Seagate 3TB Go Flex won't mount

Its a Thunderbolt adaptor desk drive paritioned into 16 partitions. It mounts fine on my iMac 10.7.5, 3.4 GHz, but when I switch it to my MacBook Pro, 10.8.2, 2.6 GHz, it won't mount. Error message says its unreadable. But it does appear as "connected" in the System Profiler, and appears as one disk icon in Disk Utility, but not the 16 partitions.

Hmm, I followed the suggestion, but it didn't resolve it. I ran Disk Utility reapir off the iMac and there weren't any errors found on the drive. When I switch the GoFlex to the MacBook Pro, it appears in Disk Utility as the main drive, but no mounted partitions yet, same issue. And I can't do any repairs to that drive icon in Disk Utility from the laptop.
Any other ideas?

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Seagate 500GB External HD won't mount-help!

My external Seagate FreeAgent 500 GB hard drive changed its partition type to nothing. . .
here is what it looks like in Terminal:
imac-users-imac:~ imacuser$ diskutil info /dev/disk4
   Device Node:        /dev/disk4
   Device Identifier: disk4
   Mount Point:
   Volume Name:
   Partition Type:
   Bootable:           Not bootable
   Media Type:         Generic
   Protocol:           USB
   SMART Status:       Not Supported
   Total Size:         465.8 GB
   Free Space:         0.0 B
   Read Only:          No
   Ejectable:          Yes
   OS 9 Drivers:       No
   Low Level Format:   Not Supported
By contrast, one of the internal drives looks like this:
imac-users-imac:~ imacuser$ diskutil info /dev/disk2
   Device Node:        /dev/disk2
   Device Identifier: disk2
   Mount Point:
   Volume Name:
   Partition Type:     Apple_partition_scheme
   Bootable:           Not bootable
   Media Type:         Generic
   Protocol:           ATA
   SMART Status:       Verified
   Total Size:         25.5 GB
   Free Space:         0.0 B
   Read Only:          No
   Ejectable:          No
   OS 9 Drivers:       Yes
   Low Level Format:   Not Supported
Any help is appreciated. I know I should have been backing up this drive.
I have over 10 years' worth of freelance work, plus 100s of reference photos,
websites, resumes, portfolios on it. I have been exploring testdisk, photorec,
Data rescue, Disk Utility (which sees the drive, and gives me this message:
Verifying volume “disk4s2”
Error: The underlying task reported failure on exit
1 non HFS volume checked
Volume needs repair
The thing is, I have searched for individual files, and I can see the paths to them. However, I cannot mount them or send them
to another drive. I also receive this message in Terminal:
Error (-9958) encountered attempting to verify/repair disk4
Message was edited by: Michael Brugh, spelling correction

Your filesystem appears to be damaged beyond what Apple's Disk Utility is willing to repair.
Frankly it's insane to have one copy of 10 years worth of files you think are important, with that out of the way.
If you really need the data and want it back with the most likely chance of success of reading it all stop using it right now and contact a drive recovery company. They have the knowledge & expertise that could save data from a disk that may have a very limited amount of life left - sometimes falling disks will stop reading as physical damage gets worse. It will be expensive, but it's the best option they should have clean rooms for disassembling & checking it is operational. They may also know what different noises may mean - any abnormal sounds are clues to what the disk is doing (or not doing).
Another thing to consider – the external case or USB port, cable or power supply could be failing. Removing the disk & installing into another case may be a possible way to see the disks state. The age of the disk will dictate the type of case you need (SATA or ATA). Also see if another Mac mounts it - the OS could be failing not the disk.
These are the risks that your own attempts to recover or repair.
Causing more damage to the HD until it becomes totally unreadable, running several recovery or repair tools may simply cause more damage.
A physical failure can simply become fatal to the ability to read any data.
Repair tools can cause files to be lost or can recover many duplicates of data without the file names or folder structure - it can make sorting them impossible or very time consuming.
Risk damaging or altering all other connected disks … tools like photorec & testdisk are not forgiving of typo's you can easily be working with the wrong disk. Remove ALL the disks that are cannot afford to be lost (it sounds extreme, but you are already in a bad situation don't make it worse). Device names are confusing, verify twice before doing anything.
You need another disk to recover data onto this needs to be larger than the 500GB drive - you will get duplicates & may need to 'image' the entire drive before attempting repairs on the image (to limit more damage to a mechanical issue). Several disks may actually be required. ddrescue is a free tool to image failing disks.
Time is another important factor, recovery or repair can be very a slow process & should also not be rushed, spend time reading manuals & guides before using tools that are new to you. Also read other sites that discuss the tools.
It's unclear what the actual issue here is & what options you would like to take. You could just try every utility you can find, but that will cause the disk to die if it is having mechanical issues. You need to be methodical & log what info you have.
Are you really on a G4 Power Mac with 10.4.11? You will need older versions of tools like Disk Warrior to handle the disk format correctly, otherwise they may fail or cause other damage.

Seagate Barracuda 7200 160gb Won't Mount

I have a Seagate Barracuda 7200 160gb from a PowerMac G5. It spins up just fine. Sounds normal but is not mounting. I have used a Manhattan USB Dock, A Universal USB Drive Adapter. I had it mounted once externally and ran Disk Repair on it, and it still would not mount in the G5. I even took it to a local data recovery shop and they can't see it either. I've read a lot online about possibly replacing the PDB Circuit Board or the BIOS chip. I've also ran Disk Warrior - doesn't see it.
Is there a way to check what is actually the issue? BIOS, Board, Corrupted OS, etc.?
Tomorrow I'm calling Seagate to see if they can do anything. Basically I'm trying to get the data off of it for someone, then get a new drive and install then migrate assist if possible.
Thanks for any help

why would I need another drive.
To scavenge the board.
You can't just slap any old board on there.
The same model and the same firmware are the general requirements for board swaps to gain access to data....
Why would it need this?
The data rate limit is needed on retail drives to allow proper communication with the G5 controller.
The G5 controller and Seagate retail drives have a nasty history. One, the limit jumper is needed, but NCQ was enabled by default, and later, so was SSC. Neither of these features is compatible with the G5 controller.
It is the drive that was shipped with it when he bought it brand new from Apple.
Hmmm, my ESP wasn't working as well as it usually does.....
If the drive is OEM Apple shipped, then it has Apple firmware which changes jumper requirements.

500GB Seagate drive in an external FW enclosure won't mount

Hi-
I have the latest MacPro with one internal HD 250 GB. I found a great deal on a an ATA drive by Seagate 500GB and bought an external FW enclosure, as I've done many times in the past with smaller drives 160GB, 40GB and so on.
I connected everything and it won't mount. This case says it will handle larger drive sizes. I swapped an older drive from another case and it worked fine. Is there a step I'm missing, or do I have a bad drive?
I'm want to use the 500Gb for FCE editing.
Thanks,
Anne Z

Unfortunately, all cases are not made equal. Depending on the chipset used in the external case, it may not be compatible with your 500GB drive. Some chipsets can not handle that big of a drive. I have one firewire drive that can't handle a 250GB drive, but it can a 200GB drive. This seems to be your case since you are able to put a smaller drive in the case and it works. You might want to see if you can return the case and find one that specifically states it can handle a 500GB drive.
Glor

Seagate drive GoflexD won't mount.

Wouldn't mount on a PPC iMac (circa 2006 running 10.5.8) and won't mount on my new iMac either. Drive shows up on "about this Mac" under USB (3.0 SuperSpeed bus- FA GoFlex D esk) but doesn't show in disk utility. After many calls to Seagate they suggested a new cable and that had no effect. Eventually,they exchanged the drive and gave me a new one. The new one didn't mount on the old iMac or the new iMac. And,yes, I've disconnected and reconnected the USB cable,power supply and rebooted several times.
As I never trashed anything on the original hard drive I haven't lost any data so,I guess,I can discard the Seaflex and try another drive.
Any suggestions?

Is there any help under 'More Like This' on the right? >>>>>>>>>>>>>>>>>>>>>>

New 27 iMac won't mount my 3tb WD My Book.

New 27 iMac (10.7.3) won't mount 3tb WD My Book. It worked fine for about a month and then suddenly said it wasn't ejected properly (it wasn't ejected at all). Now my iMac won't recognize the drive. It doesn't come up in disk utilities, it's invisible.
I think the issue may have started when I restarted my iMac. First the power of the external drive wouldn't come on and now that I resolved that I can't get it to mount.
Help!

Disconnect all your peripherals, reset the PRAM
and then reconnect everything.

I have a external back-up that my iMac (10.6.8) won't mount. Is there a way to mount without intializing and losing back-up data?

I have a external back-up that my iMac (10.6.8) won't mount. Is there a way to mount without intializing and losing back-up data? I used time machine to back-up to a Seagate Go-flex hard drive. I get a message from my iMac that says it doesn't recognize this drive and wants to initialize. Hope someone can help.

Try connecting the drive to a Windows machine, then ejecting. If it won't eject properly, restart the Windows machine, and try again. Then try connecting it to the Mac.

Upgraded to Mavericks. Now External HDD Enclosure Won't Mount. Is there a fix?

Upgraded to Mavericks. Now I can't get my external HDD enclosure to mount. A little about this enclosure, as it's not the usual settup . I have four 3TB HDDs in a RAID5 settup. The most unique part is that they are formatted as a Windows NT Filesystem (Tuxera NTFS). Basically, when I set this up, I had to get a lot of info from a Windows-formatted HDD, but also be able to read/write afterwards. It's worked fine for ~ 1 year, but now that I've upgraded to Mavericks, nothing will mount. I ran Disk Utility, where I see the HDDs (I've partitioned them into four drives of varying sizes), but they are greyed out. I tried to mount them, but it says it won't and that I should run First Aid. So I did...tried to "Repair Disk," but it just gets stuck on "Updating boot support partitions for the volume as required." For over an hour it's been on that message.
So, does anybody out there have a fix? I've read several similar posts about people having a hard time mounting and, overall, dealing with external HDDs after upgrading to Mavericks. But nothing seemed to fit my exact circumstances. Lastly, I should mention that I've used both Firewire and USB connections. Both resulted in the same.
Thanks.

I can't help with specifics for your issue, but some general thoughts:
The upgrade and the disk problem may be a coincidence. It would help you if you could verify that the drive still works fine on a windows machine. If you run a windows virtual machine or have a windows pc, or a friend does, verify full functioning that way. If it still won't mount on the mac, try to copy/backup it's data onto the windows machine (maybe another external drive connected to it. You could then scrub the disk in windows, leave it unpartitioned, unformatted. Connect it back to the mac and format it as HFS+ (Mac extended journalled) and transfer the data back to it by sharing the windows machine external drive and connecting the two machines with a network cable.

External Hard Drive Won't Mount- Need to recover files

Hello Everyone,
I am hoping that one of you fine mac experts may be able to assist ~
Problem: External Seagate FreeAgent Desktop USB external hard drive
won't mount on desktop=ie: no access to my important files.. Please Help!
Details:
External seagate freeagent 500 GB Desktop USB HD ( only 2 months old)
(using for document / file backup-not as a startup disc)
on my Mac G3 350 MZ Blue & White Tower /768 ram/ running OSX 10.1.5 & OS9.2~
~
Problem: Started using the external 500 GB HD 2 months ago -with no problems-until this morning. Tried to double click to open it to access files
and got the "beach ball of death" and needed to restart.
My trusty G3 started up fine, however, the external HD was now
not showing up on the desktop as normal. I troubleshooted -by restarting,
trying different a/c plugs/ different USB ports , ran disk utility..called
seagate -not much help . Seagate said to try the HD on another mac-which I did-
a G5 tower- same problem.
~
The External hard drive will show up in disk utility, but is grayed out.
and when click "mount" same two messages keep showing:
message 1: "a disk attempting to mount as unknown has failed verification or has failed to
mount.please use disk utility to check the disk"
~
message 2- when unplugging and repluggin the usb in-and upon
restart:" you have inserted a disk containg no volumes that mac osx
can read to use unreadable volumes,click initialize to continue with the disk inserted ,click continue"
~
( I really need access to these files- and do not want to re-initialize the HD!!)
I ran Disk Utility /first aid "verify & repair , the following info came up:
Repairing disk "main backup 2007 ".
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid key length ( <<<IN RED )
Repair completed. "
~~
Though it said the repair was completed, the "invalid key length" issue
still comes up when re-running disk utility...Hard drive would still not
mount on desktop-even after restarting .
~~~~~
If there is a mac genius out there that can help?- it would be greatly
appreciated. I have tried to call seagate several times in the last several hours-
1st time-they disconnected me after being on hold 10 minutes-2nd call
I was put on hold for 40 minutes ..Finally spoke to someone ( they are not mac users or mac experts!)and he said I would need to send it to Seagate's Data Recovery-... for a fee of course!
~~~
At this point, I am hoping to just get the files and photos off
the hard drive- I heard about Disk Warrior-should I use that and if so
what version?
Thank you very much!
L

Will zapping the PRAM be of any use in getting the external to mount on the desktop?
Your external Hard drive is already recognized. But it cannot be mounted on the desktop due to its directory damage. You can certainly Zap the PRAM, and it will not hurt anything, but I am skeptical that it will change the situation.
Do you think the Disk Warrior 4.0 cd will even work on my G3 350MHZ running Mac OS 10.1.5?
If you boot from the CD and run it from the CD, absolutely yes. If you attempt to INSTALL it from a download or a CD, probably not.
Have you ever used Disc Warrior and is using it complicated?
I own and use Disk Warrior. You select the drive to be rebuilt, it builds a proposed new directory from the information and file fragments available.
When complete, it will provide a list of problems encountered, tell you what files have been placed in the "Rescued Items" folder, and allow you too look at your drive using the proposed new directory. Your only decision is whether the new directory seems to be an improvement over the old \[in your case, hopelessly corrupted] directory. You then tell it whether to replace the old directory with the proposed new directory, or to abandon its work and leave your Hard Drive unchanged.
Is there a good chance that the ext HD will still have my files on it- or do you think from what I've described that they are gone ?
From what you have described, your files are very likely to still be there. Sometimes in a situation like this, a handful of files cannot be recovered.
My other thought was to take the external HD there and have them try to recover the files.
Make sure you completely understand the costs involved. File recovery using a service like DriveSavers can run into many hundreds of dollars. They are prepared to disassemble your drive in a clean room and replace controller boards and read/write heads to achieve success. Your drive has serious, but not fatal, Directory damage. The Hardware, and most of your files, are likely just fine.

10.8.5 external hard drive won't mount

After installing 10.8.5 update my Seagate external hard drive that I use as my Time Machine backup won't mount. I can see it in Disk Utility, but it refuses to mount.
Anyone else? Suggestions?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Maxtor One Touch II Won't Mount

I'm running 10.6.8 and my maxtor one touch II won't mount all of a sudden? I've tried fire wire 400 and fire 400to800, restarting etc. The drive won't show up?
The driver update on the Maxtor/Seagate site opens up as code in a text edit file, it doesn't show up as the typical box to be unstuffed. Either way, it's an old update and I've been using this external drive for years. It's definitely spinning, but the computer just can't find it.

re:
Re: Maxtor One Touch II Won't Mount
Jan 1, 2012 8:19 PM (in response to RothHaus)
Can Disk Utility see it? If so try repairing the drive.
As it turns out I finally got the drive to mount, after several attempts. It was simply a matter of there being less than a gig free on the maxtor so it was having trouble booting up.
Thank you for the response!

New HD won't mount?

I recently installed a Seagate 160GB hard drive but it won't mount. It is set as a slave and is recognized by the system profiler. How do I format/initialize this drive in disk utility?

Timmer, welcome, first go to Applications/Utilities/Disk Utility and double click the Disk Utility icon. Select the drive to be formatted in the left hand column of the Disk Utility window. Now select erase from the upper menu and click the Erase button below. Then select Partition from the upper menu, you can create as make as many partitions as you like or keep just the one, now name the HD. Then format the drive to Mac OS Extended (journaled) and click the Partition button below. Now select First Aid from the upper menu and run Verify and Repair, then repair Permissions. Now you should be able perform your installations. Repair Permissions again. Good Luck.
Joe
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)

Harddrive won't mount anymore

Hello all,
One of my internal hard disks (Seagate Baracude 7200.11, 1 TB) of my Mac Pro won't mount anymore. The disk is spinning as normal, I don't hear a weird sound or anything. It just won't mount. Not in Finder, not in Disk Utility and not in Systemprofile.
I did try diskwarrior and some other utility apps, but nothing seems to work.
Is the disk just 'dead'? Or is there something wrong with the SATA connection?
Thanks for helping me!
Greetz,
Maarten

Thank you for the answers. I went to the Seagate website and did a firmware upgrade for the same hard drive that is (still) working...
The other one is 'dead' but, according to Seagate, the files are still on the disk. I contacted them to help me out. There are people that claim that Seagate will recover for free because it's a firmware problem.
Thankx!
Maarten

10.4.9 and now USB Hard Drive(s) Won't Mount

After running the combo updater on my Intel Core Duo iMac 17" my LaCie BigDisk won't mount nor will my 60GB USB hard drive that I use to backup my MacBook (though this drive DOES mount on the MacBook without any problems). All other USB devices (and my 160GB Western Digital USB Hard Drive and 300GB Seagate FireWire hard drive mount and work fine on the iMac). My LaCie BigDisk wouldn't mount on my MacBook at first, but eventually mounted ONCE on the MacBook. I have tried repairing permissions, rebooting, using an older IOUSBFamily.kext (that was a nightmare and required some CLI experience to undo without having to find a firewire cable that long enough to reach around my desk to use the iMac via Target Mode on the MacBook good thing I saved the original).
At any rate here is the error output in Console.app:
Mar 13 20:32:59 iMac kernel[0]: USBF: 426. 4 ControlTransaction: control packet 1 error 0xe0004057
Mar 13 20:32:59 iMac kernel[0]: USBF: 426. 4 AppleUSBEHCI[0x3af4000]::DeviceRequest - buffer dmaCommand (0x39b3900) already had memory descriptor (0x3f54a00) - clearing
Mar 13 20:32:59 iMac kernel[0]: USBF: 426. 5 AppleUSBEHCI[0x3af4000]::ControlPacketHandler - unexpected command BufferMemoryDescriptor(0x46a0d00)
Mar 13 20:32:59 iMac kernel[0]: USBF: 426. 35 AppleUSBEHCI[0x3af4000]::DeviceRequest - dmaCommand (0x39b3900) already had memory descriptor (0x46a0d00) - clearing
Mar 13 20:34:08 iMac kernel[0]: USBF: 495.663 AppleUSBEHCI[0x3af4000]::Found a transaction which hasn't moved in 5 seconds on bus 253, timing out!
[Above Repeating for a long time]
Mar 13 20:34:12 iMac kernel[0]: USBF: 499.351 [0x3bd7800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 2 of hub @ location: 0xfd300000)
Mar 13 20:34:12 iMac kernel[0]: USBF: 499.352 [0x3bd7800] The IOUSBFamily was not able to enumerate a device
Any help would be appreciated!

Anyone else having this problem?
Possibly.. my Lacie hard drive (firewire) has stopped working since I updated to 10.4.9 with the device attached. See: http://discussions.apple.com/thread.jspa?threadID=889519&tstart=45
iMac G5 iSight 2.1GHz, iBook G4 1.42GHz, iMac G3 Snow 700MHz, 2x iSight Mac OS X (10.4.9)

USB Drive Accidentally Unmounted & Now Won't Mount

Hi,
My Seagate 400 GB USB external drive was accidentally unmounted improperly and now it won't mount. I restarted my laptop, restarted the drive itself, changed cords and USB inputs on the laptop and nothing has changed.
The drive doesn't show up in Disk Utility, but it does in System profiler. In System Profiler it shows up, but with minimal information. My 300 GB Seagate drive (which is fine) shows up with a great deal more information like it's capacity etc. etc.
I have really essential information on the 400 including a project that's due relatively soon, so any help would me greatly appreciated!! THANKS!
-jules

Two things you can try:
Try connecting the drive, and restarting from the CD/DVD that came with your Powerbook, and use the Disk Utility to look for your connected drive.
You may also look in finder>preferences>general and make sure that the boxes are checked to show hard drives on the desktop.

Seagate 3TB Go Flex won't mount

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