External HD (WD Passport) disappeared from Mac - shows up on PC

I have a 2tb Passport Ultra we've been using on our Macbook. All of a sudden it stopped appearing yesterday. The light still comes on and the drive runs. I bought a new one to double check and the new one (with new cable) also does not appear (on disk utility or anywhere else). So it must be something with my compuer. The mac is plugged into the AC outlet while testing. When I test the drive on my PC laptop, it appears under device manager. Any ideas?
Thanks!

I still haven't been able to figure this out. Any ideas out there would be greatly appreciated. Thank you!

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External Disc Drive disappeared from Mac Mini Devices

Hi Forum,
my External USB2 Drive has disappeared from the devices list on my Mac Mini. When i was with the Mini i turned it off and on, Mini and CD Drive, unplugged and replugged the Drive, but i didnt appear. Ive had to come away for a few days and access the Mini remotely. It still doesnt show.
Is there anyway to make it find it? scan USB ports? look at what is connected? Remotely or when home?
Odd as its not done this before. And im still on OSX 10.8...

From your description I am assuming you have not instgalled any new USB, Bluetooth, Firewire, devices, drivers, hubs, etc.? If my assumption is correct then the logical place to start is with the drive and its connections...
Unplug and replug all USB connections. Surprisingly this may cure a number of different problems.
Try another USB cable.
Boot into Safe mode by holding down the Shift key after a cold boot. If the drive mounts normally then it is likley another USB device drive or device that is the problem.
If you are connecting through a hub, connect directly to the computer. If the drive mounts normally then your hub has probably gone bad.
If possible connect the drive to another Mac. Does it mount normally? If so then the USB port in your Mac may have gone bad. That requires a new logic board to fix.
Reset the SMC.

Email disappeared from Mac Mail.

Hello. Email has disappeared from Mac Mail. Running last updated Mavericks. I went back in the time machine settings to revert to the day before the mail disappeared, and each time I go in there, I can see the mail showing up. Except, when I go to revert, nothing transfers back into the account. Any advice on what is going on and how to fix it? Years of mail are now "gone."

Okay, there is definitely an error message coming up in the log. I only selected a few messages from 2008 to restore. I selected just one of the error log messages I received (essentially one for each email it tried to restore). Thanks for all your help. As an aside, if it helps you to respond, I've just started a computer science degree, so I'm starting to feel my way around this stuff, but have a good cursory understanding. Not to say that your directions aren't just succinct and perfectly laid out!
9/23/14 7:16:07.421 PM Mail[3178]: *** Assertion failure in -[DateCell _initDateFormatter], /SourceCache/Mail/Mail-1878.6/Mail/Mail/MessageList/RowUI/DateCell.m:475
DateCell requires its date formatter to have 10.4 behavior
    0   MailCore                            0x00007fff89ad08bc -[MCAssertionHandler _handleFailureWithPreamble:description:arguments:] + 141
    1   MailCore                            0x00007fff89ad072d -[MCAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 215
    2   Mail                                0x0000000100f1fe0f Mail + 97807
    3   Mail                                0x000000010104b51b Mail + 1324315
    4   AppKit                              0x00007fff925bd9f0 -[NSTextFieldCell init] + 31
    5   Mail                                0x00000001010fdc23 Mail + 2055203
    6   Mail                                0x00000001010fe096 Mail + 2056342
    7   Foundation                          0x00007fff8c017dbe -[NSObject(NSKeyValueCoding) setValue:forKey:] + 389
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    16 CoreFoundation                      0x00007fff880973e4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
    17 CoreFoundation                      0x00007fff88096f1f __CFRunLoopDoTimer + 1151
    18 CoreFoundation                      0x00007fff881085aa __CFRunLoopDoTimers + 298
    19 CoreFoundation                      0x00007fff880526a5 __CFRunLoopRun + 1525
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Exchange Archive folder disappears from Mac Mail (Mavericks)

My Exchange 2013 Archive mailbox folder keeps disappearing from Mac Mail (Mavericks). When it does, the mailbox/folder shows 0 messages and 0 size in the Account info box. To temporarily solve the problem, I disable the account, quit mail, and reenable the account. Then the Archive folder/mailbox reappears. This happens several times per day. By the way, the folder is still visible on Outlook Web Access and through the Outlook client. It is simply invisible to Mac Mail. Does anyone know how to solve that?

Well, somehow, it disappeared after 10.8.2. and the following fixes which had no numbers.
Mail startet and told me, that Mailbox is somehow adapted and now everything works fine.
Strange....

I've downloaded Lion to my iMac and want to also have on my Mac Air - the installer has disappeared from Mac, can i download from app store for free to my Air?

I've downloaded Lion to my iMac and want to also have on my Mac Air - the installer has disappeared from Mac, can i download from app store for free to my Air?

Yes but use the same account. Then follow:
http://hints.macworld.com/article.php?story=20110803234424130#lsrc.nl_mwhints_h

External Hard Drive Suddenly Disappeared From List

Hi guys. About a week ago, a weird msg started popping up about my external (F:) hard drive, after which nothing inside of it would show up anymore.
If I clicked on a folder, there'd be nothing in it. Then if I unplugged, and re-plugged, it would all be back like nothing happened.
Yesterday, the D: drive disappeared from the population list in My Computer altogether, and no matter what I do it doesn't return. I've only tried plugging into different ports and restarting, but that's all I know how to do. I was going to system restore and
see if that helped, but this message came up on the screen:
"Changes made to drive(s) D: after this point cannot be reversed because the drive was either excluded from system restore monitoring, or was turned off or removed"
I have no idea what to do. Literally everything is on that drive. Any suggestions? And thanks in advance for any help, it'd be appreciated.

Just tried it on another computer and the drive didn't show up there either.
Its a Seagate FreeAgent Desktop harddrive.
What can I do?

Gspeed ES Pro RAID keeps disappearing from Mac, have to re-initialize!

UPDATED VERSION:
MAC PRO KEEPS LOSING CONNECTION TO RAID DRIVE.
After 9 months of organizing a documentary film edit on an external RAID drive (12TB, Raid 0. Yes, I have 2 layers of backup), I purchased the PNY Nvidia Quadro 4000 video card for the primary edit. Soon after, I began having boot up issues. The screen would freeze at various points during the startup process, requiring manual power-downs.
Over the past two months, my computer has lost communication with the RAID 3 times, forcing me to rebuild it from my backup drives (10TB). One tech at Diskwarrior said my computer lost the partition, and that the 1s and 0s had been largely replaced with gibberish.
The Raid becomes unrecognized by my computer in one of two ways:
1- After two days of copying data back over to the raid (rebuilding it), I get an error code -36, saying a file cannot be read or written, then the Raid partition disappears from disk utility and the next time I start up the computer says it doesn’t recognize my drive. The ATTO configuration tool (the card that attaches my raid to the computer) sees the drive, but my computer does not. I have to re-initialize it and start over again.
2- The Raid will go from being recognized to not being recognized when I reboot one day. Again, I have to re-initialize and rebuild.
I removed the PNY Graphics card and put in the stock ATI Radeon HD 5770 it came with. On day 2 of rebuilding the RAID, I got the error -36 and the Raid disappeared from disk utility again. When I opened the raid folder, which seconds before had 10 TB of data on it, it read as zero items. So the PNY Nvidia card was NOT the problem.
Apple has worked on the computer 3 times, running extensive hardware tests, but the same problem persists. At one point they said my blackmagic card was the problem, and more recently they said I probably have bad ram. I tried separate ram (the old 6GB my computer came with), and my computer seemed to begin booting up okay, but one day later I had the -36 error, the RAID couldn’t be recognized again and I lost the data during another rebuild. Apple even replaced the Ram Tray, but the same problem persists.
G technology says my RAID’s hardware is fine, and ATTO, who makes the Raid card, says it looks fine to them too. This does not mean they are 100% not the problem though.
Yesterday as I was attempting to rebuild the RAID again, I saw the -36 error come up, and files stopped copying. I immediately made a screenshot and noted the time.
Today I spoke with a really cool tech at Apple named Ron who helped me investigate the Kernel log, and this is what it said (the RAID is called FadingWest):
Dec 6 17:05:36 Jesses-Mac-Pro kernel[0]: hfs_swap_BTNode: invalid forward link (0xbb739311 >= 0x0000df00)
Dec 6 17:05:36 Jesses-Mac-Pro kernel[0]: hfs: node=2717 fileID=4 volume=FadingWest device=/dev/disk3s2
Dec 6 17:05:36 Jesses-Mac-Pro kernel[0]: hfs: Runtime corruption detected on FadingWest, fsck will be forced on next mount.
Ron believes my problem is with the RAID card. He thinks it’s dropping the connection. So I’ve got an RMA going with ATTO for a new one.
Here are the final things I can troubleshoot at this point:
New RAID card (ATTO)
New RAID drive (G-Technology)
Motherboard / PCI lanes (Apple).
NEW COMPUTER (Apple)
Any ideas are appreciated. Here are the items in question:
Mac Pro mid 2010 2x2.66 Ghz 6 core Intel Xeon OS X Lion 10.7.5
G speed ES Pro (G Technology) – 12TB @ RAID 0
ATTO R680 RAID card

I found this on another help site, I think it's the trick:
there are 2 halves to the Dock. With a bar in the middle.
on the left side, there are 2 sections. the furthest left are the icons that will stay in the dock, then on the right side of the left half of the dock, are the temporary icons, the ones that just stay there till the program is done.
You can freely move a temporary icon to the left and it will be come a permanent icon.
I am reminded of the wizard of OZ here... you could always get to firefox... you just had to click your mouse (and drag an icon)..

Photosmart 5520 - Scan Option disappears from Mac OS X 10.9 to 10.10 update

I have been searching this problem for the last 2 hours. I have already installed, deleted, reinstalled drivers from this website and Apples site.
Under printers and scanners in my System Preferences, I can choose and easily print from our HP 5520, but the scan option button has now disappeared from my 10.9 to 10.10 update. My wife has the exact same computer as me and we are both connected to the exact same 5520 printer, but she is still on 10.9 (scan option is available and works) and I am on 10.10 (scan option is gone and HP Scan doesnt work either).
Solutions please!
Solved...

Hello @caking1s,
Welcome to the HP Support Forums! I understand since doing the Mac update from 10.9 to 10.10 now you are unable to scan with your HP Photosmart 5520. Please go ahead and follow the steps listed below:
Scrub/ Uninstall
• Open the Applications folder > HP or Hewlett Packard folder > HP Uninstaller
• Click continue, click on one of the printers in the list.
• * Only do this step if you do not have any other HP Printers. Hold down Control, Option and Command, While holding the three buttons down,
• Click uninstall.
Reset Printing System
1. Click the Apple icon ( ), and then click System Preferences.
2. In the Hardware section, click Print & Fax/Scan. The Print & Fax/Scan dialog box opens.
3. Right-click (or Ctrl +click) in the left panel, and then click Reset printing system…
4. Click OK to confirm the reset.
5. Type the correct Name and Password.
6. Click OK to reset the printing system. The Print & Fax dialog box shows no printer selected
Note: This will remove all printers in the print and Fax/Scan, any printer removed can be re-added later by clicking the plus (+) symbol..
Repair Disk Permissions
1.On the Dock, click Applications, and then click Utilities.
2.Double-click Disk Utility.
3.Highlight your hard drive/partition on the left (by default this is "Macintosh HD").
4.Click the Repair Disk Permissions button at the bottom of the window.
5.Once the repair is complete, restart the computer.
Restart the printer. Now you can download and install the printer software and install it. Click on the link below to begin the download and follow the on screen instructions:
HP Photosmart Full Feature Software and Drivers
I hope this helps, please let me know the outcome!
Thanks,
HevnLgh
I work on behalf of HP
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to the left of the reply button to say “Thanks” for helping!

External Airport Extreme HD disappeared from Finder

Hi everyone,
My external HD connected to the Airport Extreme antenna has disappeared from the Finder. I have been using it yesterday night and this morning was not there anymore. In the meantime none has touched my Mac.
I have rebooted the Airport Extreme via Utility Airport with no success.
Can anyone help me, please?
Thanks,
Francesco.

FBF-CH wrote:
My external HD connected to the Airport Extreme antenna has disappeared from the Finder.
If a network drive disappears, you'll have to mount it again by hand. Do you see your AirPort Extreme in the "sidebar" of a Finder window? If so, select that to start the mount process.

.mac account disappears from Mac mail

Often I will go to my Mail app and the .Mac Account is no longer displayed. If I quit mail and reopen, it and its folders stored there at .Mac will be displayed.

My wife has a sub-account on our MM family pack subscription and had this issue: occasionally mail on her iPhone would appear briefly in the iPhone inbox, then disappear from the list. It never showed up in Mail.app at all. (I have the master account on this family pack and haven't had this issue… knock on wood.)
I was also a recipient on some of those mails -- but if I forwarded them to her she still didn't get them. I had to copy the text out of the messages and paste into a new mail. That worked. So it seems there's something in the mail header (perhaps?) that causes this… yet the mails have not all been from the same person / address. In fact, mail from person "A" might do this disappearing thing today, yet mail from the same person "A" might work fine tomorrow. It's that sort of multi-variable, intermittent problem that's very hard to pin down.
I tried changing her password -- to guarantee that only her known clients were logging in (no lurking POP mail readers that she'd forgotten about). No effect. Then I tried turning off her junk filters, both local and online at MobileMe (thinking maybe some rule was out of control -- deleting random messages, rather than filing them as junk). No effect (other than a lot of complaints from her about junk in her inbox, of course).
Finally, she suggested that maybe it had to do with MM push services -- since it only happens on the iPhone, not on her Mac. We turned off push on her iPhone and voila! It seems to have fixed the issue.
I haven't found anyone else who's connected this with data push on the iPhone. I'd be interested if other folks who try this as a solution would see if it works for them and post results here.

Mail disappears from Mac account inbox

Hi folks.
I'm a relative apple newby. I have 2 mail accounts, 1 of which is an apple mail account. On 2 occasions now all the mail in my mac inbox has just disappeared. Any ideas how to retrieve them and why is this happening?
Tks in advance

My wife has a sub-account on our MM family pack subscription and had this issue: occasionally mail on her iPhone would appear briefly in the iPhone inbox, then disappear from the list. It never showed up in Mail.app at all. (I have the master account on this family pack and haven't had this issue… knock on wood.)
I was also a recipient on some of those mails -- but if I forwarded them to her she still didn't get them. I had to copy the text out of the messages and paste into a new mail. That worked. So it seems there's something in the mail header (perhaps?) that causes this… yet the mails have not all been from the same person / address. In fact, mail from person "A" might do this disappearing thing today, yet mail from the same person "A" might work fine tomorrow. It's that sort of multi-variable, intermittent problem that's very hard to pin down.
I tried changing her password -- to guarantee that only her known clients were logging in (no lurking POP mail readers that she'd forgotten about). No effect. Then I tried turning off her junk filters, both local and online at MobileMe (thinking maybe some rule was out of control -- deleting random messages, rather than filing them as junk). No effect (other than a lot of complaints from her about junk in her inbox, of course).
Finally, she suggested that maybe it had to do with MM push services -- since it only happens on the iPhone, not on her Mac. We turned off push on her iPhone and voila! It seems to have fixed the issue.
I haven't found anyone else who's connected this with data push on the iPhone. I'd be interested if other folks who try this as a solution would see if it works for them and post results here.

User accounts disappeared from Mac Server

My company uses a Mac Server OS X v10.7.5 which we store all our files on and staff connect to it using a mapped drive (B:). This afternoon we stopped being able to connect, we rebooted the server like we normally do, however, when it came back online all of the user accounts have disappeared leaving only our admin account!
All of our files and folders are still there, it's just the user accounts used for accessing these folders that seem to have disappeared.
Coincidently, the + sign under the Users section is greyed out in server.app so I'm having to use Workgroup Manager to add new users. I've tried doing this for myself and given my user account access to the folders that I need however, when I try to map the B: it doesn't recognise my server credentials any more.
Basically, at the moment, no one can access any files or folders so I'm really hoping that someone has an answer on how to either restore the missing user accounts (if that's possible) or how to set up the user accounts so that we can access the files again.
Thanks in advance for any help.

From what I found out it was to do with corrupted Open Directory file, if you've previously archived the Open Directory (through Server Admin) you can restore a previous version or, as we had to do, copied all the server files to an external hard drive and restore from Time Machine, we did it for a point a week ago when it was working and all the user profiles came back.
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After it had done this all the user profiles were restored with passwords and groups etc..., if you do remove and restore the files then you may need to re-do any file access permissions but other than that it should be back to how it was before.
Hope this helps and I've explained the process ok.

H.264 movies from Mac show garbage on PC

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I'm sorry to have posted a needless question.

Mail disappearing from Mac Mail - iCloud

There has been a fair few people with the same problem. I have reset my Apple Id password and this seems to have solved the problem.

smart mailboxes are not actual mailboxes. they are saved searches. if something disappears from it it means that the original was deleted from whatever mailbox it was sitting in. For example, it could be that those messages were in trash and you have your trash emptied periodically.

External Hard drive has disappeared from fcpx

Hey guys,
I know this question comes up a lot so I'm suprised to say I've failed to find any fixes on other threads. Many people having the same issue say that the drive shows up temporarily in the events and project source windows but then disapear, this is not the case for me it just doesn't show up at all. I've put 90% of my fcp projects and events onto one external hard drive which is working fine with everything but fcp, it even recognises it if i want to import from the drive. It has been working fine up until now which is weird as I've not changed anything on it recently, the only thing I've changed is I used a client's drive to do the latest edit, which worked fine!
Someone must have found a solution to this problem by now, it's causing me a lot of trouble as I've got deadlines to meet and I'm being put out by what seems to be a ridiculous little bug, surely apple would have got onto a fix for this by now?? In the mean time all and any suggestions welcome!

llyrhughes wrote:
Hey guys,
I know this question comes up a lot so I'm suprised to say I've failed to find any fixes on other threads. Many people having the same issue say that the drive shows up temporarily in the events and project source windows but then disapear, this is not the case for me it just doesn't show up at all. I've put 90% of my fcp projects and events onto one external hard drive which is working fine with everything but fcp, it even recognises it if i want to import from the drive. It has been working fine up until now which is weird as I've not changed anything on it recently, the only thing I've changed is I used a client's drive to do the latest edit, which worked fine!
Someone must have found a solution to this problem by now, it's causing me a lot of trouble as I've got deadlines to meet and I'm being put out by what seems to be a ridiculous little bug, surely apple would have got onto a fix for this by now?? In the mean time all and any suggestions welcome!
Have you used it successfully with FCP X before? What content has changed in the drive?
I am assuming you checked all the usual things, but still it is worth taking a look again:
1) Is it formatted as Mac OS extended?
2) Did you add any folder titled something that may be thought of as a camera (folders like "AVCHD", "Private", "DCIM", "Video", ....)
3) Are the folders called exactly "Final Cut Events" and "Final Cut Projects" and located at the ROOT of the drive?
It seems like you know all this, but still there may have been something you missed.

External HD (WD Passport) disappeared from Mac - shows up on PC

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