Seagate external drive not recognised

I've had this external Seagate hard drive since I got the Mac itself - around 2 years ago. It's worked fine up to yesterday, when it started making horrible noises, and today when I switched on the Mac it told me 'the disk you inserted was not readable by this computer'. I've tried taking out & re-inserting the USB cable, but I fear something more serious has happened. I looked at another thread on this issue here, but it was full of very technical jargon, & photos someone had taken of the hard drive in pieces; I really don't feel competent to take my drive apart to find out what is wrong! I looked in 'Disk Utility', but I have a second Seagate drive which is the Time Machine back-up, so I'm not very sure which drive I am looking at in there. Everything was greyed out anyway, so I could not click on 'repair' or any of the other options. I would be grateful for any ideas or suggestions!

Thanks; I tried this, & the hard drive is 'seen' by Disk Utility, but not by Finder. See screenshot attached; it's the 'Go Flex' drive I've highlighted. However I can't actually do anything with it in Disk Utility, as all the options to 'verify', 'repair' etc are greyed out. NB: This is the same for the Time Machine back-up drive as well though; no options to do anything.
I contacted the Seagate support but I guess there's nothing much they can do if it's died. Yes I do have the files elsewhere; but mostly on DVD & very time-consuming to access. & if you're using a supposedly 'reliable' hard drive as your back-up disk then you don't expect it to suddenly collapse after just 2-3 years. This makes me worried about the Seagate drive I'm using as my main back-up!

Similar Messages

External drive not recognised in Finder or Disk Utility on new Mini

Hi,
I've just bought a new Mac Mini and it won't recognise my Seagate Expansion drive in either Finder or Disk Utility. The drive is fully accessible on my old Macbook (running Snow Leopard), and ran fine on my old iMac running Mavericks. I've tried the troubleshooting tips in other threads - Seagate External Hard Drive does not work on Yosemite - but since they refer to people upgrading to Yosemite, I'm wondering if this might be down to the hardware in the latest Mini models? Any info or ideas on what to try next would be hugely appreciated!
Thanks.

- Do other external USB drives work on your Mini?
- If you go to System Report (click on Apple icon in upper left and select About this Mac>More Info>System report) what shows for the drive under Hardware>USB? Yo should see the enclosure chip as well as the drive itself.
- Tr resetting the SMC and PRAM
- If you purchased the Mac within the last 90 days you still have free telephone support
Complimentary Support (USA)

Boot Camp: Seagate External Drive not Recognized in Windows Explorer -- PLEASE HELP!

I'm running in Boot Camp and using a Seagate Free Agent GoFlex external drive as both a Time Machine backup on the Mac OS, as well as a storage unit to exchange files. However, whenever I plug my external drive into my computer while running Windows, it does not show up in the Computer tab under "Devices With Removable Storage", like it should. It does show up on the "Safely Remove Hardware and Eject Media" button in the bottom right hand corner, and it appears as a "Startup Disk" in the Boot Camp Control Panel, so I know that it isn't a cable or USB input issue. Please help me get it to appear as a Device in the Windows Explorer. I need to exchange files from my Mac OS to my Windows OS. Thank you in advance for the help.

I did it but i could not install tool from the dvd. As i said, i can still boot up windows xp i just needs to re-install the service tool.
The drivers are working properly.

Seagate external hardrive not recognised by Imac after wakeup / start up

Hello,
I use this seagate external 1tb driver / mac version silver/ for the time machine
and almost every time I startup my Imac seagate will not start with it or show in finder, unless
I unplug the firewire and plug it back again.
I tried to find a solution on the net but no result, actually I don't even know how to look up this issue on google.
I would appreciate if someone could help me with how to fix that.
Many thx in advance
and Merry Christmas to you all

Is this the type of enclosure that power on and off automatically, based on the state of the Mac (no need to flip a switch)?
Does it also have a USB connection on it? If so, if you connect by USB 2.0, does it have this same problem?
Did it work properly before and recently stopped working, or did it aways have this problem?

Seagate external drive not recognized

Seagate Back Up Plus external drive is no longer recognized by my Macbook Pro. There were no warnings or prompts just one day was no longer recognized by Finder, Disk Utility and Disc Warrior can't see it either. I can hear the whirring sound of it starting up when plugged in to my computer. Any ideas how to get it back?

Thanks kaz-k,
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            749.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            DiskWarriorDVD         *1.4 GB     disk1
192-168-1-2:~ Jessie$

Seagate external drive not recognized since firmware update

I've looked through the posts here and haven't found this issue addressed specifically, so here goes. Any help will be appreciated.
I ran the firmware update on my MacBook Pro the other day, and everything has been normal since, except when I went to switch on my Seagate external HD - which I use as a backup drive - this morning. The mac doesn't see it at all.
Brought the drive into the office this morning and the iMac here, which hasn't been updated in at least 6 months, sees the Seagate right away.
I haven't upgraded to Leopard, though I have it, becuase I'm in the middle of a project and don't want any trouble with ProTools. In fact, I hadn't been making any updates at all, but in a moment of weakness ran the firmware update!
Thanks in advance.

Thanks kaz-k,
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            749.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            DiskWarriorDVD         *1.4 GB     disk1
192-168-1-2:~ Jessie$

Quubz external drive not recognised by Mac?

Hi,
I have a macbook air and was look for an external drive. I was told the qubz drives are compatible however when i connect it it doesn't seem to be recognised. The power is running through as the green light is on, but i cannot find it anywhere on my mac?
I know a few people have had similar problems - is there a solution to this?
Thanks!

Did you format the drive with Disk Utility? Format external drives to Mac OS Extended before using with Aperture - Apple Support

250gb Freecom External Drive not recognised

I have two 250gb Freecom External Drives. One works fine but the other is no longer being recognised. I have reset PMU and tried to see if the drive is recognised in Disk utility but disk utility simply hangs until i unplug the drive.
Help!

i have been experiencing the exact same problem with my external hard drive, except the brand is comstar. perhaps this is a general problem with mac os x and external HDs?

External drive not recognised

Hi,
I'm trying to attach an old laptop hard drive via a SATA to USB cable, but it's not being recognised. Dmesg shows the output below, so it identifies that a new device is attached, but fdisk -l or lsusb don't know it's there. Not sure what to try next - any ideas?
usb 2-2: new high speed USB device using ehci_hcd and address 6
scsi7 : usb-storage 2-2:1.0
scsi 7:0:0:0: Direct-Access PQ: 0 ANSI: 2 CCS
sd 7:0:0:0: Attached scsi generic sg2 type 0
sd 7:0:0:0: [sdb] Attached SCSI disk
I'd have expected an error message or something to appear in dmesg. The drive should contain a single NTFS partition.
Thanks,
Fishonadish

Oops - just noticed this line in lsusb. I assume this means the connector I'm using isn't working?
Bus 002 Device 008: ID 152d:2338 JMicron Technology Corp. / JMicron USA Technology Corp. JM20337 Hi-Speed USB to SATA & PATA Combo Bridge

Seagate 3TB External Drive not mounting

The light is on but no-one is home. Recently upgraded iPhone4 to OS7.1.2 (which required reboot) and since then the Seagate External Drive is not mounting on the desktop. Computer details below;
MacBook Pro Model 5.5
2.26 GHZ Intel Core 2 duo
Boot rom Version: MBP55.00AC.B03
SMC Version (system) 1.4f2.
The problem started with OSX 10.6.8 (when upgraded iPhone OS), I tried Disk Utility didn't work. Have upgraded to 10.9.4 still won't show. Have check preferences, used Disk Utility & SMC reboot to no avail.
I did connect to another MacBook Pro 5.5 running OSX 10.6.8 and external drive would not mount.
Any suggestions..?? or is the external drive fried..

How old is the drive?
If you put your hand on the drive do you feel any vibrations?
Restart with drive attached. If this fails to mount the drive in Disk Utility, it sounds like the drive has died.
If you can see the drive in Disk Utility you might try Repair Drive. You might have to erase the drive to repair.

Cant seem to get a seagate external drive to show up in finder when on the

cant seem to get a seagate external drive to show up in finder when on the airport extreme base station. ver 7.5 using 10.6.2 any special setting to show it up in finder?

I tested a FAT 32 drive and it will show up.
Open your Hard Drive and look for your AirPort Extreme under the SHARED heading
Click the AirPort Extreme icon and then click Connect As at the upper right of the window
Your drive should appear
If not, click anywhere on your open desktop so that the Finder menus appear at the top of the screen
Click Finder, then click Preferences, then click the General tab
Under the heading of "Show these items on the desktop", make sure there is a check mark next to "Connected Servers"

My macbookpro (2.4 GHZ Intel Core i5, DDR3, OSX 10.9.4), stopped recognizing my Seagate external drive out of the blue. Help!

Hello,
I accidentally unplugged my 2TB Seagate external drive, and when I pugged it back on, my Mac was still recognizing it, however, when I tried to access its contents, the folders appeared empty, so I tried to eject the drive, but the icon on the desktop was gone, I unplugged it, restarted my Mac, and it did not recognize the external drive. Then I repeated the stunt at lest three times. I thought the drive was ruined, so I got a laptop that runs Ubuntu, and Ubuntu recognizes and displays the contents correctly, which makes me think the external drive is fine. Any ideas on what to do? I mean my Mac won't even acknowledge the drive at all, otherwise I would think about re-formatting. Any ideas, I'd much appreciate it. Thank you.

Hello,
I accidentally unplugged my 2TB Seagate external drive, and when I pugged it back on, my Mac was still recognizing it, however, when I tried to access its contents, the folders appeared empty, so I tried to eject the drive, but the icon on the desktop was gone, I unplugged it, restarted my Mac, and it did not recognize the external drive. Then I repeated the stunt at lest three times. I thought the drive was ruined, so I got a laptop that runs Ubuntu, and Ubuntu recognizes and displays the contents correctly, which makes me think the external drive is fine. Any ideas on what to do? I mean my Mac won't even acknowledge the drive at all, otherwise I would think about re-formatting. Any ideas, I'd much appreciate it. Thank you.

My Seagate external drive won't work since I downloaded Yosemite

My Mac recognizes my Seagate external drive but it doesn't work since I downloaded Yosemite.

Yosemite is not a Classic operating system. See where to post here:
Site map of Communities and Categories
Also you may find this tip useful:
WD, Seagate, and Toshiba drives

HT201269 How do I transfer a movie from an iPad mini to a Seagate external drive?

How do I transfer a movie from an iPad mini to a Seagate external drive? Movie is now in iTunes store. Purchased a new Seagate external drive fo xmas and is recognized by the iPad mini. Tried by moving a small video and worked. Now I would like to move two movies that are in iTunes store that were purchased to the external drive to free up space and be able to watch in potential upcoming new Apple Air. Have checked several pages on-line and having no success finding the information to enable me to do this. Some some information about moving the movie to iCloud, but did not seem to work.

You don't need to do this.
Any purchases you make from the iTunes store are yours for download anytime on any device with your Apple ID used to purchase that media. It could also be streamed from the cloud.
Just delete the movies from the iPad if you need the space.
When you get a new iPad, open the iTunes store, go to purchases, and sign in. Then you can download anything you bought with your ID in the past - Free, you already own it.

My mac mini won't back up to my Seagate external drive but can read the information on it. Can i back up to it at all?

My mac mini won't back up to my Seagate external drive but can read the information on it.
Can i back up to it at all? and how do i do it?
Simon

I suspect the Seagate is not formatted to be used with the Mac. The correct format would be Mac OS Extended (Journaled), if you just bought the EHD then almost certainly it's formatted to be used with MS Windows machines. This is easy to fix, here are instructions on how to format it:
http://pondini.org/OSX/DU1.html
After formatting Time Machine http://support.apple.com/kb/ht1427 will launch and will begin backing up. The first backup will take some time however after the first backup it will go pretty quickly.
NOTE!!!!!!!!!!!!!!! After formatting all data will be erased, so please if you have data on that move it to the internal HD first and then format. Then once you have backed up you will have a backup copy of the data. Also NEVER EVER use a backup disk to be used to store data. The reason being is if that drive crashes you have not only lost the data you have lost it's backup!!!!!!!!!!!!!!!

Seagate external drive not recognised

Similar Messages

Maybe you are looking for