Can't find Toshiba portable external hard drive in finder after I upgraded to Mavericks

Anyone know how I can be able to see my external hard drive? I've been using it before and was able to see it until I upgraded my OS to Mavericks....Now, I cannot find it in the finder but I can see it in the disk utility however, my mac does not allow me to do anything on it...I don't want to reformat coz I have important files in my hard drive...PLEASE HELP! Thanks...

Yup. Still not there...only my Mac HD came out...my WD external HD can be detected coz it's the one I'm using for time machine back-up but my Toshiba external HD is still not present/ mounted in finder and I still cannot choose it in disk utility even if it is listed there...

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External Hard Drives not Mounting after Yosemite Upgrade

I've just upgraded to Yosemite, and none of my external (USB) hard drives are mounting (they don't even appear in Disk Utility).
Any ideas?

MacBook Pro 2009. 250 SD, HD 8Gb Ram.
I have had this issue for about a year...with no resolve!
Apple and the User community have not been able to solve issue.
I have had to work around it since the Oct 2013 Mavericks upgrade which “killed” (rendered unmountable) both my USB and Optical drives.
Hundreds of replies and remedies have not corrected my issue. Hundreds of replies stating that if there was a global issue it would of been fixed by Apple, not true. And dismissive replies stating that there must be a hardware issue are very discouraging.
So now, hoping to help the voiceless masses, I'm forced to share my experience.
As I stated, I have been having the issue since one of the Mavericks upgrades. The upgrade rendered externally attached drives unmountable...They are all seen in Disk Utility. They are just not mountable. Regardless of the flavor of the disk format, either Mac or PC, they are found, seen and refuse to mount. I can see them using Terminal commands, I can see them in System Report. I can reset all the memory I want...turn it off, reset, sleep, turn on, restart...NOPE...And the optical drive takes in disks but ejects them after an attempted mounting. Keep in mind, there are no physical issues with either USB or optical drives.
So now...I have had enough and need to correct the issue or buy a new equipment - starting to get into software development and need working equipment!!!
For the past month, I have been visiting the Apple store to assist in my issues...Back Story: I'm an IT Field Tech for the largest department store in the country and I have the good fortune of dropping in the Apple store anytime I want...The Geniuses booted the MB with a bootable image of Mavericks, and the USB and Optical drives WORKED fine...So, after I had stumped the Geniuses with my problems, we agreed that we would attempt to format and re-image the MacBook...Fine, do it, it's backed-up, how you ask? - Via my wireless My Book Live 3T drive, which only took 24 hours to backup, AKA Time Machine!
Great news! The re-image of Mavericks proved to work! I WAS able to mount external drives attached! How is that possible? Don't know, don't care! It just worked! So happy!
But wait! I then took the laptop home. Connected to my WiFi, to update Mavericks to the latest version...Good so far! Then it came time for a Time Machine restore, AKA Migration Assistance restore...So, I proceeded to migrate data back to my MB via wireless drive, good so far, booted in Migration Assistant, and I chose to restore everything except the network files, thinking that may be an issue...22 Hours later, the MB migrated without issue...all apps and personal files had migrated! YAY!
BUT NOW THE USB AND OPTICAL DRIVES FAILED TO MOUNT!!!
Great now what? I know, I will just re-image and start again...WAIT, I don't have a Mavericks Install Disk, no problem, I will just create a bootable USB drive with the Mavericks Install Image I downloaded onto my MB this month...NO YOU CANNOT, because you have no use of the USB drives!...And, Apple stopped making OS CDs back in 2009...Oh, and that wouldn't of done me any good, because the optical dive was unusable, anyway!
SO, back to the Apple store with my head hanging! At this point, Yosemite came out the previous Thursday, so no more Mavericks images, great! Perhaps the new OS will alleviate my nightmare!!!!...So, they re-imaged my Mac with Mavericks, drives worked again! SO, I took my MB home and attempted to download the new OS, Yosemite...which only took 2 days due to the amount of traffic on Apple's servers!...Anyway, Yosemite finally installed without out issue! Drives still worked! And so, I shutdown and restarted the system...No issues, USB and optical drives worked beautifully! Yay, Yosemite!...Fixed all my troubles!!!...Not so fast...
And so, I, again, attempted to do a Time Machine restore, via WiFi, this time it took 24 hours to restore...AND it worked! All apps and personal files transferred without issue, So happy! Put the laptop in Sleep and left it home and went to work! Came back from work, tested the system without issues. Rebooted...USB and Optical drive are NOT MOUNTABLE!
So now, what is the file that the restore keeps pushing to my MB that kills the USB and optical drives?
I would just stop restoring from a Time Machine backup, but the only way to get into the TM image is to use Migration Assistant. I cannot view the date in time of the image in TM's Star Wars time line. So, I'm forced to back up everything from the image in Migration Assistance. Not sure that it being an encrypted image has anything to do with it...
...Regardless, what is being “restored” to the MB that continues to configure the OS in such a way that makes all external drives unmountable...keep in mind, my external keyboard, hub and mouse are usable via USB.

Portable external hard drives

Can anyone recommend a portable external hard drive to run a bootable OS from? I've been looking at the following drives:
LaCie Rugged All-Terrain Hard Disk
FireWire 800, FireWire 400 & Hi-Speed USB 2.0
250GB 5400 rpm
and
OWC Mercury On-The-Go 200 GB 7200rpm
FireWire 800/400 + USB 2.0 2.5" Portable SATA Storage Solutions
The OWC one is slightly more expensive and smaller because of the hard drive rpm but is that a real concern? Will there be much of a difference between 5400 rpm and 7200 rpm? I want the drive to run OS X as smoothly and as fast as possible.
Thanks for all your help

LaCie Quadra FW400, FW800, USB 2 & sata contains sata internal drive 7200 rpm
Vantec FW enclosure $54.00 model called NexStar 3 2xFW400, USB2 and sata you buy a sata hard drive your choice and easily install it inside Vantec. Works well with Leopard 10.5.2

External hard drive not recognized after OSX Mavericks

My Toshiba external hard drive worked flawlessly before I upgraded to Mavericks, but now I cant access the disk. It doesnt show up on the desktop but it does show in disk utility. What do I do?!

This isn't my question, but I'm having the same problem (with a Western Digital) and thought I'd share a screenshot of disk utility for comparative purposes.
Also, Mavericks isn't allowing me to access Bootcamp

Toshiba 500GB USB 2.0 Portable External Hard Drive Owner's Manual

Hello,
Looking for an owner's manual for my Toshiba 500GB USB 2.0 Portable External Hard Drive. I've checked online and on Toshiba's website. Can anyone help?

Hi,
If you are going to use it in MAC, what i know is you need to format it to MAC extended journaled
try this link .
hope this will help you.
*********Click on Kudos if it helped you. Thanks! ***********

IMac Finder cannot see external hard drive but Disk Utility can

I have a WD external hard drive and it has been attached to my iMac for a year or two. About two months ago I upgraded to Lion 10.7.5 and hard drive still worked. Then suddenly about a week ago the iMac no longer sees the external hard drive in Finder.
I have connected the hard drive to the iMac with different USB cables and into different ports and it makes no difference so deduce there is no issues with the cables or the ports. I have connected the hard drive to an old Macbook and it can see the harddrive and read some of the info but I really need the hard drive attached to the iMac as I store all my music and photos on the external hard drive.
I read another thread and someone asked if you can see the hard drive in Disk Utility. I tried this and Disk Utility can see the hard drive.
What does this mean? Any suggestions as to how to get the iMac to see the hard drive so I can access the data on it?
I dont really know how Disk Utility works therefore if that is any help to me.
thanks

Open the Finder.
From the Finder menu bar click Finder > Preferences then select the General tab.
Make sure: External disks is selected.

Why can't I drag my files in finder to an external hard drive?

I'm trying to drag my files from finder to an external hard drive--I just get the universal "do not" symbol. How do I do this?

1.youd need a program like PARAGON to write to a NTFS drive from your Mac.
2. IF you can offload that data onto your PC or other computer, THEN format same in Mac OSX extended journaled, you can just drag and drop files to it.
3. To show the HD on desktop go to Finder > preferences > General > check on "external disks" and "hard disks"
4. The "EASY" option really is to get another HD for use with your Mac, unless of course you need specific files off that drive ON your Mac.
$70 for a good cheap quality 1TB external USB HD.
5. FAT32 and (better option>) EXFAT can read/write to BOTH Mac and PC (however time machine will not use either)
6. See mac format below, HFS+ i.e. "mac osx extended journaled"
FORMAT TYPES
FAT32 (File Allocation Table)
Read/Write FAT32 from both native Windows and native Mac OS X.
Maximum file size: 4GB.
Maximum volume size: 2TB
You can use this format if you share the drive between Mac OS X and Windows computers and have no files larger than 4GB.
NTFS (Windows NT File System)
Read/Write NTFS from native Windows.
Read only NTFS from native Mac OS X
To Read/Write/Format NTFS from Mac OS X, here are some alternatives:
For Mac OS X 10.4 or later (32 or 64-bit), install Paragon (approx $20) (Best Choice for Lion)
Native NTFS support can be enabled in Snow Leopard and Lion, but is not advisable, due to instability.
AirPort Extreme (802.11n) and Time Capsule do not support NTFS
Maximum file size: 16 TB
Maximum volume size: 256TB
You can use this format if you routinely share a drive with multiple Windows systems.
HFS+ ((((MAC FORMAT)))) (Hierarchical File System, a.k.a. Mac OS Extended (Journaled) Don't use case-sensitive)
Read/Write HFS+ from native Mac OS X
Required for Time Machine or Carbon Copy Cloner or SuperDuper! backups of Mac internal hard drive.
To Read HFS+ (but not Write) from Windows, Install HFSExplorer
Maximum file size: 8EiB
Maximum volume size: 8EiB
You can use this format if you only use the drive with Mac OS X, or use it for backups of your Mac OS X internal drive, or if you only share it with one Windows PC (with MacDrive installed on the PC)
EXFAT (FAT64)
Supported in Mac OS X only in 10.6.5 or later.
Not all Windows versions support exFAT.
exFAT (Extended File Allocation Table)
AirPort Extreme (802.11n) and Time Capsule do not support exFAT
Maximum file size: 16 EiB
Maximum volume size: 64 ZiB
You can use this format if it is supported by all computers with which you intend to share the drive. See "disadvantages" for details.

Toshiba 1TB USB 3.0 Portable External Hard Drive

I was thinking about buying a Toshiba 1TB USB 3.0 Portable External Hard Drive at my local Wal-mart. Does it have a fan to keep the hard drive cool or not?
Prince Applejack
Toshiba Satellite Laptop C855D-S5340 Windows 8.1 64-bit

Hi,
If you are going to use it in MAC, what i know is you need to format it to MAC extended journaled
try this link .
hope this will help you.
*********Click on Kudos if it helped you. Thanks! ***********

Issues with Portable External Hard Drive (500GB)

I recently purchased the 500GB Toshiba-branded external hard drive in blue from my local Wal-Mart. It has been working fine for the past few months, but when I plugged it into my computer this morning, it didn't light up the LED and I couldn't feel the disk drive spinning as normal.
I tried to call Toshiba support, but all they did was ask me if the cord was damaged (it's not, at least not in any obvious fashion), and then tell me that it's the drive itself and to start a warranty claim. When I asked about all the data I already have on there (all of my family pictures and my music collection), they basically said tough noogies, they can't do anything about it.
I am going to try and plug it in at home and see if it's just this computer, but it's worked fine on this computer dozens of times. Does anyone have any advice on where to find a cord that would work, or other possible solutions? I absolutely CAN'T lose the data that's on here.
Any help is much appreciated. Thank you in advance!
Justin

Hi
I too have an issue with my portable 500gb Toshiba hard drive. No LED lit up when plugged into the USB port (Ive tried them all). I have lots of data on there that I recently wanted backing up and uploaded from my laptop whilst that was being repaired. I too believe it may be the connector because it now seems a littel bit loose. Im no technogeek so can someone please advise how I remove the drive from the portable device and where I can get another case from...or even just retrieve the data and then get rid?

Portable External Hard Drive / Steroids for MacBook Pro

Hi. I recently purchased a (Non-Retina display) 13-inch, Mid 2012 MacBook Pro.
Processor: 2.5GHz Intel Corei5
Memory: 4GB 100 MHz DDR3
Graphics: Intel HD Graphics 4000 384 MB
Software: OS X 10.8.2 (12C54)
I love my new laptop, but am not exactly tech-savvy. I'm pretty computer illiterate, so I don't exactly know the difference between USB 2.0/3.0 or Firewire 400/800. I know what I want to do, but I'm not sure if it's possible. Basically, even though I love my MacBook, I'm curious if I can love it even more and want to know how to max out its potential. Eventually, I want to:
A.) install the maximum amount of memory and internal hard drive capacity possible.
B.) get the largest, fastest, yet PORTABLE, external hard drive possible. I've got a ton of music in iTunes, and I want to get my huge DVD collection digitalized. Something in the TB range. I keep reading mixed reviews on WDs and Apple's Time Capsule.
Any help will be much appreciated,
Mike

Hi Myke,
If you want to shop for a bigger hard disk or more memory, I recommend you go here: OWC / MacSales
Their prices are about as good as you're going to find, but more importantly their Mac support is superior, especially if you are not completely confident in knowing exactly what you need to buy. Macs are particular about memory but if you buy from OWC they know what to supply and will guarantee it will work.
The ultimate upgrade is an internal Solid State Drive but these get expensive in a hurry.
The Time Capsule is not a portable external hard disk. If you want an external portable HD, shop for one at OWC.
I have heard mixed reviews on WD also, but the same mixed reviews apply to all consumer grade hard disks these days, without exception. Basically, they are all cheap. Consider them disposable, which means you should always have a backup. Time Machine is included with your MacBook Pro and is as easy to use as plugging in an external hard disk. Time Machine does the rest. Use it! There is no excuse not to.
USB is preferable to FireWire these days.

USB 3.0, fast, portable, external hard drive for HD video editing

I'd like a 1TB or 2TB, bus-powered, fast, portable, external hard drive for HD video editing on MacBook Air i7 (2013).
Any recommendations?
Thanks!

best options for the price, and high quality HD:
Quality 1TB drives are $50 per TB on 3.5" or $65 per TB on 2.5"
Perfect 1TB for $68
http://www.amazon.com/Toshiba-Canvio-Portable-Hard-Drive/dp/B005J7YA3W/ref=sr_1_ 1?ie=UTF8&qid=1379452568&sr=8-1&keywords=1tb+toshiba
Nice 500gig for $50. ultraslim and perfect
http://www.amazon.com/Toshiba-Canvio-Portable-External-Drive/dp/B009F1CXI2/ref=s r_1_1?s=electronics&ie=UTF8&qid=1377642728&sr=1-1&keywords=toshiba+slim+500gb
2.5" USB portable High quality BEST FOR THE COST, Toshiba "tiny giant" 2TB drive (have several of them, LOT of storage in a SMALL package) $117
http://www.amazon.com/Toshiba-Canvio-Connect-Portable-HDTC720XK3C1/dp/B00CGUMS48 /ref=sr_1_4?s=electronics&ie=UTF8&qid=1379182740&sr=1-4&keywords=2tb+toshiba
*This one is the BEST portable external HD available that money can buy:
HGST Touro Mobile 1TB USB 3.0 External Hard Drive
$75
http://www.amazon.com/HGST-Touro-Mobile-External-HTOLMX3NA10001ABB/dp/B0062FZ2WS /ref=sr_1_1?s=electronics&ie=UTF8&qid=1379185002&sr=1-1&keywords=hitachi+extern a l+hard+drive
Most storage experts agree on the Hitachi 2.5"

After I installed Lion, my MacBook Pro can no longer detect my external hard drives or my USB flash drives. What should I do?

After I installed Lion, my MacBook Pro can no longer detect my external hard drives or my USB flash drives. What should I do?

And me -- My Mac at work running Snow Leopard reads the drive normally. My home Mac (on Lion) can't even find it....
Yet another Leo let-down.....

What brand portable external hard drive should I buy?

Can anyone suggest what brand of portable external hard drive would be a good one to buy for storing my iTunes music and maybe photos on. My Macbook is now getting stuffed full of music and as I have an 80gig iPod I will need to move my iTunes on to a larger drive to make the most use of it and I probably need at least 100gig. I can get hold of the Lacie Porshe design ones from a local apple retailer, or order something else from the Apple store...Crossfire maybe? I want it to be really plug and go, be ready formatted for Mac, and be bus powered and fully portable.
I would be grateful for any advice.

I like my Acomdata too. It's 320GB and in this aluminum case...I call it "the ingot" because it's big and heavy and metal. However, it's not a treat to take places because it's so big and heavy. I'm thinking about getting an OWC Firewire drive based on a 2.5" drive because of the need for an external drive that's highly portable.
However, don't go the USB2 route unless you have Firewire on the external drive too. USB2 requires a lot of intervention from the CPU that Firewire doesn't. You will NOT be able to vidcap to a USB2 drive. However, no probs vidcapping to a Firewire drive. I don't know why Apple is moving away from Firewire...it's a superior system. If they moved to eSATA I would understand, but that's not where they are going. It's probably a cost thing, darn it.
Message was edited by: S. Michelle Klein-Hass

Why can't I see my external hard drive, Intel iMac / 500 GB, G-Drive

Why can't I see my external hard drive? I have a new iMac, Intel based i5, running Lion (2-3 months old). I have a 500 GB G-Drive external hard drive that has showed up when connected to my iMac for the past 2-3 months. Now it's gone. It's NOT visible when using Disk Utilities. I have all of the radio buttons chosen in the Finder Preferences. I've unplugged and replugged in the drive, have switched the cable ports and have switched firewire cable. The G-Drive powers up and whirls, so I don't believe the problem is with the drive. Yes, I set my Preferences to make sure ALL disk types are visible. I've restarted my iMac on a number of occations. I rest my SMC by totally unplugging my iMac for a minute, then plugging it back in. Any suggestions?

Unplug the HD, Zap the PRAM, reconnect the HD, power it up, and see if that fixes the problem. If not, then maybe the HDs bitten the dust. Try on another computer to verify.

MacBook won't detect Toshiba 1T external hard drive

I just upgraded my operating system on my MacBook Pro and now my laptop won't detect my Toshiba 1T external hard drive, even though I've been using it before. Any ideas?

Adam513, turned out the latest operating system doesn't read Microsoft formatted external hard drives the way it used to. I had to purchase a new external hard drive, them find an apple computer with an older version operating system so I could transfer my files to the new external which is formatted for Mac. The new external works fine and once I have all the files transferred, I'll reformat my old external hard drive. Took me and the guy at the Genius Bar a while, but we finally figured this out. Hope this helps!

Can't find Toshiba portable external hard drive in finder after I upgraded to Mavericks

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