Seagate External HDD won't show up.

That was the one Seagate recommended - thank you for your help! I'll download it now - if it works I'll you you know 🙂

Bought it (£12.99 in UK) - it's worked! hurrah! Hopefully that will be the end of it now I've bought it, as they should keep it up to date to run with El Capitan!

Anyone else having trouble - the Paragon software is the one SeaGate recommend. Can verify it works 🙂

it's this one... https://www.paragon-software.com/home/ntfs-mac/

Honestly you really should consider reformatting the drive in ExFAT if you intend to share it between OSes. It's natively supported by both OSes and you don't need a third party to make it work. Right now you are at the mercy of the third party vendor to maintain support, with ExFAT there is no such baggage.

My Windows drive (bootcamp) is in NTFS because is has to be. My Mac drive (OS X) is in Mac OS Extended because it has to be. My shared drive (third physical drive) is in ExFAT because that is all it's used for, sharing data between the two. Works beautifully. I can read and write to my shared drive from either OS whenever I want to and I can access that same content from either OS whenever I want to.

i m also facing the same problem of the hard drive not showing up in disk utility but its showing up on the system information
i dnt know how to make it work .. could you please help me out ?

System Profiler should identify both the disk and the enclosure. Your screenshot only shows the enclosure.

That means:

- The disk is dead

- There is something wrong with the enclosure, or

- the drive is not getting enough power. That not infrequently happens for HDs that are powered by the USB bus (via a separate AC power adopter), especially a USB 2 (or 1) bus

thank you for replying
is there anything i can do to fix it ?

Is the external drive powered by the USB bus?

Only small (use 2 1/2 inch drives) can be bus powered. Ones that use 3 1/2 inch drives are all AC adopter powered.

yes it is powered by the USB bus

See if it works correctly when it is plugged into a powered hub.

Could be that the USB2 port is not supping enough power.

Some drives have a connector for an AC adopter power plug.

You can also get y-cables that take power from two USB ports. What you use depends upon the port on the drive

http://www.quill.com/lacie-flash-drives/cbs/406212.html?cm_mmc=SEM_PLA_T_406212

http://www.staples.com/StarTechcom-1-USB-Y-Male-To-Micro-B-Male-Cable-For-Extern al/product_IM1DR6211?cid=PS:GooglePLAs:IM1DR6211&ci_src=17588969&ci_sku=IM1DR621 1&KPID=IM1DR6211&gclid=Cj0KEQjw4NmvBRCRp_yu2bzal4YBEiQAWfjpJvd59O7vxwGXpZBbCXd19 EcSZYzvH6bxseDLE5fAkZUaAtn_8P8HAQ&kpid=IM1DR6211&akamai-feo=off

Does the drive work/seen in another computer?

I have Seagate Backup Plus that isn't showing up on my laptop, but shows up on two different iMacs just fine. It's powered by an AC adaptor, and I tried a different brand new USB cable, (although like I said it shows up with the old USB on the iMacs), but still nothing. It doesn't show up in my Disk Utility or my System Report..nowhere.. but only on this computer. ??

Also, I just tried a different Seagate Backup Plus in the same USB port on my laptop and it shows up fine! So confused. Any help is welcome.

(Macbook Pro from late 2013 running OS X 10.11.3 El Capitan, 2.3 GHz Intel Core i7)

Does the Mini see/use a USB flash drive?

Other external HDs?

I've plugged another external Seagate HD in with basically the same specs and it showed up, also just tried a USB flash drive and it showed up too, yeah.

- Try resetting the SMC and NVRAM/PRAM

Intel-based Macs: Resetting the System Management Controller (SMC)

About NVRAM and PRAM

- Try starting in Safe Mode

OS X: What is Safe Boot, Safe Mode?

- Boot to Recovery and repair the startup disk

OS X: About OS X Recovery - Apple Support

- If it is repairable reinstall the OSX

How to reinstall OS X on your Mac - Apple Support

- If you do not have a backup use disk utility to restore the internal disk to an external disk so you can try to recover data.

Then format the startup disk and do a fresh install of OSX

Thanks, I've already tried resetting the SMC and NVRAM/PRAM, but I'll try the others on that list. Really bizarre issue.