3 different external hard drives keep disconnecting every day -HELP

I have 3 external hard drives on my 2.7GHz Core i5 iMac. It's got 16 gigs of memory. One external drive is in a basic external case and 2 are exposed on my desk using an Adapter Converter Cable. I've never had this kind of problem with these hookups in the past. And it's completely random. They work for a day or 2 at most and then suddenly when I wake the machine 1-2 or all 3 have dropped out and I have to unplug and restart the drive. The internal drive has never done this - it has 2 partitions. It rarely happens WHEN I'm actually using the machine and it's never happened when the computer was reading or writing to the drive and caused any corruption that I know of.
It started when I first hooked them up right after I got the iMac and has been the same every day since. I can't remember if it happened with SnowLeopard or if it started when I installed Lion a day or two after I got the machine. I have not tried booting into Leopard to test that.
2 of the drives came from my old G5 and one is new - all Seagate
1T
1.5T
and 2T
Thank you for any help with this,
Jay

Jay,
No where did you mention how the EHD's are connected. Is it USB, Firewire, FW800 and if so are they connected directly to the back of the computer or via a hub. If they're USB are they bus powered or powered with external power? You need to be specific so we can begin helping.
If they're USB drives with external power and are connected directly to the back of the computer then try doing a SMC reset 2-3X.
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.

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My iphone external hard drive keeps disconnecting so it tells me I disconnected improperly. I have changed electric cord directly to outlet and usb also direct, and it still happens.

I store ALL my photos (400 events) on an external 1T hard drive. The hard drive keeps disconnecting so it get a msg telling me I disconnected improperly basically which is a serious no no. I then have to re-start. I have tried connecting directly to the wall outlet, to a super duper surge protector and also have connected the usb (was on a usb port) directly to the computer. But it continues to happen a total nusance. What do I do?

I would first contact Seagate's tech support for a possible solution. If that doesn't prove successful then I would try a different product or consider building your own.
Basic Backup
Get an external drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
Carbon Copy Cloner
Data Backup
Deja Vu
Silver Keeper
Retrospect
Super Flexible File Synchronizer
SuperDuper!
Synchronize Pro! X
Synk Pro
Synk Standard
Tri-Backup
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.
Although you can buy a complete external drive system, you can also put one together if you are so inclined. It's relatively easy and only requires a Phillips head screwdriver (typically.) You can purchase hard drives separately. This gives you an opportunity to shop for the best prices on a hard drive of your choice. Reliable brands include Seagate, Hitachi, Western Digital, Toshiba, and Fujitsu. You can find reviews and benchmarks on many drives at Storage Review.
Enclosures for FireWire and USB are readily available. You can find only FireWire enclosures, only USB enclosures, and enclosures that feature multiple ports. I would stress getting enclosures that use the Oxford chipsets especially for Firewire drives (911, 921, 922, for example.) You can find enclosures at places such as;
Cool Drives
OWC
WiebeTech
Firewire Direct
California Drives
NewEgg
All you need do is remove a case cover, mount the hard drive in the enclosure and connect the cables, then re-attach the case cover. Usually the only tool required is a small or medium Phillips screwdriver.

External Hard Drive Keeps Disconnecting on its own

Ive been working on a rather large project on Final Cut Pro for some time now and my SeaGate 1tb FreeAgent external hard drive im using keeps disconnecting on me, this makes it impossible to export large files because it will disconnect before they have enough time to finish the export. Some times the hard drive will stay connected for almost an hour, but usually it will disconnect at around 30 minutes.
Ive tried setting the Energy Saver setting so neither my computer or my display will go to sleep, ever. Ive checked the external harddrive itself with disk utility several times and its always fine. Ive tried different cables, unpluging other unused usb and firewire cables, Ive upgraded my ram, just about everything i can find it the forums, and still no luck. I have other hard drives that i use that work fine. What solutions are out there? Please help.
Im using a Intel Imac 24th 2.16 Core 2 Duo with 2.5 GB of Ram.

I would first contact Seagate's tech support for a possible solution. If that doesn't prove successful then I would try a different product or consider building your own.
Basic Backup
Get an external drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
Carbon Copy Cloner
Data Backup
Deja Vu
Silver Keeper
Retrospect
Super Flexible File Synchronizer
SuperDuper!
Synchronize Pro! X
Synk Pro
Synk Standard
Tri-Backup
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.
Although you can buy a complete external drive system, you can also put one together if you are so inclined. It's relatively easy and only requires a Phillips head screwdriver (typically.) You can purchase hard drives separately. This gives you an opportunity to shop for the best prices on a hard drive of your choice. Reliable brands include Seagate, Hitachi, Western Digital, Toshiba, and Fujitsu. You can find reviews and benchmarks on many drives at Storage Review.
Enclosures for FireWire and USB are readily available. You can find only FireWire enclosures, only USB enclosures, and enclosures that feature multiple ports. I would stress getting enclosures that use the Oxford chipsets especially for Firewire drives (911, 921, 922, for example.) You can find enclosures at places such as;
Cool Drives
OWC
WiebeTech
Firewire Direct
California Drives
NewEgg
All you need do is remove a case cover, mount the hard drive in the enclosure and connect the cables, then re-attach the case cover. Usually the only tool required is a small or medium Phillips screwdriver.

External hard drive keeps disconnecting and then reconnecting

External hard drive on Time Machine, running via USB keeps disconnecting. Get the pop us that the drive wasn't disconnected properly. This Mac is brand new as is the hard drive. It is a Seagate 1T Free Agent.
After a minute or two it reconnects. I've run Seagate diagnostics and it says the drive is fine.
Any suggestions?

See #A1 in [Time Machine - Troubleshooting|http://web.me.com/pondini/Time_Machine/Troubleshooting.html] (or use the link in *User Tips* at the top of this forum), for a handy widget that will display the backup messages from your logs.
See what that shows; there may be a problem with the backup, which results in TM ejecting the drive. If so, the disconnect may be a symptom, not a cause. If so, see #C2 there. If not, or if you're not sure, copy and post them here.
Also, to rule out other USB problems, disconnect everything but keyboard and mouse; connect the drive directly to your Mac (no hub).
Make sure all connections are snug and secure.
Try other ports, cables, and combinations of the two (a plug that works fine in one port may not make good contact in another one, and throw intermittent errors).

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp? So far when I try to disconnect the external HD from the mbp, I get the following pop up window: The disk "external hard drive A" couldn't be ejected because "Lightroom" is using it. Quit that application and try to eject this disk again. When I do that and restart Lightroom 5, the Adobe Photoshop Lightroom - Select Catalog screen pops up but doesn't list my external hard drive A as a choice.
I've reviewed Adobe's Lightroom Help | Smart Previews Lightroom 5 web page and still haven't been able to figure what I'm doing wrong. Any help would be appreciated.

Your internal HDD. by default, is named 'Macintosh HD'. From what information you supplied, it looks like there is already a Lightroom catalog installed on you local (internal) HDD using the standard naming convention Adobe uses as well as a Lightroom catalog on your external drive which you created. To be sure of which catalog Lightroom is loading when it starts up, To do this, start Lightroom as you normally would. After it starts, select the Lightroom menu item, then select the Catalog Preferences item and finally, navigate to the General tab. The Location information will tell you exactly what catalog Lightroom is opening by default. This will likely be the Photography Mac Book Pro Versions catalog on your external HDD. Once that is confirmed, you are ready to proceed. As an additional test/verification, you can shut down Lightroom and, this time, start Lightroom while holding down the ALT/OPTION key. This will cause Lightroom to pause and display a screen which will allow you to chose a different catalog to open. Navigate to the /Users/[user name]/Pictures/Lightroom folder and select the Lightroom 5 Catalog.lrcat file. When Lightroom comes up, there should be no previews or folders as this catalog should be empty. Now you can be certain which catalog is being used and which catalog has all your data and you are ready to migrate your current catalog. Shut down Lightroom.
To migrate your current catalog, use Finder to locate your Photography Mac Book Pro Versions folder on your external drive. Select the folder and select COPY from the context menu. Next, use Finder to navigate to the /Users/[user name]/Pictures/Lightroom folder on you internal HDD. You can start at the Macintosh HD level and work your way down by opening each level (Macintosh HD/Users/[user name]/Pictures). Select the /Pictures folder and then select PASTE... from the context menu. When the COPY/PASTE is complete, you should see the following files on the Macintosh HD:
Macintosh HD/Users/[user name]/Pictures/Lightroom/ and
Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions
The Macintosh HD/Users/[user name]/Pictures/Lightroom folder will contain the empty default catalog the Adobe created when Lightroom was installed and Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions will contain a copy of the catalog you created on your external HDD.
You are almost done now. Make sure your external drive is still attached for this step. Restart Lightroom using the ALT/OPTION key again. When the Select Catalog screen appears, select the Choose a Different Catalog button (lower left side). When you do, a Finder window will open to allow you to navigate to a catalog of your choosing. Navigate to Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions and select the file Photography Mac Book Pro Version.lrcat. This is the copy you just created. Select the Open button and Lightroom should start. You should see all of your previews and settings just as before. Also, in the left hand panel, all of your folder should show up and none of them should be dimmed and none of your previews should display a small exclamation point badge. Either a dimmed folder name or an exclamation point badge indicates that Lightroom can't find the associated image file. If everything looks good, go to the Lightroom menu, select Preferences and then select the General tab. Under Default Catalog, select an option to either load the LAST catalog opened or select the Users/[user name]/Pictures/Photography Mac Book Pro Versions catalog from the drop down. Shut down Lightroom and then restart it normally. This time, when Lightroom starts, you should be viewing the new copy of your catalog. You can confirm this by looking at the General tab on the Catalog Preferences screen (Lightroom/Catalog Preferences menu items). Shut down Lightroom once again and this time, eject your external drive before restarting. This time, your folders in the left hand panel will be dimmed but you should be able to work with your smart previews. If Lightroom should display a Select Catalog screen with the external drive detached, double check your settings as it indicates Lightroom is still looking at the copy of the catalog on the external drive rather than the new copy you made.
Finally, if you are seeing dimmed folders and/or exclamation point badges with the external drive attached, this indicates a problem. You can select any folder and select Update Folder Location from the context menu. This will allow you to navigate to the copy on the external drive and select it. Lightroom will then update the catalog (select to synchronize the content). This will not only clear the dimmed folder problem but also remove the exclamation point badges for all photos in that missing folder. However, it may indicate that not all went well with the copy of the catalog so make sure to verify all went well. You can use the Get Info option on the two folders. You should see the same number of files/folders for both the copy on the internal drive as well as on the external drive but you can't rely on the byte count because of the possibility of differences between the geometry of the two drives. Hope this all helps!

I imported pics to catalogs on different external hard drives. Later renamed external HDs. I want to combine catalogs and have my source (NEF) files all together on one drive. Can I merge cats and will new path to source files be correct if when inporti

I imported different trips to different catalogs on different external hard drives. Later renamed external HDs. I want to combine catalogs and have my source (NEF) files all together on one drive. I’m not really sure how to get those source files back and get rid of the extra long path to where the source files are now located. If I re-link files to their current catalog (many different paths to files in same catalog) can I merge (import catalogs) into one master catalog? Will the new (Master catalog) have the correct link to the source file? If not, how or can this be done?
I have tried to explain my situation as clearly as I can. Do you understand my situation?
This maybe something you don’t have time to help me with. If not can you suggest somewhere I can get an answer? I really need help. PLEEEZZZ HELP ME.
Bruce Schuerman
Norman, OK
405_514-4875 (call collect)
[email protected]

I imported different trips to different catalogs on different external hard drives. Later renamed external HDs. I want to combine catalogs and have my source (NEF) files all together on one drive. I’m not really sure how to get those source files back and get rid of the extra long path to where the source files are now located. If I re-link files to their current catalog (many different paths to files in same catalog) can I merge (import catalogs) into one master catalog? Will the new (Master catalog) have the correct link to the source file? If not, how or can this be done?
I have tried to explain my situation as clearly as I can. Do you understand my situation?
This maybe something you don’t have time to help me with. If not can you suggest somewhere I can get an answer? I really need help. PLEEEZZZ HELP ME.
Bruce Schuerman
Norman, OK
405_514-4875 (call collect)
[email protected]

I imported different trips to different catalogs on different external hard drives. Later renamed external HDs. I want to combine catalogs and have my source (NEF) files all together on one drive. I'm not really sure how to get those source files back

I imported different trips to different catalogs on different external hard drives. Later renamed external HDs. I want to combine catalogs and have my source (NEF) files all together on one drive. I’m not really sure how to get those source files back and get rid of the extra long path to where the source files are now located. If I re-link files to their current catalog (many different paths to files in same catalog) can I merge (import catalogs) into one master catalog? Will the new (Master catalog) have the correct link to the source file? If not, how or can this be done?
I have tried to explain my situation as clearly as I can. Do you understand my situation?
This maybe something you don’t have time to help me with. If not can you suggest somewhere I can get an answer? I really need help. PLEEEZZZ HELP ME.
Bruce Schuerman
Norman, OK
405_514-4875 (call collect)
[email protected]

Is there any solution (other than buying
I really think 'buying' is the best solution on this one. Ideally, you would have at least five internal hard drives.
System
Projects
Cache/Scratch
Media
Exports
Use externals and network drive only for backup.

How do I transfer iphoto library to external hard drive keeping events intact?

Had a one to one session but forgot how to do this. I would like to transfer my iphoto library to an external hard drive keeping the folders and events intact. I figured out how to send all my photos to the hard drive but they all transfer in single images, if that makes sense, and then i have to go thru all of the 15,000 images by hand and sort them into folders. Ahhhhhhh!
When they showed me how to do this at apple I am able to open my external hard drive and see a folder labled 'iphotolibrary" and I am able to click it open and then all my events show up just like in iphoto library.
Also does your iphoto library "Trash" take up space on your HD? Forgve me if thats a dumb question but I am kind of a computer "dummy".
thanks so much. My hard drive has VERY little space left on it so I need to transfer ASAP.

I just posted this to another topic, but it applies here as well. Hopefully there's no prohibition on cross-posting on this board, my apologies to all if there is:
"I haven't read the whole thread, so someone could have already mentioned this, but I did the same thing, move my music library to an external drive. The Help articles are helpful, but only up to a point. When that didn't work, I called up AppleCare support up, and they took me through all the standard steps, and got stumped at the same point I did. Finally she suggested trying something, and that ended up doing the trick. So here in brief is what you do:
1) Copy over your "iTunes Music" folder to the external hard drive
2) Go into Advanced preferences to have iTunes look for the "iTunes Music" folder in the new location. If you're like me, your music won't appear in the Library.
3) In iTunes, go to the Library window (which is probably blank), then in a Finder window, find the icon for the "iTunes Music" folder in the new location. Drag that icon onto the Library window.
You should now see a progress window pop up showing all the songs that it's populating the Library window with."
20" Intel iMac 14" iBook G4, 233 MHz Beige G3 Mac OS X (10.4.5)

Time machine external hard drive requires repair every time I turned the computer off or after I ejected the external hard drive?

Time machine external hard drive requires repair every time I turned the computer off or after I ejected the external hard drive?

What kind of repair?

On installing Maverick, should external hard drive be disconnected?

O
When I install maverick! should the external hard drive be disconnected?

You should have a current backup of your system before the upgrade.
Theoretically no you do not need to disconnect,
but I would highly recommend it since you do not want to risk anything going wrong.

How do I capture tape-based media to my external hard drive? There is only one firewire 800 port on the back of my I mac. The manual says to import tape footage directly into fcpx, but then I lose my external hard drive. thanks for your help.

In FCP X How do I capture tape-based media (hdv clips)- which I want to import-to my external hard drive? There is only one firewire 800 port on the back of my I mac. The FCPX manual says to import tape footage directly into final cut, which works, but then I lose my external hard drive Do I have to import it into an event, then copy it over to an external hard drive? On Larry Jordan's tutorial, he has 3 external hard drives that show up on his monitor WHILE he imports his tape based media. How is that done? I can only get either the camera to appear OR my external hard drive. thanks for your help.

Thanks for your response, but that doesn't solve the problem. Yes, the LaCie hard drive has 2 firewire ports-
I have always done what you suggest (works fine in FCP7), but in FCPX when I do that the camcorder icon
does not appear. It only shows up when I DIRECTLY import the footage via firewire. ????

LaCie external hard drive keeps losing connection to Windows 8.1 computer

Hello all,
My LaCie external hard drive (Rugged version) seems like it keeps losing connection to my brand new Windows 8.1 laptop. The laptop is an HP Pavillion 15-p 133cl TouchSmart Notebook which I just got today. Basically, every few minutes, or if I nudge the external
a bit, the computer will seem like it disconnected and reconnected to the external hard drive in a split second and bring it up in the Windows Explorer. This external hard drive doesn't show any problems connecting to any other computer, but it has occurred
with 2/3 ports on this computer so far. I'm a bit worried, because I definitely DO NOT want the files on this external to get corrupted in any way. What should I do? Thanks a bunch.

may I know your external HDD model, to check which USB version to isolate power and cable connection issue
if this is USB 3.0 try to attached at USB 3.0 at your laptop, your laptop has 2 USB 3.0 and 1 for 2.0, for external HDD with USB 2.0 sometimes need more power / more than 1 connection, sometimes the power will loose
but since the trigger it will disconnect if you nudge the HDD, I suggest back up data to your laptop first, try to change with other data or power cable, try also update your laptop chipset
try to check with other device to isolate port issue
may I know if you are using other PC, did your external HDD also will disconnect if you nudge it?
contact your external HDD manufactured to get some suggestion

How to export photos from iPhoto to external hard drive keeping Events structure (files and titles)

Hello!
I’ve been looking for a Automator application that does this for quite a while now.
Basically I want to have an Automator application that saves a copy of my iPhoto pictures in a folder, inside Finder. Like a backup. Later on, I can save those “folders and files” on my external hard drive.
What I want it to do is this:
1) Export photos from a selected Album or Event on iPhoto. Using as title: “Event name” – “number” (I mean the number of the file: 1, 2, 3 …)
2) Save them in a folder in Finder that I want.
3) Organize the photos in different folders, the same way they are in iPhoto.
The idea I had, was that it would do this automatically every time I launch iPhoto, as if it was synchronizing the photos into that folder.
And then, every time I connect my hard drive, it copies these “real” folders into my hard drive.
Is that possible? If yes, could you help me creating it, or tell me how I can do so myself, or where to download something like it?
Thank you a lot! Kind regards,
xanacarfran2008

Is this waht you want to do?
It's built into the File Export function of iPhoto 9 (11). Select what every photos you want and use that option to put each photo in a folder with the Event title it came from as in this test of six randomly picked photos:
OT

My External hard drive keeps ejecting randomly in Snow Leopard. How do I stop this, and prevent it from happening?

I'm currently running a clean install of Snow Leopard version 10.6.8, and I have done nothing but attempt to mount my external hard drive, which is a Fantom 2 TB Greendrive connected via eSATA through an ExpressCard.
It performed flawlessly in Leopard, and I had no issues with it whatsoever. Then, I performed a clean install of Snow Leopard (erased the drive, and installed via DVD), and when everything had finished, I brought up a finder window, mounted my External Hard drive, and attempted to drag a folder to the desktop. It got to about 15%, and froze. Then, a few seconds later, it told me that I had removed it without ejecting it safely.
It continues to do this every time I try to move a large file to my cleanly installed internal hard drive. It varies on the amount of time it takes to 'eject'. Sometimes the file will get almost halfway there, and then the progress freezes, the 'eject' error is thrown, and my drive dismounts.
The file is about 6.2 GB, and it's vitally important to my livelihood to get this drive working reliably. (It contains CS5 (legitimate copy), as well as extremely important personal files, and i'm a freelance Web Designer and Developer, as well as writer and blogger.)
Short Version:
OS: 10.6.8 (Snow Leopard, clean install)
External: 2TB Fantom Greendrive (eSATA through ExpressCard)
Issue: Randomly ejects drive while transferring larger files.
Any help would be greatly appreciated! Thanks so much!
Taylor Daughtry

I have the same issues, The drivers are not great for eSATA right now. I think apple is puting all there effort into Thunderbolt. Ther should be a Thunderbolt to eSATA adaptor soon, untiull then you might want to get a firewire enclosure for you drive as I have had to do.
Maybe you can blog about my app? www.BeautifulClockRadio.com
Mark

USB Hard Drives Keep Disconnecting or Not Responding

Hi,
This is a long post - but one that I hope someone can offer advice on.
The Hardware
Mac Pro running OSX 10.8 (but this has happened on all versions of the OS i.e. 10.6/.7 etc)
3 x Internal SATA Hard Drives - All working perfectly.
External Drives:
2 x Western Digital My Book 1TB USB Hard Drives
1 x Seagate 750GB Hard Drive with USB2 connectivity
2 x IcyBox Dual Bay USB2 hard Drive enclosures using JMicron Chipsets - these enclosures have 2 x 1TB Western Digital Green in each (totaling 4 TB across the 2 enclosures).
D-Link 7 Port USB2 Hub
The Problem
- USB Hard Drives connected to the Mac are ejected from the system without notice and at random times AND/OR
- The external hard drive remains mounted, but when trying to write to the drive/partitions, Finder throws an error message up saying the operation cannot be completed - error code -50.
- Time Machine: TM will back up successfully several times, before eventually throwing an error up that it cannot create the folders required on the drive.
- The only way to be able to use the drives again is either remount the drive, or in some case, it is required to completely power the drive down and then reconnect.
Re-creating the problem
I have honestly not found a sure-fire way of replicating the problem. It seems completely random. It happens when I am actually sat at the computer, but it also happens when I am away from the computer.
In the past - my Time Machine hard drive has been one of the Western Digital MyBook drives. I also used the second MyBook for SuperDuper backups (extra redundancy). The 4TB drives in the IcyBox enclosures have been used to backup my ripped movie collection.
Recently however - I decided to have 2 of the 1TB drives in the IcyBox enclosures to be TM and SuperDuper backups. I have however reverted TM back to one of the Western Digital drives, purely for testing purposes. SuperDuper is backing up to one of the 1TB drives in the IcyBox.
I am trying various things to see if I can find the issue, but it is such a random event that it is taking ages to even come close to find a problem. Sometimes the drives will stay active for a few days, sometimes only a few hours, even minutes.
Theories
I have several theories as to why my USB drives continually disconnect.
1. The D-Link USB Hub.
Could connecting the drives through the hub be causing the problem? I don't really see how, unless it is a documented case that D-Link USB hubs do not play nice with OSX? To try and rule this out I have connected the current Time Machine back up drive (Western Digital MyBook) directly to the USB port on the back of the computer. The SuperDuper (IcyBox enclosure) drive is currently connected through the D-Link hub. I have removed all the other drives from the enclosures - so at present I have only 2 external drives connected (1 x 1TB Western Digital MyBook, 1 x 1TB Western Digital Green inside one of the IcyBox dual-bay enclosures - connected through D-Link Hub).
2. JMicron Chipset
I have done a bit of research on the internet and there are a few indications that perhaps JMicron SATA-to-USB controller chipsets found in a lot of external hard drive enclosures (including the dual bay IcyBox external enclosures that I have) do not play nice with OSX. If the JMicron chipsets in the 2 IcyBox enclosures is a problem - would that cause issues with other USB devices on the USB bus off the Mac? (i.e. can the JMicron chipset in the enclosures cause devices such as the WD MyBook drives which I assume use a non-JMicron chipset, to experience similar failures?)
3. Green Hard Drives
As I have said, I have 4 Western Digital Green 1TB hard drives inside the IcyBox Dual Bay Enclosures. Could the fact that these drives are 'Green' be causing a problem? They do go to sleep after x number of minutes, but they do wake up when required. But could on the occasion when I have problems, could this be caused by the 'Green' feature interrupting OSX in waking the drives? Coupled with JMicron chipset, could this be compounding the issue?
Possible Solutions
I am prepared to spend money on replacement drives and/or enclosures etc - but I would hate to spend x amount of money and have the same problem. So I am hoping to get some advice on what drives/enclosures are more than likely to work flawlessly with OSX.
Thanks for reading!

FYI - re: the SuperDuper drive that is in one of the IcyBox enclosures.
I just opened this drive up in Finder. I heard the drive wake up, but when I came to copy a file over (tried various file sizes) - I got the error -50 message.
Here is the info from Console.
31/07/2012 23:35:52.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:52.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
31/07/2012 23:35:53.320 fseventsd[55]: disk logger: failed to open output file /Volumes/Data 1/.fseventsd/0000000002478a7f (No such file or directory). mount point /Volumes/Data 1/.fseventsd
31/07/2012 23:35:53.320 fseventsd[55]: disk logger: failed to open output file /Volumes/Data 1/.fseventsd/0000000002478a7f (No such file or directory). mount point /Volumes/Data 1/.fseventsd
Also, while the drive was inaccessible, I tried 'Verify Disk' in Disk Utility - here are the results
Verifying volume “SuperDuper”
Checking file systemPerforming live verification.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Invalid leaf record count
(It should be 2 instead of 1)
Checking volume bitmap.
Checking volume information.
The volume SuperDuper was found corrupt and needs to be repaired.
Error: This disk needs to be repaired. Click Repair Disk.
Please also note that the all my external hard drives have recently been reformated using GUID part. map and HFS Journaled.

3 different external hard drives keep disconnecting every day -HELP

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