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#21829 - 05/07/12 10:17 AM Hard Drive Puzzler
ryck Online


Registered: 08/04/09
Loc: Okanagan Valley
On the weekend I had a hard drive noise - somewhat like a hum but slightly higher in frequency - which lasted for about 15 minutes and then went away.

This morning I had it on booting and it continued. My first thought was to do a clone backup but I couldn't as Super Duper stopped, saying the drive is too big. That shouldn't have been the case.

I checked the drive size and the system thinks it's about 60 GB larger than it actually is. (It is a 320 GB drive with 79GB of material) I went through the folders one at a time (Applications, Library, Data. et cetera) and the sizes on the hard drive were not different from the SD Clone drive.

Thinking I should check things with Disk Warrior and TechTool Pro I tried to reboot from the clone. It got as far as loading the desktop but there was no Menu Bar and no Dock.

I did a forced shutdown (holding power button) but when trying to reboot it simply went back to the clone. I forced the shutdown again and turned off the clone drive. Then it booted to the main drive.

I figured that maybe a TechTool Pro eDrive might be a way to go, so I tried an eDrive install. It got as far as the System folder load but got hung up. After a few minutes I noticed the same names flashing over and over. To be sure, I let it go for another four minutes but that only confirmed what I had seen. I stopped that install.

I've rebooted to the main drive and I am NOT hearing the hard drive noise but a "Command I" of the drive still shows 60MB more than is correct. (i.e. 199GB instead of 79GB)

When I look at the drive with "About this Mac" it shows:

Capacity: 320.07 GB (320,072,933,376 bytes)
Model: Hitachi HDP725032GLA380
Revision: GM0KA59A
Serial Number: GEK033RG2LA1WC
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Rotational Rate: 7200
Medium Type: Rotational
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified
Volumes:
Capacity: 209.7 MB (209,715,200 bytes)
Writable: Yes
BSD Name: disk0s1
Macintosh HD:
Capacity: 319.73 GB (319,728,959,488 bytes)
Available: 200.24 GB (200,238,567,424 bytes)
Writable: Yes
File System: Journaled HFS+
BSD Name: disk0s2
Mount Point: /

As I submit this, the drive is silent. So, I'm puzzled.


Edited by ryck (05/07/12 10:18 AM)
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ryck

iMac (Retina 5K, 27", 2017), 3.4 GHz Intel Core i5, 8GB RAM, 2400 MHz DDR4
OS Mojave 10.14.6
Canon MX710 Printer
Epson Perfection V500 Photo Scanner
Time Machine on 1TB LaCie USB-C
Carbon Copy Clone on 500GB OWC Mercury OTG Pro

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#21848 - 05/07/12 05:37 PM Re: Hard Drive Puzzler [Re: ryck]
dkmarsh Offline
Moderator

Registered: 08/04/09

I'm a little unclear on your size references.

Quote:
I checked the drive size and the system thinks it's about 60 GB larger than it actually is. (It is a 320 GB drive with 79GB of material)

Do you mean the system thinks it's a 380 GB drive? Or do you mean the system thinks it's got 139 GB of material on it? If the latter, I don't know what to make of your reference later to "199GB instead of 79GB."
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#21850 - 05/07/12 09:37 PM Re: Hard Drive Puzzler [Re: dkmarsh]
ryck Online


Registered: 08/04/09
Loc: Okanagan Valley
Originally Posted By: dkmarsh

I'm a little unclear on your size references.

I'm not surprised when I look back at my incredibly bad math and what I wrote in my rush. blush The 60GB should have been 40GB....as in, the drive has 79 GB of data but the system shows 119. And, of course, it follows that I should have said "119 instead of 79GB". blush blush

I've since been doing some more checking and have now found the 60GB. The Users folder is 59.38. I hadn't looked at it completely because I began by looking at individual Users (Wife, Visitor account, Daughters) and, since they were were just a few MBs, I assumed everything of substance was already accounted for in the main Library. I didn't bother checking the last User (me) which had a bunch of stuff I've now told Super Duper to ignore...backups of some of my DVDs...for the sake of getting other data backed up.

So, I guess all fingers can point at me. A local electronics store has a 320 GB drive on sale so maybe I'll spring for a backup drive the same size as the internal drive.

However, all of that aside, I still don't know what the hard drive noise was about (it now seems to be gone)....or why the clone wouldn't properly boot the computer, although it does now.


Edited by ryck (05/07/12 09:40 PM)
_________________________
ryck

iMac (Retina 5K, 27", 2017), 3.4 GHz Intel Core i5, 8GB RAM, 2400 MHz DDR4
OS Mojave 10.14.6
Canon MX710 Printer
Epson Perfection V500 Photo Scanner
Time Machine on 1TB LaCie USB-C
Carbon Copy Clone on 500GB OWC Mercury OTG Pro

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#21851 - 05/08/12 02:26 AM Re: Hard Drive Puzzler [Re: ryck]
jchuzi Online


Registered: 08/04/09
Loc: New York State
For the noise issue, see if anything at this site rings a bell.
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OS 10.14.6, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365

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#21852 - 05/08/12 06:08 AM Re: Hard Drive Puzzler [Re: ryck]
joemikeb Online
Moderator

Registered: 08/04/09
Loc: Fort Worth, Texas
Since you have TechTool Pro, I would run their S.M.A.R.T. test to see if any of the parameters are out of line. TechTool reports the individual S.M.A.R.T. values and not just the relatively useless aggregate score and the last drive I had fail passed the aggregate test, but failed one of the individual test parameters. I would also run the Surface Scan to see if there are any bad sectors on the disk. The surface scan is, by far, the best indicator of impending hard drive failure.
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#21853 - 05/08/12 07:35 AM Re: Hard Drive Puzzler [Re: jchuzi]
ryck Online


Registered: 08/04/09
Loc: Okanagan Valley
Originally Posted By: jchuzi
For the noise issue, see if anything at this site rings a bell.

Thanks. I didn't hear anything like my sound but I've bookmarked the site for future reference. I have to say, some of those sounds were pretty scary and I think one even sounded like a car I once owned.


Edited by ryck (05/08/12 07:39 AM)
_________________________
ryck

iMac (Retina 5K, 27", 2017), 3.4 GHz Intel Core i5, 8GB RAM, 2400 MHz DDR4
OS Mojave 10.14.6
Canon MX710 Printer
Epson Perfection V500 Photo Scanner
Time Machine on 1TB LaCie USB-C
Carbon Copy Clone on 500GB OWC Mercury OTG Pro

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#21855 - 05/08/12 07:38 AM Re: Hard Drive Puzzler [Re: joemikeb]
ryck Online


Registered: 08/04/09
Loc: Okanagan Valley
Originally Posted By: joemikeb
Since you have TechTool Pro, I would run their S.M.A.R.T. test to see if any of the parameters are out of line

Originally Posted By: joemikeb
I would also run the Surface Scan to see if there are any bad sectors on the disk. The surface scan is, by far, the best indicator of impending hard drive failure.

Done and done.

The SMART Test gave a pass on all factors and the Surface Scan didn't find even one bad sector. I'm starting to wonder if I just experienced a bit of aberrant behaviour - with the drive, that is, not me.


Edited by ryck (05/08/12 07:40 AM)
_________________________
ryck

iMac (Retina 5K, 27", 2017), 3.4 GHz Intel Core i5, 8GB RAM, 2400 MHz DDR4
OS Mojave 10.14.6
Canon MX710 Printer
Epson Perfection V500 Photo Scanner
Time Machine on 1TB LaCie USB-C
Carbon Copy Clone on 500GB OWC Mercury OTG Pro

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#21859 - 05/08/12 10:50 AM Re: Hard Drive Puzzler [Re: ryck]
joemikeb Online
Moderator

Registered: 08/04/09
Loc: Fort Worth, Texas
The sound may not be the hard drive. Sometimes it is difficult to tell. If you are still covered under AppleCare I would take it in if the noise recurs.
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#21871 - 05/08/12 01:38 PM Re: Hard Drive Puzzler [Re: ryck]
Virtual1 Offline


Registered: 08/04/09
Loc: Iowa
The two big noisemakers are fans and hdd. If the hdd is having a bearing going out it can develop a nice loud hum that can come and go. SMART is mostly worthless for this, don't rely on it. Besides trying to narrow the location of the noise, keeping a good current backup is your best course of action.
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