Retrieving laptop HD data


K

Ken Springer

But we paid premium priced for SCSI drives, too. And they were very
reliable. I doubt IDE drives would have lasted me this long.
From the little reading I've done about one vs. the other, the overall
quality, longevity, basically everything except the price, SCSI wins out.


--
Ken

Mac OS X 10.8.3
Firefox 19.0.2
Thunderbird 17.0.4
LibreOffice 4.0.1.2
 
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P

Paul

Gene said:
It remains true, as I said, that they have the same connections.

And in fact, laptop drivers require no more power than 3.5" drives.

I just looked at two drives that happen to be convenient to hand.
3.5": 5V @ 0.72A and 12V @0.52A
2.5": 5V @ 0.55A

Do note, however, that a USB port is required to provide only 0.5A at
5V, and the adapter itself will obviously use some power (thus the Y
cable or external power connection).


From my two drives above, you are saying that 0.72A < 0.55A.

I should look at another drive. Hang on a second.

OK, this is a slim-line 3.5" drive; it says 5V at 0.75A and 12V at
0.75A.


USB docks with external power supplies or USB adapters with external
power supplies should both work fine with both drive sizes; if they
don't, there is a problem somewhere. But who knows where?

USB adapters or portable drives without external power are another
issue...
The 0.55 amps on the laptop drive label, is *not* the spinup current.
That is the read/write current. The spinup value is typically hard
to find, when you need the information. Sometimes it's in the datasheet,
and sometimes, it's not available anywhere. An assumed value for
a 2.5" drive, is 5V @ 1A.

Paul
 
C

cameo

Tim Slattery said:
I've had success with this gizmo:
http://www.newertech.com/images/hr/NWTU2NVSPATA.pdf

Supports "normal" 2.5" notebook drives, IDE and SATA. It has a
separate power source for IDE and SATA drives. Allowed me to read my
laptop's drive (2.5") when the machine died.
Unfortunately a repeated reheating the GPU soldering did not fix my
laptop
this time, so it's really unfixable by me. I've just ordered that
Newertech adapter
and should get it in a few days. I hope I'll have success with I, too.

This time I'll also get a Lenovo notebook with Intel I7-3632QM CPU.
No more HP and AMD for me.
 
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C

cameo

Ken Springer said:
From the little reading I've done about one vs. the other, the overall
quality, longevity, basically everything except the price, SCSI wins
out.
Well, at least I've got my money's worth.
 

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