External USB Drive Issues. PC can see it but My MAC cannot.

I have this External USB HD. I used to have it plugged into my MAC, it worked fine the entire time I had it plugged in. I took it off to save some files from my PC, everything saved fine. I tried to plug it back into my MAC and I get nothing. I tried plugging it back into the PC and it sees everything just fine.
How can I fix this???????

If the drive ever worked on either system, it's not a matter of drivers. If you could see the files saved from the Mac to the drive when you first plugged it into Windows, the problem was probably caused by Windows. Because of the fact that Windows and Mac OS X use different file systems natively, if one was used to format the drive it may not 'play nice' with the other. Most external drives meant to be read by more than one OS are FAT32, which Windows can write to for sure and Mac OS X ought to be able to write to as an external drive. If the external drive's controller does anything to make the drive specially compatible with one OS or another, it could be mucking things up. If you can still view the drive in Windows, see what file system it says it's using.

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1.Open Disk Utility in your Utilities folder.
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3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
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This article has a link for more information on finding your profile directory: [[Fix the "Could not initialize the application's security component" error message]]. On Windows 7, you can try this (either in a Windows Explorer window address bar or from the start menu search box):
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I recently purchased a new Windows 7 computer. I copied my music from my old Windows XP computer using an external hard drive. I can see all the music, album artwork, etc. when I activate iTunes. However, no songs (purchased or uploaded) will play.

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Try using Migration Assistant following this guide:
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After upgrading to Lion, I can not connect to my NAS drive. I can see it but not connect. Any ideas?

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Please follow these instructions:
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Time Capsule external USB drive won't reconnect remotely over Back To My Mac

I'm running a Mac Mini at work, connected via ethernet to an enterprise network (I have no idea what routers they are using, or how they are set up).
At home, I have a MBP laptop and a Time Capsule (hardwired to cable modem) with an external USB drive attached.
All 3 machines (Mac Mini, MBP, TC via Airport Utility) have Back To My Mac switched on.
I can access the external USB drive on my home TC from my work Mac Mini....until the Mini falls asleep. When I wake it back up, the connection back to the TC fails. However....after restarting the Mini, the connection works again.
My first thought was that the corporate network / firewall / etc was causing the problem - not leaving correct ports open, or someting to that effect. However, I realised that if that were the case, restarting the Mini shouldn't help, but it does.
Does anyone have any idea how sleeping breaks being able to access a TC's external drive remotely over BTMM?
The Mac Mini is a 2.3GHz Core i5 with 8GB RAM and plenty of HD space.
The MBP is a 15" late 2013 retina, 2.6 GHz Core i7, 16 GB RAM, also plenty of HD space.
The TC is a 2 TB 4th generation model.
Thanks!
J

Sorry that did not work. This works well for me using Lacie drives, but I haven't tried Iomega.
Have you checked Iomega's site to see if any software/firmware updates available?
Also noticed during a quick search that a number of users are reporting mounting problems with Iomega. Not sure if this applies to you or not.
http://discussions.apple.com/search.jspa?search=Go&q=iomegadrive+won%27tmount

How to run windows from an external usb drive

Hi,
I've just install windows using bootcamp. after that i restore that windows installed bootcamp volume to an GUID partitioned external HDD. Now it is shown in startup disc, but when i select that (external HDD) volume it is unable to start.
I don't know what to do? I just want to run windows from an external usb drive like i can run mac osx.
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I want to add more capacity on hard drive of time capsule. Can i add a normal usb driver? I will see it as an external drive in the time capsule network? It will work as fast than time capsule? Thanks

I want to add more capacity on hard drive of time capsule. Can i add a normal usb driver? I will see it as an external drive in the time capsule network? It will work as fast than time capsule? Thanks

Can i add a normal usb driver?
Yes, but be sure that the drive is formatted correctly for Mac in Mac OS Extended (Journaled)
I will see it as an external drive in the time capsule network?
The drive will appear as a shared network drive, like the Time Capsule.
It will work as fast than time capsule?
No, the drive will operate at about half or 50% of the speed of the Time Capsule.

FSCK and reboot issues with external USB drive

I'm having an issue with an external USB hard drive I'm using. I've always had issues with this drive cause my reboot to "freeze" when it's mounted. Basically the system message with be sent out, but it doesn't actually proceed with the reboot. No switch to init 6 or anything, but the shutdown process is still active. I can continue to use the computer as usual, but I can't cancel the existing shutdown or try to enter init level 6 by hand. So I just got around this by unmounting the drive before I shutdown. However, lately when I try to unmount the drive I get an error saying that the drive is in use and I should check to see what processes are using it by runing lsof or fuser.
Yesterday I tried copying dsome files from the drive but there wasn't and activity on the drive. cp didn't report any errors though, it just sat there and did nothing. I tried running fsck on the drive, but didn't get much farther. I'll see some activity on the drive for about a second, then all activity stops and fsck just sits there. When I try to kill fsck, it won't. Even with a kill -9.
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[email protected]

Press the reset button on the device. It is located between the USB and power ports. Make sure to take-out the external USB drive before you reset the device. Or you can also restore the defaults by accessing the Administration tab > Factory Defaults sub-tab in the router’s web-based setup page. Check out this link for the set up; http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&docid=32cffead811249aea7e9fc6730bf59ad_KB25681_EN_v1.xml...

Performance Issues with 10.6.7 and External USB Drives

I've had a few performance issues come up with the latest 10.6.7 that seem to be related to external USB drives. I have a 2TB USB drive tha I have my iMovie content on this drive and after 10.6.7 update, iMovie is almost unusable. Finder even seems slow when browsing files on this drive as well. It seems like any access to the drive is delayed in all applications. Before the update, the performance was acceptable, but now it almost unusable. Most of the files on this drive are large dv files.
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Matt,
If you want help, please start your own thread here:
http://discussions.apple.com/forum.jspa?forumID=1339&start=0
And if your previous thread you aren't getting sufficient help for your iPhone, post a new topic here:
http://discussions.apple.com/forum.jspa?forumID=1139
You'll get a wider audience, and won't confuse the original poster. Performance issues can be caused by numerous issues as outlined in my FAQ*
http://www.macmaps.com/Macosxspeed.html
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How can I do backups on internal disc while sharing an external USB drive?

Hi,
On my Airport Utility there are two lines: "Time Capsule Disc", and below (indented) "Data".
(When I plug an external USB drive I can see it in this window as well)
Clicking (selecting) the first line, on the right hand side I can see the disc details (name, capacity and SMART Status (Verified)), and two buttons: Compress and Erase (I don't know if these are the words used on the english version mine is spanish).
Clicking on the second line (Data) I can see the Name "Data", capacity, used and available sizes and number of users connected.
First question:
Why Time Machine can't see the "Data" volume if I untick the "Share files" checkbox?
Second question:
Moreover, I've got a USB External Drive attached to my Time Capsule, so I have to have the "Share Files" checkbox ON, this makes my USB disc (fat32) available to my Windows computers but ALSO the "Data" volume can be seen from Windows. If there is any attempt to assign a Windows drive letter to the "Data" volume, next time Time machine wants to do a backup I'm getting a "disc wrong or missing, check credentials (or something similar)".
In summary, what I'm trying to do is Time Machine backups to the internal Time Capsule disc (making that disc unavailable/invisible to any other computer in my network) while sharing a USB external drive attached to Time Capsule.
Advice, please!

Yes you can go to > Music > iTunes folder and copy the whole iTunes folder and drag the folder to your external and then on the new Mac click and highlight the iTunes folder and then in iTunes click on the button at the top (add folder to library) and you should see all your songs transfer from the external to the Mac and all songs start filling up in your iTunes library on the Mac.
This is the easiest method all songs and other media such as songs, movies, apps will be transferred over however you may not be able to keep ratings & last played counts using this method.
To keep all metadata including ratings & play count use the Apple method exclusively for this if you have to have your metadata, play counts and ratings saved.
I used scenario one above because it one of the simplest methods and I was just satisfied enough just to transfer all media over.

Can a time machine usb drive backup the data from an external usb drive connected to and airport extreme*

can a time machine usb drive conected to my mac book backup the data from an external usb drive connected to and airport extreme ?

Hi Adam, if you think yoiur HD may be failing you could do a TM restore onto the new disk. I would rather see you do a clone either SuperDuper or CarbonCopy Cloner.Of your internal drive. That way you have a bootable backup in case it does fail.
btw - what are the symptoms of your failing drive?
-mj
Message was edited by: macjack

After upgrading to osx 10.9.3, my external hard drive was not able to mount, but it can be mounted without issue in osx 10.6, how do I solve it? it was formatted by disk utility.

Hi
After upgrading to osx 10.9.3, my external hard drive was not able to mount, but it can be mounted without issue in osx 10.6, how do I solve it? it was formatted by disk utility.
Thanks
PT

From the menu bar, select
 ▹ System Preferences ▹ Energy Saver ▹ Power Adapter
and uncheck the box labeled Put the hard disk(s) to sleep when possible, if it's checked.
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.
Start up in Recovery mode 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.

Can i include external usb drives in Time Machine backups

Can I include external usb drives and sticks in Time Machine backups?
This was the question I searched a week for. My machine is a MBAir with Yosemite. I have a bunch of USB HD and sticks. This is a sharing of what it took to solve. I lost a couple of important document revisions lately because of not having differential backups on them, so wanted to include them in Time Machine.
Yes it can, I found. But it's a wee bit backwards. And apparent inconsistencies drive you crazy. Time Machine is supposed to do this by default, and wants you to tell it what NOT to include. Trouble is, formats create many troubles.
But the USB sticks and HD's you buy are PC formatted. And you'd like to share, as the Apple does with FAT16, FAT32, and exFAT (to overcome the 4G size limit on the others). Even NTFS can be plugged in and be read-only. Turns out you just can't incorporate into TM backups.
Open Time Machine Options, and look at the drives listed in the exclusion window. Drives that you know to be plugged in and registered by Finder, may or not be registered in the exclusion window, and if registered and their icons may be bright or dimmed. Bright will NOT be included. Dimmed are excluded. Normally the operation is to use the or to exclude these drives from your next BU operation. (this instruction is lost the next time in manual mode). So if a drive or stick is shown and is bright it WON'T be backed up. If you it from the window, then it will grey out and WILL be backed up. If it's not there to offer you exclusion, you can browse to such a file or device so you can exclude it. TM's exclusion window will show the PC formats: FAT16, FAT32, and exFAT greyed out (as not included). NTFS is bright looking like it might work, but when doesn't dim, it disappears, and is ignored in the actual BU.
Sources are supposed to be included in the backup if it isn't shown bright in the exclusion window. In this respect I only use TM manually, and not for programmed BU's, so I cannot speak to that.
If everything you have is formatted for the Apple disc system (Mac OS Extended) then there are no contradictions or partial equivalences. The mounted disc or stick will show in TM exclusions window, and if you it, you'll see it in the Time Machine pile of calendared directories, with all the files. And of course it will do the differential backups for it that we use TM for in the first place. Just remember to prepare the BU by not excluding.
BUT NOW THE VARIABLES. It now depends upon the formats. I use the Paragon NTFS program to permit writing NTFS. (Apple can normally read but not write NTFS). Paragon is lovely because for normal computer use, I can read and write both Apple and PC files and disc formats in Finder (for 3 years now). But Time Machine cannot be reached by Paragon so it's NTFS behaviors are outrageous. Paragon reaches Disk Doctor so you can read, write, format and heal both Apple and PC formats. And this really confused things respecting Time Machine. I literally worked through every variable, from stick to disc to prove what did work, and when false appearances of working showed up.
Respecting that very Time Machine display of Finder windows piled backwards through time there's a confusing bug. When first opened, TM shows NOW as the current setup and works just like a Finder window in present time. And the outboard discs and sticks show as in Finder. BUT working back in time, the left window DOES NOT SHOW THE CONDITIONS AT BACKUP but rather in all left windows shows the present setup. So you need to work from the right hand side dates and times to go back and see when you had that stick or HD plugged in. And then, finally, you will see the files you wanted saved. But if there is a stick on the left than TM doesn't like but Finder likes you'll see it left but nothing will be in the files. Clicking on the pretender just jumps to the root.
My Disk Doctor provisions (with Paragon) show, Mac OS Extended (Journaled), Mac OS Extended (Case Sensitive Journaled), MS-DOS (FAT), exFAT, Windows NT Filesystem, Windows NT Filesystem (compressed). It's a better utility than in Microsoft and I use it for such maintenance.
Bottom line, I like TM very much. 2 years ago I lost my air and TM was able to reconstruct my machine many times in the course of the troubleshooting - all the way from the start to the last without ever missing a beat or a file. So I accept this limitation and make copies to another HD formatted in NTFS when I work on PCs.
Hope's this sorts out being lost in the desert for a few of you.
Jock
<Personal Information Edited by Host>

Storing normal data files on the Time Capsule is unfortunately not as easy as dropping the folder on the Time Capsule.
Open up Macintosh HD on the Mac
Look for the SHARED heading on the left
Click on the Time Capsule icon and a folder named "Data" will appear (unless you have renamed it)
Double click the "Data" folder to mount the drive on the desktop. You may need to enter the device password for the Time Capsule when you do this the first time
Once the drive icon is on the desktop, you can drag data to the icon and drop it there. Double click the icon to open up the drive and see the files

External USB Drive Issues. PC can see it but My MAC cannot.

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