[Ti] new drive for macbook

[David Delmonte]

Alexandre, congratulations on a good decision. You may want to wait a  
few days to see that your new drive is ok, then use the old one for  
Time Machine. Alternatively, buy a second drive for that enclosure.

David

On Apr 21, 2008, at 7:21 PM, alexandre kapellos wrote:

thanks to all who replied…

i finally got a samsung 250gb / 5400rpm / 8mb cache drive. it was a  
good compromise between price (chf 100.00) and performance. i also  
bought an usb2 case.

i  cloned the drive with CCC (it took about 3 hours) and then replaced  
the original with the new drive. (i'm amazed at how fast and easy it  
is to actually replace the drives in the macbooks. thanks apple!) i  
rebooted and everything was fine… i'll be keeping the "old" drive "as  
is" for a few days, just in case…

kind regards

alexandre



On Apr 21, 2008, at 12:47 AM, Scott Strehlow wrote:

> Hi Alexandre,
>
> In November bought a WDC Passport 250GB USB external HD for $150  
> including tax at Best Buy.  It had a SATA drive in it so I just  
> cloned my Mac to it then swapped the drives.  I now have the 250GB  
> internal and put the original 120GB into the enclosure.  The whole  
> process, including copying, took maybe an hour.  I don't think it  
> took more than ten minutes to actually do the physical swap.  It  
> took a bit of fiddling to figure out that the external enclosure  
> just snaps together.  I was a bit timid about prying on it until I  
> got a corner started and saw how it went together.
>
> It is a 5400 RPM drive and is plenty quick.  The actual spindle  
> speed is not super critical to the speed of the drive.  What matters  
> is how fast the bits pass by the read head.  All other things equal,  
> a 4200 RPM 128GB disk will have about the same read/write speed as a  
> 5400 RPM 100GB as the bits are packed closer together on the track.   
> The seek time is directly related to the rotational speed.  On  
> average, the platter has to make a half-turn to get to the requested  
> sector.  The 4200 takes about 14ms per turn and the 5400 about  
> 11ms.  These are not huge differences.  I do notice a performance  
> difference but I can deal with either.  The slower drives do use  
> less power and put out less heat.  If you are running on batteries  
> most of the time, it might be worth going for the slower unit.  They  
> are cheaper too.
>
> Of course it depends on what you are running.  Editing video demands  
> a faster drive.  Checking email doesn't care.
>
> Cheers,
>
> Scott
>
>
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