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"Disk full" error even though disk is not full

I'm trying to install software (TurboTax) and I keep getting the error "The operation can't be completed because the disk is full." But my hard drive is NOT full and has 161GB of space left. TurboTax doesn't even require 1GB of space. I have emptied the trash and restarted my computer, but I still keep getting this error. Why is this happening and how do I fix it?

iMac 21.5″, macOS 11.1

Posted on Jan 24, 2021 8:00 AM

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Posted on Jan 24, 2021 3:01 PM

Figured it out. I was getting errors about Time Machine and after some research I realized the two problems were connected and a result of me updating to Mac OS 11.1 last week. I followed the instructions below for using Terminal to delete Time Machine snapshots and after I did that Disk Utility started showing more free space on my hard drive, and the problems I was having went away.


[Link Edited by Moderator]

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Question marked as Top-ranking reply

Jan 24, 2021 3:01 PM in response to justpeachy

Figured it out. I was getting errors about Time Machine and after some research I realized the two problems were connected and a result of me updating to Mac OS 11.1 last week. I followed the instructions below for using Terminal to delete Time Machine snapshots and after I did that Disk Utility started showing more free space on my hard drive, and the problems I was having went away.


[Link Edited by Moderator]

Jan 24, 2021 8:37 AM in response to justpeachy

Is it an error presented by the TurboTax installer? If so, it would probably be the installer running an incorrect check for available space prior to attempting the install instead of allowing the file system to handle the error. You would need to talk to Intuit to ask them why they are reporting that error.


If it is coming from macOS, I don't know why.

Jan 24, 2021 10:57 AM in response to Barney-15E

I cannot open other pieces of software on my computer such as Photoshop. I was getting an error about the scratch disk being full, even after several restarts. Then I discovered that Disk Utility says I only have 17GB of space left. Not sure why there is such a huge discrepancy between that and the 161GB stated when I go to About This Mac, but that Disk Utility number doesn't change no matter how many files I delete or move to an external drive.

"Disk full" error even though disk is not full

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