Re: Hidden Space

[Severin Crisp]

Thanks Ronni, that summarises it nicely.
Severin

Sent from Sev's iPad

> On 14 Mar 2019, at 5:09 PM, Ronni Brown  wrote:
> 
> Hello Severin,
> 
>  Scan the disc as Administrator 
> https://daisydiskapp.com/manual/2/en/Topics/AdminScan.html
> 
> Hidden Disk Space
> Strange hidden space may also be caused by a third-party backup application 
> that created a temporary disk image and then terminated abnormally without 
> cleaning it up. Use ls -la /Volumes/ command in Terminal app to check if this 
> is the case.
> https://daisydiskapp.com/manual/2/en/Topics/HiddenSpace.html
> 
> Kind regards,
> Ronni
> 
>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
> 
> 
>> On 14 Mar 2019, at 4:06 pm, Severin Crisp  wrote:
>> 
>> I became aware of a reduction in free space on my MacAir, 250GB SSD, High 
>> Sierra.  Daisy disk shows 84GB of Hidden Space sure enough.   I've so far 
>> been unable to locate this except that it is in the system, total nearly 
>> 100GB.  Pointers on how to find and remove this please!
>> Severin Crisp
>> 
>> 
>> Assoc Prof Severin Crisp, FIP, FAIP
>> Clarence Estate, 55 Hardie Rd,
>> Albany, Western Australia, 6330
>> (Home:  15 Thomas St, Mount Clarence,
>> Albany, Western Australia, 6330)
>> Ph 0484 624 741
>> Email: sevcr...@westnet.com.au
>>   
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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Re: Hidden Space

[Ronni Brown]

Hello Severin,

 Scan the disc as Administrator 
https://daisydiskapp.com/manual/2/en/Topics/AdminScan.html

Hidden Disk Space
Strange hidden space may also be caused by a third-party backup application 
that created a temporary disk image and then terminated abnormally without 
cleaning it up. Use ls -la /Volumes/ command in Terminal app to check if this 
is the case.
https://daisydiskapp.com/manual/2/en/Topics/HiddenSpace.html

Kind regards,
Ronni

 Ronni Brown’s iPad Pro 12.9-inch 256GB 


> On 14 Mar 2019, at 4:06 pm, Severin Crisp  wrote:
> 
> I became aware of a reduction in free space on my MacAir, 250GB SSD, High 
> Sierra.  Daisy disk shows 84GB of Hidden Space sure enough.   I've so far 
> been unable to locate this except that it is in the system, total nearly 
> 100GB.  Pointers on how to find and remove this please!
> Severin Crisp
> 
> 
> Assoc Prof Severin Crisp, FIP, FAIP
> Clarence Estate, 55 Hardie Rd,
> Albany, Western Australia, 6330
> (Home:  15 Thomas St, Mount Clarence,
> Albany, Western Australia, 6330)
> Ph 0484 624 741
> Email: sevcr...@westnet.com.au
>   
> 
> 
> 
> 
> 
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - 
> Guidelines - 
> Settings & Unsubscribe - 
> 
-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Hidden Space

[Severin Crisp]

I became aware of a reduction in free space on my MacAir, 250GB SSD, High 
Sierra.  Daisy disk shows 84GB of Hidden Space sure enough.   I've so far been 
unable to locate this except that it is in the system, total nearly 100GB.  
Pointers on how to find and remove this please!
Severin Crisp


Assoc Prof Severin Crisp, FIP, FAIP
Clarence Estate, 55 Hardie Rd,
Albany, Western Australia, 6330
(Home:  15 Thomas St, Mount Clarence,
Albany, Western Australia, 6330)
Ph 0484 624 741
Email: sevcr...@westnet.com.au
  







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Re: Strange iMac freezes

[Neil Houghton]

Hi Daniel,

Thanks for the info & suggestions.

I don't think it is a heating problem. I used fan control software for quite a 
while when the original HD failed and I was running from my backup clone on an 
external drive. However when I replaced the HD and installed the SSD I used the 
OWC provided temperature sensor/lead and now the inbuilt system temperature 
control seems to work well. The HD fan seems to run a little faster than the 
original setup (maybe the 3TB Toshiba generates a bit more heat than the 
original 1TB drive) but iStat menus shows all temperatures as normal and fans 
ramping up as required.

Previously, on hot days, the internal temperatures did rise enough to get the 
fans speeding up a bit (as expected) but never gave any problems. The problems 
have just been apparent this week when temperatures have not been high and fan 
speeds have been normal.

The hard drives were my first thought - which is why I booted from an external 
drive and ran the full disk utility repair process on all internal drives an 
volumes - which showed no problems. Since AHT IS showing a RAM problem I think 
I need to address the RAM first. If I get rid of the currently indicated RAM 
problem and find that I still have ongoing problems then I may need to look at 
installing the combo update or look at more extensive HD testing - but I prefer 
to address one thing at a time to give me a better feel for the problem.

I tried downloading remember but OSX won't let me open it because it is from an 
unidentified developer. I tried clicking the "open anyway" button but it still 
won't open - gives the same message. I guess I could change my security 
settings to allow apps downloaded from anywhere - but I'm reluctant to do that. 

I did read the Remember documentation though and note that it says:
--
Try the Apple Hardware Test CD or DVD first!
Macintosh computers currently ship with a version of the Apple Hardware Test 
(AHT), which can perform some fairly heavy duty memory tests on a computer. 
This should be one of the first lines of defense in diagnosing computer 
problems. Although the AHT test are thorough, they have not proven to find all 
defective memory. If these tests do not find the problem, then give Rember a 
try.

AND:
If have experience replacing hardware, the only way to locate defective memory 
chips is by deduction - guess and check or split-half method troubleshooting. 
This may be updated in the future. You may also attempt to run the Apple 
Hardware Test CD or DVD that comes with most Macs. This may give more 
information (if it finds the problem).
--

So it would seem that Remember won't actually indicate which module is faulty - 
and since AHT is already indicating a problem the maybe I just need to try the 
suggested deduction ;o)

The computer has been running OK since yesterday - but doing next to nothing as 
I work on the laptop - so I will run AHT again to be sure it still sees the 
problem - and then probably try the split-half method trouble shooting.

I will keep you informed on progress.


Cheers


Neil


On 13/03/19, 21:28, "Daniel Kerr" 
 wrote:

Hi Neil

Just a quick reply as finishing off some other work.

A few things I would run to test it.
(sometimes I find Apple RAM test not all that helpful, whereas the 
following is very good).
Just be aware it can take a really really long time to test it all, as it 
does a huge amount of tests to all the modules. (I’ve seen some take hours to 
complete - 
Rember - http://www.kelleycomputing.net/rember/

I’d also run the hard drives just to rule them out. For a good program I 
use Smart Disk Utility from here - 
(the demo is fine for a one off test).
https://www.volitans-software.com/apps/smart-utility/

Could also be something “heating up” perhaps? So it runs for a while, until 
a part is heated up a bit more. (unlikely, but worth a check anyway).
For older iMac’s that have had hard drives replaced this is a good program 
to help control the Fans a bit more then the Apple one - 
http://www.hddfancontrol.com

But I’d be checking the RAM first would be my start.

Hope something there helps. If I think of more, I’ll post back as well.
Kind regards
Daniel

---
Daniel Kerr
MacWizardry

Phone: 0414 795 960
Email: 
Web:   


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