Capsule
The Port Mapping setup (on the Time Capsule) looks like this for the AirPort Extreme.......
Public UDP Port 8888
Public TCP Port 8888
Private IP 10.0.1.2
Private UDP 548
Private TCP 548
The USB hard drive connected to the AirPort Extreme is accessed from a remote location at afp://12.34.567.89:8888
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Hi
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Hi,
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ExFAT external usb disk not working in Lion?

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