5K1000-750 HDD in MacBook extremly slow
February 7th, 2019, 12:10
Got a 5 year old MacBook to 'repair'. Login or any start of a programm last
minutes, but there is never an error message shown. Not to many startups
set in the system startup, simply the beast takes for ever, whatever you
would start. But scrolling in an existing window is fast as ever before. So
apparently no CPU fault.
Opened the old MacBook and removed the HDD 5K1000-750
It's by http://www.hgst.com, a Wester Digital company.
Connected the HDD via an USB t SATA adapter to a new and working MacBook.
The noname adapter comes with a +12 volt power supply (?) Copied most of
the user data from the HDD 5K1000-750 to another external HDD that was
connected to the new MacBook. Transfer ran with no delay, absolutely that
what one expects on speed for such a job.
So, I was sure, the MacBook must have some fault inside, because the HDD
works with the expected speed if it is connected to an external USB adapter.
The owner went with the re-assembled old MacBook to an Apple store and
called me: the salesman says, we know such kind of problem, some HDD
start to creep after several years of usage inside the MacBook, but they are
OK on external adapters. He will replace the HDD (now a SSD) and all will be
fine. That's what they did.
- my question: did my extra +12 volt 'awake' the HDD, or is the + 12 volt just
for the electronis of the USB to SATA adapter? SATA has specs for +12 volt,
the 5K1000-750 is just referring to +5 volt int their specs.
- is it a extremly fragmented HDD and the USB to SATA adapter will handle that
much better/faster than the MacBook?
- what else can be the reason for such a fault ?
rgds
minutes, but there is never an error message shown. Not to many startups
set in the system startup, simply the beast takes for ever, whatever you
would start. But scrolling in an existing window is fast as ever before. So
apparently no CPU fault.
Opened the old MacBook and removed the HDD 5K1000-750
It's by http://www.hgst.com, a Wester Digital company.
Connected the HDD via an USB t SATA adapter to a new and working MacBook.
The noname adapter comes with a +12 volt power supply (?) Copied most of
the user data from the HDD 5K1000-750 to another external HDD that was
connected to the new MacBook. Transfer ran with no delay, absolutely that
what one expects on speed for such a job.
So, I was sure, the MacBook must have some fault inside, because the HDD
works with the expected speed if it is connected to an external USB adapter.
The owner went with the re-assembled old MacBook to an Apple store and
called me: the salesman says, we know such kind of problem, some HDD
start to creep after several years of usage inside the MacBook, but they are
OK on external adapters. He will replace the HDD (now a SSD) and all will be
fine. That's what they did.
- my question: did my extra +12 volt 'awake' the HDD, or is the + 12 volt just
for the electronis of the USB to SATA adapter? SATA has specs for +12 volt,
the 5K1000-750 is just referring to +5 volt int their specs.
- is it a extremly fragmented HDD and the USB to SATA adapter will handle that
much better/faster than the MacBook?
- what else can be the reason for such a fault ?
rgds
Re: 5K1000-750 HDD in MacBook extremly slow
February 11th, 2019, 17:12
most likely you got a Apple A1278 model. The hdd flex cables fail like crazy on them and it is an easy fix. When I say fail they either become unstable or very intermittent. Replacing the hdd cables fixes that known issue.
Re: 5K1000-750 HDD in MacBook extremly slow
February 11th, 2019, 17:18
nicoalbrecht wrote:most likely you got a Apple A1278 model. The hdd flex cables fail like crazy on them and it is an easy fix. When I say fail they either become unstable or very intermittent. Replacing the hdd cables fixes that known issue.
+1
Re: 5K1000-750 HDD in MacBook extremly slow
February 12th, 2019, 7:05
mr_spokk wrote:nicoalbrecht wrote:...Replacing the hdd cables fixes that known issue.
+1
Had no error messages / read errors etc. Just the machine got incredible slow.
Hacked for several hours
without any messages, just any action was creeping.rgds
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