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User profile for user: sachin_nair
sachin_nair Author
User level: Level 1
4 points

Unable to upgrade from El Capitan OS to High Sierra due to SSD disk space issue

Hello All,


I have an iMac Late 2015 model. Recently, Due a major software issue, I moved back to the original software i.e. El Capitan 10.11 with which I received my iMac.


I am unable to upgrade my software to El Capitan due to low disk space issue. My iMac has 1 TB however it resides in HDD and only 25 GB is visible in SSD. When I try and install the High Sierra on SSD it is not allowing me to install the OS, says I need additional 5 GB space.


Can someone help me fix this partition issue? My HDD has 1TB and SSD is showing only 25 GB and hence, I m unable to upgrade my software again. Can I somehow increase the memory allocation in SSD? Attaching some screenshots of the partition.


iMac 27″, OS X 10.11

Posted on Feb 19, 2023 7:07 AM

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User profile for user: BDAqua
BDAqua
User level: Level 10
245,261 points

Posted on Feb 19, 2023 10:29 AM

Hi there, it appears your Fusion drive has split...


Apple Support article About Fusion Drive, a storage option for some Mac computers.

If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.


In Terminal…

diskutil resetFusion

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User profile for user: BDAqua
BDAqua
User level: Level 10
245,261 points

Feb 19, 2023 10:29 AM in response to sachin_nair

Hi there, it appears your Fusion drive has split...


Apple Support article About Fusion Drive, a storage option for some Mac computers.

If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.


In Terminal…

diskutil resetFusion

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Unable to upgrade from El Capitan OS to High Sierra due to SSD disk space issue

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