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.

It looks like the last filesystem operation before an error is thrown is an openat system call - I'm going to see if I can reproduce that issue by ls'ing that directory (once I figure out which directory it is)

Similar Messages

External Drive Disappeared!

My external drive is no longer recognized by my MacBook Pro. The drive is a SimpleTech, and I've used it for 3 years, on prior iMac and present MacBook Pro. Recently, I opened the external drive, and as I clicked on folders, the files in the folders would disappear. I restarted the external drive and computer, and everything was restored and could be opened. Ordered a new backup external, but before I hooked it up and transfered data from old external drive, the external drive disappeared from screen. Now can't get computer to recognize the old external. I can plug new external drive into computer, and it works fine, recognized, and Time Machine is backing up to new external drive. Unfortunately iPhoto library, and some other photos are still on the old external drive.
Armando

Armando,
If you have data you wish to retrieve from the old external drive, I would suggest getting a copy of DiskWarrior and using it to re-build the file system on the drive. This often fixes a drive that is not mounting or failing to transfer files due to directory corruption. Of course, if the drive has a hardware failure there is not much you can do to get to your data.
bd

HT1364 I need to reload my operating system on my computer. I created a folder, itunes media, on a external drive. When I download itunes again how do move my library information back?

I have to reload my operating system. I created and copied my library info to a folder, itunesmedia, on a external drive. when I download itunes again, how do move the files back?

You need to follow the moving media per: http://support.apple.com/kb/HT1364

I have replaced my ibook hard drive but when I start up I get a folder with a flashing question mark. I have tried installing the OSX disk using the "C" key but can't get any further than the flashing "?." What do I do? What is the problem?

I have replaced my ibook hard drive but when I start up I get a folder with a flashing question mark. I have tried installing the OSX disk using the "C" key but can't get any further than the flashing "?." What do I do? What is the problem?

Which iBook do you have?
http://support.apple.com/kb/HT1772?viewlocale=en_US
Which version of the OS is installed, and which version are you trying to install?
You could try starting up with Startup Manager and see if it will allow you to select the OS X install disc as the startup disk. If so, maybe you can proceed from there. I would recommend repairing the hard drive first since you are evidently having a bit of a problem with it.

Why have my TV shows on my external hard drive disappeared when I've deleted them from my iTunes library?

I am trying to free up space on my internal hard drive (MacBook Air). I copied my iTunes TV shows onto an external hard drive, following all instructions carefully. They were all there on the external drive - I opened a few and they played perfectly. I then went back into iTunes and deleted the shows, then emptied trash. When I went back into my external hard drive, all the TV shows had disappeared! Am now in process (yawn) of downloading the shows again onto my laptop, rather defeating my object of freeing up space. Can anyone tell me what I have done wrong?

Hello Janeburows,
You might have setup your iTunes in such a way that you store your Media files on your External Hard Drive and if that is the situation then whenever you delete anything permanently from your iTunes on your Computer when the External Drive is connected then the Content will get deleted from your External Hard Drive. To verify the Location for the Media files which you have on iTunes do the following.
Open iTunes > Preferences> Advanced and you will see it under iTunes Media Folder Location
http://support.apple.com/kb/ht1391

External hard drive disappears when imac wakes up after sleep

Hi Everyone.
Got a really silly question but I can't seem to figure out where to fix this
I have 4 USB 500gig hard drives all run off a 13 port powered hub.
Now I have one hard drive set aside for my films which I and ripping so they can be view via my apple tv 2nd gen. The other is for MP3's and the other 2 get are redundunt at the moment.
No the problem is when I rip a DVD, I rip it to the hard drive on the iMac and then trans the files to the external drive. As I rip them at a high quality (2 to 3 gigs per film) I get the transfer box saying it will take X amount of time. The only thing is the iMac after some minutes will go to sleep.
When you wake it up the hard drives have disappeared and the is an error saying the drive have been ejected incorrectly.
I'm assuming the iMc is putting the drives to sleep when it goes to sleep.
Is there a way to keep the hard drives running but only put the momitor to sleep. The problem is also happening when I use USB memory sticks (I have a 4/8/16 & 32gig sticks all with various bits of info that I am sorting out from the move from Windows PC to Mac.
Can anyone point me in the right direction to get this fix coz I can't seem to find the setting
Thanks
Rick

When you are doing this, set the drive to never sleep, slider completely to the right and display sleep to something like five minutes. Or just hit Control-Shift-Eject, to sleep the display. Uncheck "put the hard disks to sleep..." That said, the firmware on the externals may be spinning them down. But this shouldn't be happening if they are being written to.
System Preferences> Energy Saver.

Why does my external drive disappear from my desktop?

I am switching from PC to Mac. I have 2 externaldrives. Both have been formatted in FAT 32 by the MAC. When I plug them in the desktop and finder see them, then with both of them they have disappeared from the desktop and from finder. Still can be seen in disk utility and system profiler. How can I find them and why does this happen?

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
4. Wait for 5 min.
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
7. At the ">" prompt type:
      reset-nvram and hit the Return key
      set-defaults and hit the Return key
      reset-all and hit the Return key
the last command will restart your mac
8. Shut down your Mac
9. Connect all your FireWire devices to the Mac and turn them on
10. Restart your Mac.
All your FireWire devices should reapear, if not repeat the procedure
How to avoid the issue :
The only really proven way to avoid burning up a FireWire port is to connect all devices and to turn them on PRIOR turning on the Mac. Likely, one must unplug them and turn them off AFTER the Mac has been turned off. If you need to connect another device, then you're on for a shutdown of your machine...  It's a tad annoying but it guarantees that the FW ports won't be damaged.  Be careful when using self powered devices such as webcams, iPods, hard drives or hubs, as they can destroy the port pretty easily. Another thing is to avoid daisy-chaining hard drives.
When the FW port doesn't respond anymore :
In this case, peripherals won't be mounted upon plugging, and won't be displayed in Apple's System Profiler. The self powered devices will still be fed by the port, but won't respond either.  It happens that the PHY just hangs after a surge or a random problem. Once hung, the port will not respond any longer, it is possible to reset the component by going through the following steps :
1° boot the PPC mac in Open Firmware by holding [ Apple key - Option - O - F ] after the startup chime.  2° you'll get to a command prompt. the keyboard mapping will be QWERTY, so pay attention when you type the following :  RESET-NVRAM (enter)  RESET-ALL (enter)  3° Now the mac should restart itself and the port should function properly again.  If it still doesn't work, then it means that the PHY is damaged.
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"
912 or 912+ is FW800, the "+" means USB2
911 is FW400
924 adds eSATA support along with FW400/800
MacSales, OWC Tech Support library is where I would go first, as they do tend to have or links to, firmware updates for Oxford.
From Wiebetech:
I just upgraded my Mac OS, and now I'm having trouble with my FireWire device. What can I do?
A: With nearly every OS update Apple releases, some external drives are not recognized after the update. The typical symptom is that the device will not mount but the volume is visible and grayed out in Disk Utility. This means that the device is working properly, but the OS does not recognize the volume as mountable. Sometimes the drive does not show up at all.
The first thing to do is to see if repairing Permissions with Apple's Disk Utility First Aid feature solves the problem. If not, try repairing the disk with First Aid. Another possible solution is to zap the PRAM. This is done with a keyboard command while rebooting. Restart your computer and hold down the Command, Option, P and R keys. Consult the Apple web site for details.
If this does not work, then try pushing the PMMU reset button on the logic board. Consult the Apple web site for locations of the button for your Mac. If the drive still does not show up, shut down, disconnect all peripheral devices, and boot from the Mac OS Installation CD. The later the OS version, the better. Do not reinstall the OS, but when the Installer is loaded up and ready to begin, go to the File menu and use the Disk Utility program. Connect the drive that is having problems, then start the Disk Utility application. If you see the external drive and it is not grayed out, you know the drive is okay. Run Disk First Aid on it anyway. Then run it on your internal boot drive while you are at it. When done, unmount the external drive and UNPLUG it! Then restart the Mac.
When the Mac has restarted and is running on the internal boot drive, reconnect the external drive.

IPod Unit in Computer Resources list disappears when iTunes Starts

When iTunes Starts and detects the iPod device the iPod disk resource, in computer resource list (e.g. iPod (G:)) disappears. In this way any action I made to iPod fails.
I tried all but it doesn't working.
help me....

I tried two different USB ports each a failure. Other USB items are as follows: wireless mouse + keyboard bundle, wireless network adapter, digital camera (sits there all the time), and 500 GB Western Digital external hard drive. I am on a network but nothing from the iPod or iTunes accompanying folders are shared. Originally I had G: but it is now I:.
At the moment it works again (for now). I don't know why it worked for me but I tried a non-official iPod song loader and when that didn't work I just deleted everything on the iPod (hidden files too) and the next time iTunes tried syncing it asked to set up new iPod controls. After that it stayed on the My Computer folder and I could reload songs through iTunes. I haven't tried it more than this once because I don't want to jinx it. I don't suggest my way because it was probably dumb luck.

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!
I rebooted, restarted, disconnected, reconnected...nothing! Now when I connect the drive (a new Iomega 500GB) to my imac or my wife's macbook, the computers can't see it!
Any idea on how to manage this weird situation? Any help would be greatly appreciated.
thanks

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.
-Nic
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

Aperture 3 sees external drive differently when used as network drive

I have an Aperture library with 32000 files. When I started running out of disk space on my Macbook Pro I switch from Managed to Reference. I connected my external drive and Aperture moved the images. When I disconnect the drive, connect it to my iMac, and access the drive via my iMac, Aperture shows all my images as offline. I verified in terminal that the path hasn't changed (/Volumes/MyBook750/).
Is there a way to get Aperture to see the drive without having to use the Locate Referenced Files option every time I switch from external to network share?

The short answer is no there is not. I have a work-around but it is not for the feint of heart (dedicated 10GigE iSCSI network and some direct DB writes) but there is no easy way to deal with it.
If my memory serves this used to work a bit differently in Ap2 where a couple different criteria were used. Now it seems to be directly based on volume UUID even thought the path name is still stored in the DB. Maybe it's just me?
RB

HT201250 Can I restore photo files from Time Machine without the use of an external drive? I'm trying to restore lost photo files and I see them listed in Time Machine (without use of an external drive), but when I try to restore I get a error code 36.

Can I restore photo files from Time Machine without the use of an external drive? While I was transferring photos back and forth from a thumb drive something went haywire and my IPhoto was wiped clean! When I click on Time Machine I see all the dated pages (without an external storage drive connected), go back to a date where all my photo files are there, click "restore", and I get the message: "The Finder can't complete the operation because some data in file cant be read or written (error code - 36)"

Thanks so much Terence. I tried some of the fixes from that page, but then discovered the suggestion to compress the Time Machine Back up of the original library and transfer it as a zip back to my computer as detailed here:
http://pondini.org/TM/E9.html
That worked like a charm. I really appreciate it.

How to "Move" final cut pro to external drive. When I drag it duplicates the application. can I just delete the application on the MacBook?

I want to "Move" Application Final Cut X Pro to my external hard drive but when I drag it only copies it. Can I delete it from the hard drive now.
How do I tell Final cut X pro that I want it to use the External drive for all files?

Keep the application on your hard drive and when you save files save them to the external

Moved Itunes to an external drive. When prompted to update versions, the download would not install, now I get an error message indicating file msvcr80.dll is missing.

I moved my ITunes to an external drive. Whe I was prompted to run the update for a new version of Itunes, It downloaded but would not install. now when opening Itunes I get an error message indicating the file msvcr80.dll is missing. How can I restore this, and e

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Time Machine drive disappears when i reboot

When i reboot my iMac, my USB-connected external Time Machine hard drive does not remount, and it is not visible in the Disk Utility program. The only way i can get it to remount is to power-cycle the external drive. Unplugging and re-plugging the USB connection does not work. This could be a hardware issue (particularly with the USB cable), but i just wanted to check to see if anyone else is experiencing this problem.
Thoughts? Suggestions?

Hello r_dizzle,
Thank you for the details of the issue you are experiencing with your external hard drive. I found an article with steps you can take when an external device is not behaving as expected
I recommend following the steps in the section titled "Top troubleshooting tips" in this article:
USB and FireWire Quick Assist
http://support.apple.com/kb/HT1151
Thank you for using Apple Support Communities.
Best,
Sheila M.

I have my iPhoto set to an external drive yesterday when it was in use the usb disconnected i now have a message saying (your photo library is either in use by another application or has become unreadable) I have tried shutting down and restarting.

I have my iPhoto set to an external drive, when it was in use the usb disconected as i was moving my mac air, when i re-conected a message said (your photo library is either in use by another application or has become unreadable).
I have tried shutting it down and then re opening iPhoto but get the same message.
The reason for the external drive was there was not enough room on my hard drive, I have around 7000 photos on it.
is there a simple fix?
Regards
Dale

These are your options:
1. Restore the iPhoto library from the most recent backup that predates the issue.
          Advantages: Always works, if library damage is causing the problem and the backup is intact.
          Disadvantages: Impossible if you don't have a backup. All changes made since the backup are lost.
2. Repair or rebuild the library. Be sure to back it up first.
          Advantages: May solve the problem with no loss of data.
          Disadvantages: May fail. May take a long time if the library is large.
3. Scavenge the library with a third-party application called "iPhoto Library Manager," which you can find in a web search. From the application's menu bar (not the iPhoto menu bar), select Library ▹ Rebuild.
          Advantages: All images and albums should be preserved.
          Disadvantages: All books, calendars, and slideshows will be lost.

External drive disappears when I start mpd

Similar Messages

Maybe you are looking for