USB Flash Drive Not Mounting After Mavericks Update

I fixed my issue by removing /System/Library/Filesystems/ufsd.fs/

the reason behind my move was

http://kb.paragon-software.com/paragon/include/templ/object2.jsp?catId=2124&objI d=6879&statId=1732877&foLang=en

I too am having this odd behaviour. I have three USB thumb drives.

4gb Kingston

4gb Sandisk

16gb integral

All three work perfectly fine on a Windows PC

The 4gb ones mount ok on my MacBook Air and my Mac Pro. The 16gb one does not mount or even show in disk utility which is rather annoying as I need it to do so in order to get boot camp running.

Maybe this is a ploy by Apple to prevent me from being able to get boot camp running as it demands a USB drive larger than 4gb.

I have followed all of the possible solutions on this thread apart from the ones requiring the installation of third party software - I am not willing to do that in order to get something which should "just work".

Has anyone at all heard anythng back from Apple on this?

Hi guys,

I was having the same troubles and I think I just solved the problem. I hope this helps some of you.

The problem was that my external Toshiba hard drive (NTFS formatted) was not mounting anymore.

On the other hand the usb stick (FAT32 formatted) was fine.

So, I now believe the problem are the NTFS external disks, When I purchased the Toshiba I could find on it the program Tuxera NTFS that allows one to write on NTFS disks. There was the problem. Apparently something went wrong during the upgrade to Mavericks and Tuxera was no good anymore.

Go on System Preferences -> Tuxera NTFS (or similar program)

Now you should be able to disable it. There should be a box to tick in order to do that. If you see all the voices are greyed out you need to click on the lock on the bottom left corner "Click to lock the make changes" and you are asked for root password.

Now you can see the driver in the finder (it is mounted!!) but since you de-activated the NTFS program, you cannot write on it anymore.

But since Tuxera NTFS was on the disk, now I could see the .dmg and install it again

Now it seems fine

Allow me to say that all this was absolutely ridiculous for two things:

- I installed Mavericks in June, This thread (and others) was opened in October 2013. When I installed Mavericks there was no clear warning from Apple about any of this troubles.

- It is just unacceptable that Mac still can't natively write on NTFS without installing additionaly softwares that then are not clearly recognized by Apple when is time to design updates.

Your "solution" was posted already in this thread nearly 3 months ago on page 3.

Apple is not responsible for faulty software that they didn't create, so why expect a warning from them?

And why are you surprised that a proprietary file system, that was created by Microsoft, isn't natively supported? Seems fairly obvious. Do you have a similar post in the Microsoft forum about Apple's HFS+?

I think that there are 2 issues at play here. I do not have any NTFS formatted USB sticks, but I keep having problems mounting them since I have installed Mavericks. I tried all possible solutions mentioned in this thread but none of them work.

The reset of the SMC made it possible again to mount the USB stick, but as soon as I tried to copy data to it the USB stick was ejected and I was not able to mount it again. After that I tried using the sticks on several other devices (Macbook with Snow Leopard, Windows laptop, Pioneer CDJ-2000) and they where all able to mount and use the USB stick.

So I am starting to believe that this is a real Mavericks issue

Same problem as the original post, Mavericks does not mount any of my USB thumb drives.

It does not show up in Disc Utilities

It does not show up in Finder.

I can't "Go on System Preferences -> Tuxera NTFS" since I never had Tuxera not NTFS-3G.

Clearing SMC did not work either.

I got a whole batch of USB drives (20) that did not read on 4 out of 5 Mac's I inserted them into. 2 were Mavericks (OS X 10.9), and 3 were Mountain Lion (OS X 10.8). The one that did read it was a Mavericks machine. The rest did not even read them through Disk Utility ⚠.

The good news for me was that Kingston (the manufacturer) was very helpful and is replacing them all. It appears that certain "builds" are not compatible. With the help of the mfr rep, I discovered there is a (very tiny) number on each drive that indicate the build version, and for some reason that I'm not 100% clear on, the ones I received aren't read on the machines I tried.

While this is the good news, the bad news was bad. I needed those USB drives for students in a class I teach & had to just forget about giving them the drives, as I'd ordered them under the wire without any time to deal with the replacement. My bad - in retrospect I know better than to make orders for such a need so close to the needed date.

As a footnote, my issue may have been different, but after much searching, this was the closest I found, and I hope that this info will help another person who, like me, purchased some USB flash drives that just don't show up on your Mac.

I was baffled why my thumb drive wouldn't show up on my desktop after installing Mavericks.

I found the simple solution was to open Finder, click on preferences.

The window gives you the opportunity to show these items on the desktop.

Hard disks

External disks

CD's, DVD's and iPods

Connected servers.

If not checked, you need to check these

boxes, because they are not checked by default.

Yes, that has been brought up before but did not fix anything on my end.

I have them all checked and none of my USB flash drives pop up. Even if

you did not have those checked a flash drive would pop up in disc utilities

but it's not showing up there either.

All other USB devices do show up.

Ben Lomond - Yes, yours is a relatively simple issue that trips up many Mac users, and your answer may help someone, but this is a different issue.

The only solution in my case was to exchange the 20 Kingston drives I bought for new ones (and Kingston was very helpful with this).

Thanks!

Just came back from store with 4 different brands of Usb ranging from 4GB to 16GB and not one of them will load on Mavericks Finder nor do they appear in disc utilities. It's like nothing was ever plugged in. I tried every single USB port and also did the SMC reset with no luck at all.

Those same USB ports have no issue reading my external drives, so I have no clue what this could be.

OzziesMac - This sounds entirely like a "Apple Store Genius" issue. I hope you're still under warranty, or have the AppleCare Protection Plan, in which case, a phone call might get you where you need to be.

Sorry you're having those issues!

Extended Warranty Plan has expired, and I would hate to have to take my 27" iMac to the local Apple Store, if one calls 35 miles away local.

I use Cruzar and no issues on my USB3 ports and hub.

Yep, I have a Cruzer one in my pile and it also did not work.

I switched back to Mountain Lion and everything is good again.

I hope Yosemite fairs better than Mavericks did for me.