Currently Being ModeratedJan 31, 2013 4:52 PM (in response to unimatrix7)
Hi, my first suspect would be flaky PSUs on those external drives, seen quite a few with that problem.
Currently Being ModeratedJan 31, 2013 6:07 PM (in response to BDAqua)
Thanks for replying. I don't think it's the power supply issue as the drives power up for a while and powers down because the mac doesn't recognise it. I tried using another power adapter same issue.
If the power supply unit u are talking about is in the hard drive itself. Again no issue as my media player unit (AC Ryan) can detect my drives and play the video files in it.
I have been trying to search for tools to diagnose if my USB ports in my mac are stuffed. I am not a techie so am lost.
I have also done a disc verification using disk utility and the result was all good.
Appreciate if you got any more ideas abt this issue.
Currently Being ModeratedFeb 3, 2013 3:55 PM (in response to unimatrix7)
reset FW bus, same goes for USB reset...
Reset the Firewire bus
If your Firewire or USB isn't recognizing any device. A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:
1. Shut the machine down.
2. UNPLUG the power lead to the computer and any firewire/USB drive.
3. leave it for 10 minutes.
4. Connect back up and reboot.
Currently Being ModeratedFeb 4, 2013 4:38 PM (in response to BDAqua)
Thanks so much for your advice. *2 thumbs up* The mac finally recognised my 1 TB Seagate and is now backing up through time machine.
However it was not recognising my 2 TB Buffalo, when i plugged it in, it kept beeping intermittently. I thought it was disc failure at first (was very upset) but it played fine on my AC Ryan.
Anymore advice you can give?
Currently Being ModeratedFeb 4, 2013 10:40 PM (in response to unimatrix7)
If the Drive is beeping, it's a sign of impending failue.