6 Replies Latest reply: Sep 27, 2010 9:15 AM by Lawrence Smith
Lucas Metcalf Tobin Level 1 Level 1 (15 points)
I have a 2 TB external USB drive (OWC Mercury Elite AL Pro/Hitachi) connected to my iMac that is spontaneously ejecting. It worked pretty much fine for a long time, and the only big change is upgrading to Snow Leopard. It seems to happen when I am trying to back up, either with Time Machine or with Backup. When I try a drag and drop back up of iPhoto Library, I get an error 36 message, and the drive ejects. IPhoto is only up to date backed up in Time Machine on a partition on the same drive (bought another drive and will put TM and another backup on that one from now on!), so I want to avoid formatting if possible (and don't know if it is a drive problem anyway). Really would like to make sure I have a good backup before I do anything! Tried fixing iPhoto permissions by rebuilding, but don't know if it worked. Read about using iPhoto Library Manager to rebuild, but haven't tried that yet. Techtool is giving me a fail message for video ram, too.

If anyone has any thoughts I would appreciate it!

Imac intel core duo 2.0 Ghz, 2 GB ram, OS 10.6.2, Mac OS X (10.6.2)
  • 1. Re: External USB hard drive spontaneously ejects.
    Kenichi Watanabe Level 7 Level 7 (30,030 points)
    We tend to keep Macs running a long time between restarts and shutdowns. Since noticing this problem, have you shut down (powered off) the iMac?

    What other USB devices do you have connected? Have you tried it with all other USB devices (except keyboard/mouse) disconnected?

    Is that external drive connected to a power strip (surge suppressor)? If so, how many other devices are on the same power strip? If there are a lot (including your iMac), you may want to split the connections to two (or more) power strips connected to separate wall outlets. If the power strip is getting old, you should replace it with a new one.

    If the drive has an external power supply, make sure the connection to the brick is fully connected. I had a situation where the connection had come partially loose, and the drive was not working reliably because of it.
  • 2. Re: External USB hard drive spontaneously ejects.
    Matt Watkins Level 1 Level 1 (0 points)
    This sounds very much like the problem I am experiencing. I have a Core i5 27" iMac which was purchased back in December. External USB storage devices (including an iPod shuffle) spontaneously disconnect without warning. Time machine backups will fail while they are in progress at different points in time. iTunes sync operations with my iPod shuffle will sometimes be interrupted. I have no USB hubs connected to my machine. Nor any other devices. The cabling is very good quality and free from sources of noise. The same external drive and cable worked fine with my Mac Pro. I'm running a 64 bit kernel, but I've seen the same problem booted in the 32 bit kernel.

    Console log messages below.

    - Matt

    11/02/2010 20:22:26 kernel USBF: 8830.762 AppleUSBEHCI[0xffffff80133cd000]::Found a transaction past the completion deadline on bus 0xfd, timing out! (Addr: 5, EP: 2)
    11/02/2010 20:22:57 kernel USBF: 8861.763 AppleUSBEHCI[0xffffff80133cd000]::Found a transaction past the completion deadline gress/A6A62EDF-EB6B-4BB5-AD27-14CE0D6548F8/Mac OS X/Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas/04 Days Go By.m4a] [FSLogMsgID 757946221] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: device/channel is not attached.
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    11/02/2010 20:22:57 kernel disk2s2: device/channel is nojnl: dt aiskttac2hesd.
    11/02/2010 20:22:57 kernel 2: dojnlio: strategy err 0x6
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    11/02/2010 20:22:57 kernel jnl: disk2s2: writejournalheade 0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/Backups.backupdb/iMac/2010-02-11-195924.inProgress/A6A62EDF-EB6 B-4BB5-AD27-14CE0D6548F8/Mac OS X/Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas/04 Days Go By.m4a] [FSLogMsgID 1497429377] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel r: error writing the journal header!
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    11/02/2010 20:22:57 kernel jnl: disk2s2: dojnlio: strategy err 0x6
    11/02/2010 20:22:57 kernel jnl: disk2s2: end_transaction: only wrote 0 of 119296 bytes to the journal!
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 com.apple.backupd[727] Error: (-36) SrcErr:NO Copying /Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas/04 Days Go By.m4a to /Volumes/Backup/Backups.backupdb/iMac/2010-02-11-195924.inProgress/A6A62EDF-EB6 B-4BB5-AD27-14CE0D6548F8/Mac OS X/Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas
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    11/02/2010 20:22:57 kernel system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexArrays] [FSLogMsgID 1929688452] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-rrNo 6] [IOType Write] [PBlkNum 33901896] [LBlkNum 2916] [FSLogMsgID 1286214201] [FSLogMsgOrder First]
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    11/02/2010 20:22:57 kernel e.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexArrays] [FSLogMsgID 1755638369] [FSLogMsgOrder Last]
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    11/02/2010 20:22:57 kernel pple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexArrays] [FSLogMsgID 1806693641] [FSLogMsgOrder Last]
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    11/02/2010 20:22:57 kernel disk2seadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A725128] [LBlkNum 4172] [FSLogMsgID 647487531] [FSLogMsgOrder First]
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    11/02/2010 20:22:57 kernel 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69lkNum 36144768] [LBlkNum 6383] [FSLogMsgID 901682743] [FSLogMsgOrder First]
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    11/02/2010 20:22:57 kernel 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexArrays] [FSLogMsgID 19sgOrder First]
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    11/02/2010 20:22:57 kernel ] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexArrays] [FSLogMsgID 372494250] [FSLogMsgOrder Last]
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    11/02/2010 20:22:57 kernel disk2s2: media is not presentcom.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-8856] [LBlkNum 11894] [FSLogMsgID 457294453] [FSLogMsgOrder First]
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    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel 4104FCC-69A1-47A2-884C-897B7D61BC1B/live.0.indexPositionTable] [FSLogMsgID 1671008095] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel ID 1256802466] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel .indexPositionTable] [FSLogMsgID 1143082955] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel sgID 253091129] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel sgID 95968371] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2ID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /VolumesID 0] [Facility com.apple.system.fs] [ErrType IO] [ErrNo 6] [IOType Write] [PBlkNum 33925280] [LBlkNum 1134] [FSLogMsgID 2047466993] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel Ids] [FSLogMsgID [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel 17] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel ility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexTermIds] [FSLogMsgID 1120594178] gOrder First]
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indeLogMsgID 1462662926] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel Ids] [FSLogMsgID 1253852141] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexTermIds] [FSLogMsgID 30] [FSLogMsgOrder First]
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel adUID 0] [Facility com.apple.system.fs] [DevNode /dev/disk2s2] [MountPt /Volumes/Backup] [Path /Volumes/Backup/.Spotlight-V100/Store-V1/Stores/44104FCC-69A1-47A2-884C-897B7D6 1BC1B/live.0.indexTermIds] [FSLogMsgID 1446376793] [FSLogMsgOrder Last]
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
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    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel disk2s2: media is not present.
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel
    11/02/2010 20:22:57 kernel jnl: disk2s2: close: journal 0xffffff8013500d20, is invalid. aborting outstanding transactions
    11/02/2010 20:22:57 com.apple.backupd[727] Stopping backupd because the backup volume was ejected!
    11/02/2010 20:22:57 com.apple.backupd[727] Stopping backup.
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Error: (-8062) SrcErr:NO Copying /Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas/04 Days Go By.m4a to /Volumes/Backup/Backups.backupdb/iMac/2010-02-11-195924.inProgress/A6A62EDF-EB6 B-4BB5-AD27-14CE0D6548F8/Mac OS X/Users/ann/Music/iTunes/iTunes Music/Dirty Vegas/Dirty Vegas
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Copied 145456 files (14.9 GB) from volume Mac OS X.
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Copy stage failed with error:11
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:57 com.apple.backupd[727] Error writing to backup log. NSFileHandleOperationException:* -[NSConcreteFileHandle writeData:]: Input/output error
    11/02/2010 20:22:58 com.apple.backupd[727] Backup failed with error: 27
    11/02/2010 20:23:01 kernel USBF: 8865.598 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:01 kernel USBF: 8866.415 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:06 kernel USBF: 8871.311 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:07 kernel USBF: 8872.143 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:13 kernel USBF: 8878.239 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:14 kernel USBF: 8879. 87 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:21 kernel USBF: 8886.383 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:22 kernel USBF: 8887.214 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:31 kernel USBF: 8895.711 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:32 kernel USBF: 8896.559 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:41 kernel USBF: 8906.255 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:42 kernel USBF: 8907. 87 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:23:53 kernel USBF: 8917.983 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:23:54 kernel USBF: 8918.830 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:24:06 kernel USBF: 8930.927 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:24:07 kernel USBF: 8931.759 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:24:20 kernel USBF: 8945. 55 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:24:21 kernel USBF: 8945.903 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:24:35 kernel USBF: 8960.399 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:24:36 kernel USBF: 8961.230 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:24:52 kernel USBF: 8976.927 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:24:53 kernel USBF: 8977.774 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:25:10 kernel USBF: 8994.671 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:25:11 kernel USBF: 8995.502 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:25:29 kernel USBF: 9013.599 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:25:29 kernel USBF: 9014.447 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:25:49 kernel USBF: 9033.744 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:25:50 kernel USBF: 9034.575 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:26:10 kernel USBF: 9055. 72 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:26:11 kernel USBF: 9055.920 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:26:33 kernel USBF: 9077.617 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:26:33 kernel USBF: 9078.449 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:26:56 kernel USBF: 9101.345 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:26:57 kernel USBF: 9102.192 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:27:21 kernel USBF: 9126.288 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:27:22 kernel USBF: 9127.120 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
    11/02/2010 20:27:47 kernel USBF: 9152.417 [0xffffff80135b6c00] The IOUSBFamily was not able to enumerate a device.
    11/02/2010 20:27:48 kernel USBF: 9153.265 [0xffffff80135b6c00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfd100000)
  • 3. Re: External USB hard drive spontaneously ejects.
    Rob-K Level 2 Level 2 (170 points)
    I'm having the same spontaneous eject problem on two different drives. Most of the time they seem to work fine, but large read or write operations suddenly fail because the drive was momentarily ejected.

    Both drives work fine with the same cables with my old G4. Seems the problem is with my 20" 2.66 iMac.

    One drive is an off-brand purchased at BestBuy, while the other is an OWC drive and should be 100% Mac savvy.

    The BestBuy drive is FW 400 & 800 & USB 2. Same behavior on any of those connections.


    Sure hope the pending 10.6.3 update does the trick!!!
  • 4. Re: External USB hard drive spontaneously ejects.
    Matt Watkins Level 1 Level 1 (0 points)
    Could this problem be related to *VMware Fusion*?

    Come on Apple, sort it out - this problem is serious!

    - Matt
  • 5. Re: External USB hard drive spontaneously ejects.
    Will N too! Level 1 Level 1 (0 points)
    MacBook Pro 15" 2.33 Ghz Intel Core Duo Snow Leopard 10.6.4
    Three external drives connected
    FW 800 cables
    1 TB LaCie
    1 TB G-Tech
    Finally 500 GB La Cie portable drive (no separate power source)
    The 1 TB Lacie keeps cycling connect-disconnect with the warning about discounting.
    Very annoying. This has been going on for about 5 days
    Intermittent problem. After several annoying cycles, it's now stable
  • 6. Re: External USB hard drive spontaneously ejects.
    Lawrence Smith Level 1 Level 1 (5 points)
    I have a 1.5Tb Seagate HDD used as a Time Machine backup disc and have just noticed it quits every time I open VMware Fusion 2.06 and restarts when I suspend it. Has anyone any ideas?