After upgrading to mountain lion my usb drive gets disconnected

I have a late 2009 iMac that just installed Mountain Lion.
Every single USB external drive that is connected, shortly after a while gets unmounted.
I tried with disabling sleep mode for HD etc and no success.
Then I tried USB card reader and same exactly think. Memory card gets mounted and after about a minute gets unmounted.
What could be a problem or better yet, sollution ?
Any help is appreciated.

Power down and disconnect all ext HDs. Zap the PRAM and Reset the SMC, then try mounting them again.

Similar Messages

MacPro usb very slow after upgrading to mountain lion

When backing up with Carbon Copy to an external USB drive very slow, eventually the system freezes. After upgrading to Mountain Lion its been a complete pain when trying to do back-ups. Does Apple have a USB software fix for this?

Disconnect the external drive and see whether there's an improvement.

Cinema display USB stops working after upgrading to mountain lion

I am using a newly bought 27' Cinema display + mid 2011 MBA. an Apple USB keyboard is attached to the display USB port, and a logitech mouse is attached to the USB port on the keyboard.
After upgrading to mountain lion, when I unplug the thunderbolt from MBA, and then plug it back, the USB keyboard and mouse stops working. Moreover, I cannot open anything in System preference, and cannot properly shutdown the machine!
Please help on this issue.

Launch Terminal, type or copy/paste the following:
killall Dock
Hit enter.

Why would Flash Drive be different after upgrading to Mountain Lion?

Ever since I upgraded to Mountain Lion my Flash Drive is absolutely unfamiliar to me! There are so many extra items in it that I never added.
Is there a reason for this?
(OS X 10.8.5)

Right, i eventually got the time to take it in ( 90 mile round trip )
and they said they would stress test it as it could be the desk it's on acting as an amplifier, really?
anyway i collected it a week later, they say they found nothing wrong at all.
I've got it on a piece of foam rubber matting now , but lo and behold, it's exactly the same,
are all mac's noisy now? i suppose I'll have to live with it,
anyway thanks to all for trying to help, cheers.
and apparentley the memory stick thing depends on the speed of the individual stick,
i didn't have that problem with my old Imac g5 ppc (pre intel) is it a case of two steps forward, one step back?

After upgrading to Mountain Lion 10.8.2, I cannot print to my Samsung laser printer ML 2525w? How can I get this set up to print?

After upgrading to Mountain Lion 10.8.2 on my iMac, I cannot print to my Samsung B&W Laser printer ML 2525W either by USB or wireless. Any help on how to setup or reconfigure would be apprecaited.
I either print blank pages or prints one time then goes off line, or spits out a bunch of blank paper, etc. Have gone through all the standard fixes, reboot, reset , reload driver, etc.

From the link to the Thread you provided, I worked through the one message procedures that were listed.
For ease of reference, I have copied them and printed them below. This was an old thread but the guidance still works with no firmware upgrade required.
I would stress that you MUST delete any and all files relating to USB connection of the printer to the MAC, including all print drivers (from both Apple and Samsung either from CD or web downloads) and all print queues, etc. I was only able to get the printer to properly hand shake with my Mac by setting it up wirelessly after all old files were deleted with hard power off reboots on both the Mac and Printer.
I hope that someone from Apple will pass this note along to their programing department because there is some type of incompatibility in the new ML OS and the Samsung ML2525w print dirvers used for a cable (USB) type connection. Apple needs to be talking to Samsung to get the USB issue resolved. I am going to post this same message on the Samsung site to see if someone from there will contact Apple to work together on a final solution for USB connectivity.
Here is the steps I followed to get my ML2525w to work in the wireless mode. Again, I cannot stress the need to clean out all the old files (drivers, print queues, etc. - everything) before setting up wirelessly.
As a note, I ran this printer with Lion for almost 2 years and it always worked fine (both wireless and USB). From other comments on the thread, users were good with this printer using Lep. and Snow Lep also. - - no issues from either a USB connection or wireless until Mountain Lion.
Before the fix, I was experiencing many of the same issues as described on user chat threads, printer going offline after a print job. 1st page sometimes printing but all the rest of the pages were garbage. No printing at all. Printer just running a bunch of blank pages out. etc.
I run an iMAC 27" desktop with the ML OS upgrade just installed from Lion.
"I've just installed one of these printers for my parents.
First of all, don't waste your time connecting the ML-2525W as a USB printer. The printer will go offline after each print job. It's hopeless, at least (I assume) until Samsung gets around to publicly releasing a firmware update.
Instead, you have to use the ML-2525W as a wireless printer. In that mode, it works fine.
This is what I did:
(1) First, if you have already attempted to install the Samsung driver software from the included CD-ROM, uninstall it. Get the uninstaller from the Samsung support site:
http://www.samsung.com/us/support/downloads/ML-2525W
Download the "Printer Driver (ver. 4.0)" ZIP file. It unzips to a folder that contains the uninstaller. Likewise, download the "Smart Panel Driver" ZIP file and uninstall the Smart Panel software.
(2) Disconnect the USB cable from the printer, if it is connected. Pull the power plug on the printer and power cycle it.
(3) Restart your Mac.
(4) Go to the "Printer Driver (ver. 4.0)" folder that you previously unzipped. Inside it is a folder named "WirelessSetting". Open the folder and run the "Wireless Setting.app".
(5) The application will ask you to connect the USB cable to the printer. Do so, and the Mac should be able to communicate with the printer to perform the wireless setup.
(6) The application will show you a list of wireless networks. One of them is the wireless interface in the printer (ad-hoc). You can ignore that unless you intend to use the printer without connecting to another wireless network. In my case, I selected the wireless network in my parents' home (infrastructure) and entered the security passphrase. The application then configured the wireless interface in the ML-2525W to connect to the home network.
(7) The Wireless Setting application will then tell you to disconnect the USB cable.
(8) After finishing the Wireless Setting application, go to Word, Textedit, Pages, or Safari, and select a file or page to print. In the print dialog window, you should see the ML-2525W as a "Nearby Printer" (i.e. via Bonjour). Select the ML-2525W, and your Mac will automatically connect to Apple's Software Update and download the latest Samsung driver. If for any reason the Software Update download does not succeed, you can manually download and install the Apple driver using the previously published link in this discussion.
(9) After that, you should be able to print to the ML-2525W whenever you want, without the printer going offline.
(10) If you have a USB printer queue still in your Print & Fax Preferences (from your previous unsuccessful attempt to connect via USB), you can delete it. You only need to keep the Bonjour queue.
Obviously YMMV, but in my case this procedure got the printer working reliably without the need for a firmware update."
MacBook (white 12"), Mac OS X (10.6.5)

HT4798 username/password not working after upgrade to mountain lion

hello, on my imac after upgrading to mountain lion my computer password and/or username seems not to work anymore: when i want to install an update or search for updates on the app store the combination i used so far, does not work anymore. i tried to find out how to reset the computer password but without too much success, and i'm a bit confused, what can i do? thanks a lot

You went wrong at the very beginning by not erasing the hard drive of a used computer before starting to use it yourself. I suggest you do that now.
Back up all data to at least two different storage devices.
Boot into Recovery (command-R at startup), launch Disk Utility, and erase the startup volume. This operation will destroy all data on the volume, so you had be better be sure of your backups. Install OS X. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.
When you reboot, you'll be prompted to go through the initial setup process. That’s when you transfer the data from one of your backups. For a walkthrough, see here:
Using Setup Assistant
Don't transfer the Guest account, if it was enabled on the old system.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.

Imac keeps crashing in time machine backup after upgrade to mountain lion

2008 imac kept crashing (shutdown and restart) during first backup after upgraded to mountain lion. The backup size was about 10GB but time machine crashed after a while (at most 2GB) and never completed backup. So, I don't have any backup since right before I upgraded from Lion. Any suggestion?

Something strange happened. I was able to get time machine to work by going out to the login screen (the account kept logged in) and let it run the backup with the screen off (screen auto off after a few min). I tried it on two different external drives and that did the trick on both. Since the initial Mountain Lion backup was huge (155 GB), I was quite surprise that it worked at all. I assume your MBP was a Lion to ML. I also just did a 2012 MBP upgrade but that one was smoother. I did not recall having crashing issue. One thing I did find during this was that my WD passport USB drive was corrupted. Not sure it was the cause or not. I had to erase and reformat to get it back to work. Maybe do a verify disk to confirm. Good luck.

With Lion I had 2 user accounts. Why do I have three user accounts after upgrading to Mountain Lion?

I had consistenlty had a master admin user account for myself under Lion, plus the "Guest" account recommended and created by Lion. After upgrading to Mountain Lion, I now have the same 2 accounts, plus a new one called "Other." Why do I have that? Why was it created? How do I get rid of it if it is not needed?

I meant to include this info from the System Profile:
Maybe easier to read:
Canon MF4400 Series:
Status:          Idle
Print Server:          Local
Driver Version:          1.1.0
Default:          Yes
Shared:          Yes
URI:          usb://Canon/MF4400%20Series?serial=0122F5200302
PPD:          Canon MF4400 Series
PPD File Version:          1.1.0
PostScript Version:          (3010.000) 550
(3010.000) 651
CUPS Version:          1.6svn (cups-327)
Scanning support:          Yes
Scanning app (bundleID path):          -
Scanning app version:          -
Scanner UUID:          00000000-3031-3232-4635-323030333032
Printer Commands:          none
CUPS filters:
capdftopdl:
Path:          /Library/Printers/Canon/CUPS_MF_Printer/Bins/capdftopdl
Permissions:          rwxr-xr-x
Fax support:          No
PDEs:
BasicSettingsPDE.plugin:
Sandbox compliant:          Yes

After upgrading to mountain lion i keep getting an error message saying my startup disc is full. it shouldnt be full because there is barely anything on there and i was running windows with bootcamp prior to this with no issues

after upgrading to mountain lion i keep getting an error message saying my startup disc is full. it shouldnt be full because there is barely anything on there and i was running windows with bootcamp prior to this with no issues. my computer now freezes and programs close randomly. The usual command for opening windows with bootcamp doesnt work. once in restarted my computer after it froze and it rebooted in windows automatically. i really just want to know if there is a way to take the upgrade off my laptop because it is very annoying.

Hi Memalyn
Essentially, the bare issue is that you have a 500GB hard drive with only 10GB free. That is not sufficient to run the system properly. The two options you have are to move/remove files to another location, or to install a larger hard drive (eg 2TB). Drive space has nothing to do with SMC firmware, and usually large media files are to blame.
My first recommendation is this: download and run the free OmniDiskSweeper. This will identify the exact size of all your folders - you can drill down into the subfolders and figure out where your largest culprits are. For example, you might find that your Pictures folder contains both an iPhoto Library and copies that you've brought in from a camera but are outside the iPhoto Library structure. Or perhaps you have a lot of purchased video content in iTunes.
If you find files that you KNOW you do not need, you can delete them. Don't delete them just because you have a backup, since if the backup fails, you will lose all your copies.
Don't worry about "cleaners" for now - they don't save much space and can actually cause problems. Deal with the large file situation first and see how you get on.
Let us know what you find out, and if you manage to get your space back.
Matt

After upgrading to mountain lion my mac is very slow?

Hello
After upgrading to mountain lion my mac is very slow
It was starting in 10 seconds and shuting dow in 5 seconds and now it's taking more than one minute to start it or shut down it and everything is slow
why????????/
Thanks

First, back up all data immediately, as your boot drive might be failing.
Take these steps when you notice the problem.
Step 1
Launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Activity Monitor in the icon grid.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)
Step 2
You must be logged in as an administrator to carry out this step.
Launch the Console application in the same way as above. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.
Post the 50 or so most recent messages in the log — the text, please, not a screenshot.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into a message.
Important: Some personal information, such as your name, may appear in the log. Edit it out before posting.

ISight is not working after upgrade to Mountain Lion.

Please help!
After upgrade to Mountain Lion, Skype, Photobooth and etc can't detect iSight.

I tried the SMC option for my Mac (version details below)...but this still didn't solve my problem.
Model Name:
MacBook
Model Identifier:
MacBook7,1
Processor Name:
Intel Core 2 Duo
Processor Speed:
2.4 GHz
Number of Processors:
1
Total Number of Cores:
2
L2 Cache:
3 MB
Memory:
4 GB
Bus Speed:
1.07 GHz
Boot ROM Version:
MB71.0039.B0E
SMC Version (system):
1.60f5
Sudden Motion Sensor:
State
Enabled
In fact when I check under "About this Mac ==> More Info ==> System Report ==> Hardware ==> USB"
this is what I see:
-> USB Bus
      -> BRCM2070 Hub
             Bluetooth Host USB Controller
          Apple Internal Keyboard/Trackpad
      -> USB Bus
      -> USB High-speed Bus
      -> USB High-speed Bus
I find it hard to beleieve that the OSX Mountain Lion upgrade (from OSX Lion) can conk the camera hardware. All softwares such as Skype, Facetime, Image Capture show "No camera detected" after the OSX Mountain Lion upgrade. All of these were working perfectly fine before the upgrade.
Any help in this regard would be highly appreciated.
Regards,
Vishy

ITunes doesn't sync iCal with iPhone after upgraded to Mountain Lion

iTunes doesn't sync iCal with iPhone after upgraded to Mountain Lion. I even tried to use Replace Information On This iPhone and it doesn't work. Any idea guys?

I'm having the same problem. It's as if my iPhone and MacBook Pro now have two separate calendars.
Basically, I have a MacBook Pro (Mountain Lion, 13", late 2011) that I sync via USB with an iPhone 4S (iOS 5.1.1). Before upgrading to Mountain Lion, all of my iCal events would sync flawlessly. But none of the events I've created in iCal (Calendars) since upgrading have synced to the iPhone. Likewise, no new events that I create on the iPhone Calendar will sync to iCal. Also, changes to an existing event (even one created before upgrading to Mountain Lion) don't get synced either.
Everything else seems to be syncing just fine though (music, apps, contacts, etc).

Server admin is unable to login to server.app after upgrade to Mountain Lion Server?

After upgrade to Mountain Lion Server I am unable to login to the server tools. When I input the admin user name and password the dialog box just shakes indicating the wrong password. But it is the correct password. How do I reset the password or if necessary how do I rest the server and start over on Mountain Lion. I found info on how to reset the server on previous versions of the server which involved executing a plist in the LaunchDaemon folder. However that file does not exist on the server following upgrade to Mountain Lion.
Thanks, Howard

I upgraded today and had the same issue. I took following steps to fix my computer.
Boot into Recovery Partition (Hold Option Button while booting)
Open Terminal.
Type resetpassword
Select your hard drive
Select the user account (Administrator)
Enter a new password for the user
Reenter password
Save
Restart
Boot normally, Login as Adminstrator with the new password and add "Admin" permission to your account.
Restart
Everything should be working as expected

After upgrading to Mountain Lion on my 2011 27" iMac, my Mac occasionally lock-ups.

After upgrading to Mountain Lion on my 2011 27" iMac, my Mac occassionaly locks up while using Safari, Mail or Dreamweaver and I have to d a force-quit, then restart my Mac. Anybody having similar probelms?
I am thinking about doing a clean install of Mountain Lion. Would I be able to restore my applications and data from Time Machine after the re-install?

My 24 inch iMac... 2.8 GHZ dual core (Early 2008) is having the same problem. After it sleeps, I go to use something... and the beachball of death occurs. This happens multiple times a day... and let me tell you... it is annoying... and I am the one who is being annoyed!
It could possibly be revolving around safari... as that is really the only thing that is running consistently. I don't use iTunes on this iMac as I have so many other Macs up and running in the house... and I never consume media on it... so I kind of dismiss iTunes being the culprit.
This is majorly affecting my Mac... in terms of reliability and uptime... which coincedently is the main reason why I switched to Mac in 2008. This is my only Mac that could upgrade to ML... so I don't know how widespread this is... but I hope that this problem can be solved...
I agree with another person who commented on this issue... do we really need a 10.8.1 update already... to fix this?

After upgrading to Mountain Lion my Mac Book pro takes 1min 15 to load sec to open, never took that long.

after upgrading to Mountain Lion my Mac Book pro takes 1min 15 to load

Apple made some changes to increase security that slowed the boot time.
Startup - Slow Boot
Startup - Slow Boot (2)
Startup - Slow Boot (3)

After upgrading to mountain lion my usb drive gets disconnected

Similar Messages

Maybe you are looking for