Currently Being ModeratedOct 17, 2013 6:56 PM (in response to miss miso)
youve confused your information a bit.
you have 2 external HD ....WD and seagate .......yes?
which one got knocked out?
which HD is not showing at ALL in disk utility?
Youve got a broken chain of causation.......youre blaming your WD being knocked around for your Seagate "not showing up in DU"
"but my Seagate ext hard drive which I use for time machine would not come up."
The two are unrelated obviously.
Verify your Seagate on another Mac, if it doesnt show up, the SATA bridge card is bad, which is VERY common in fact.
Currently Being ModeratedOct 19, 2013 11:03 PM (in response to PlotinusVeritas)
Thanks for your reply. Sorry if I was unclear.
My WD drive got knocked out.
My Seagate drive does come up on another Mac, and my WD drive shows up on my friend's PC.
But I can't access them properly on my Mac.
WD drive is formatted to FAT32 I believe (if that is relevant)
Seagate (Time Machine back-up) is not showing up in Disk Utility.
Currently Being ModeratedOct 19, 2013 11:25 PM (in response to miss miso)
Wiggling on USB port causes the seagate to appear
Reason the stick came up is it doesn't put and pressure on the USB port
All current info points at a bad USB port.
lastly confirm both HD on both USB ports. Specifically the other USB port
Currently Being ModeratedOct 21, 2013 4:23 AM (in response to PlotinusVeritas)
Thanks for getting back to me.
FYI, I took my mac and the drives to a technician a friend recommended and it became clear that the Seagate drive was faulty, so we replaced the case and now it works fine. Still had issues with opening the files on the WD drive. He is going to try copying the data from my WD drive onto his computer and then re-formatting my drive and copying the files back. Hopefully it will all work after that.
Thanks again for your help!
Currently Being ModeratedOct 21, 2013 6:33 AM (in response to miss miso)
ahh, so it was the part i warn people about... the SATA bridge card is bad, VERY common problem
Another dead SATA card
You replaced the case, that didn't mean the HD was bad just that card,.....good news
Currently Being ModeratedOct 22, 2013 2:17 AM (in response to miss miso)
You said---Seagate drive was faulty, so we replaced the case
Well, its enclosure with SATA card was faulty, not the HD itself.
Ive heard about failing SATA cards so much over many years, I decided to write USER TIP on it.
Alas its so common a problem.
There are no hard facts whatsoever, especially since so many people discard their assumed “dead/faulty” hard drives, but a good educated conclusion from years of examining and seeing this issue is that for hard drives made since 2010, and not dropped or generally abused, is that a minimum of 50% conservatively are perfectly fine! I personally estimate however that it likely approaches 60%+.