External Hard Drive incredibly slow after High Sierra

Absolutely fuming isn't the word, ever since Apple stopped making us pay for updates they have been buggy garbage.


Rant over: I'm experiencing a very slow external HDD which is used for files after this update. If I do not have it connected, my iMac works fine. As soon as I connect it and want to browse, it freezes a lot, takes an age to load contents, sometimes even taking 2 minutes. I thought maybe it was because it is indexing, I left it for several hours but it still wont work properly.

Activity Monitor shows high CPU usage with kernal task & iconserviceagent when trying to load these folders, the HDD also makes a lot of noise as if it's under high load.


I've tried upgrading it to APFS which can be done on a HDD, no idea why people say it cannot be done as it has been done with mine! - still no improvement.



Really no idea why I trusted another update, think i'll leave it next time, Sierra brought bugs and High Sierra has totally ruined my computer. My iMac is 21.5 late 2013 with an SSD upgrade. My external HDD is a 3TB Seagate HDD.


Any help, or people with the same issues?

iMac

Posted on Sep 26, 2017 6:08 AM

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Question marked as Top-ranking reply

Posted on Sep 26, 2017 5:03 PM

You can try clearing the icon cache:

Triple-click anywhere in the line below on this page to select it:

/Library/Caches/com.apple.iconservices.store

Right-click or control-click the highlighted line and select

Services Reveal in Finder (or just Reveal)

from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. You may be prompted for your administrator login password. Restart the computer and empty the Trash.

*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select

Go Go to Folder...

from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

164 replies

Dec 12, 2017 3:59 AM in response to UrbanKaos

Well, this would be a good work around if it wasn't £10 for the full thing, and I wont pay that when Apple should have this issue resolved or not even existing in the first place! Plus that app wont give the exact results I want either..


High Sierra has got to be the worst update i've ever had in my opinion... I am very reluctant to update next year.

Dec 12, 2017 4:07 AM in response to J4MMYz

Totally agree, Apple should 100% have this sort of thing already available.


I've just made the 2 bug reports, i'm in 2 minds right now whether to upgrade or not, fair enough I can live without the custom thumbnails for a bit (if Image2Icon doesn't work), but if current ones still take ages to load or transferring files from the desktop to an EHD still take 35-45 minutes for 1 file then I might end up throwing this out the window, as it isn't an easy process having to back everything up and then downgrade YET AGAIN and then have to get all my files back and apps back etc etc.


But with my font issue at the moment on Sierra... it's driving me nuts.

Dec 12, 2017 4:13 AM in response to UrbanKaos

The mac seems evermore like it's on the lowest priority list for Apple. The software has got worse and worse each year, with very little changing/improving. iOS on the other hand is always strong, stable and generally great with new features/design changes... mac hasn't changed much at all, which would be great if it was working 100%.


I've said it before and i'll say it again, the software seems to be worse now we don't pay for updates, when I paid for an update for the mac it was bugless. The amount of small bugs/glitches on the mac are ruining it, and not good enough for an Apple product that costs thousands. Joke!



Anyway, enough of the rants - thank you for reporting it, it's up to you if you want to update to High Sierra as now the performance issue is sorted it's ok to use, you just wont be able to make new custom icons.

Dec 12, 2017 5:28 AM in response to J4MMYz

It seems to be all about new Laptops, Phones and iPads now, even the look of the iMacs remain the same, they could at least make the black surround around the screen smaller, fair enough they made the screen itself thinner compared to the thicker models but still, looking from the front, it's still the same, and as you said regarding the OS's, its bug after bug at times, so yeah... still in 2 minds what to do right now, if I upgrade again then it MIGHT all work for me, happy days, but on the other hand the update might not fix things for me and the custom thumbnails from that app might not work properly, but on the other hand if I do upgrade then at least I can view websites properly without the Sierra font issue I got, argh!

Dec 24, 2017 2:53 PM in response to J4MMYz

I wrote here some weeks ago that i was experiencing the same problem. Then I updated OSX and I wrote that the problem was fixed. Well, it's not fixed at all. The mac returned to be incredibly slow on external HDs. And it's not just that icons loading... I can't work on external HD files. I must copy them on my internal HD SSD otherwise it's impossible to work! A Photoshop file (300MB) takes 2 minutes to be opened from the external HD while once copied on the internal HD it takes less than 8 seconds. Very disappointing.

Dec 24, 2017 4:02 PM in response to AbeOdd

Same here...-- I still have the same issue, and any Apple help I call, I get the reply that all is good on their side, it is my external drives, it is my installation, it is my apps I installed... has NOTHING do to with OS X or apple itself. EXTREMELY FRUSTRATING!

I have several RAIDS, and usually copying a file of a few GB takes seconds,... now it is minutes! Working in Lightroom is a pain now, as Lightroom can needs the data when accessing external Media... it is so so slow, you just sit here and do not know what to do!!!!!

Jan 8, 2018 2:03 PM in response to nvdd

Amazing that the burden is on us to explain in detail the issue. Hey Devs, try to add a custom icon to a video file and you will see what everyone is talking about. How hard is that? You want a detail? OK. Click on a file. When the file is highlighted you see a shaded square. When you add a custom icon, it fills the entire square and distorts the image. Now go and do it yourself.

Jan 16, 2018 4:58 PM in response to J4MMYz

I'm not sure, but I think I may have a similar problem.

Ever since the update to High Sierra, attempting to save anything to USB is extremely slow.

Doesn't matter if it is a rotating hard drive or flash memory. I have tried USB2 & USB 3 drives with no difference.

I cannot sync iTunes to my old phone nor my brand new phone without it stalling and having to restart iOS.

I just backed up my old phone using iTunes on a USB cable. Took about 15m to do the initial encrypted backup, then around three hours to copy it back to the new phone.

Reading from USB is a little slow, writing via USB is mind numbingly slow. USB is now pretty much unusable.

Apr 9, 2018 8:57 AM in response to J4MMYz

I agree with you. It's not your drive. I use a zip drive for simple excel budget spread sheet. After downloading high sierra a few days ago this drive runs and runs about 2 min after adding just 1 or 2 cells of digits. I get the same notices. Verifying file, finder using drive, spinning color wheel etc. I have many zip disks and all run the same. It's not rocket science just software. After a few minutes of running the drive will eject. Again why the slowdown?

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External Hard Drive incredibly slow after High Sierra

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