crwdns2934243:0crwdne2934243:0 Dan crwdns2934247:0crwdne2934247:0

crwdns2947189:0crwdne2947189:0:

How do I split Fusion drive on Mojave / APFS?

crwdns2934249:0crwdne2934249:0:

Hello.

I have a 2013 iMac that has a Fusion drive. I want to replace its internal HDD with an SSD. My understanding is that I should split the Fusion drive before performing this.

I referred to the article https://www.macworld.com/article/2015664/storage-flash/how-to-split-up-a-fusion-drive.html which discusses the use of diskUtil and Core Storage to get the GUIDs and split the drive.

However, invoking '''disktutil coreStorage list''' returned ‘No CoreStorage logical volume groups found’. I then tried '''diskutil list''', which returned  more information, apparently showing the fused drives as '''‘synthesized’.''' I read a bit about this in other discussions, and it seems like this is perhaps a Mojave/APFS version of a Core Storage Fusion  config.

I’m wondering what I need to do to split my Fusion drive. Is there something else to use, or do I not even need to split the HDD/SSD before replacing the HDD?

Thanks.

-Allan

=== Update (12/22/2018) ===

I wonder if I need to downgrade it to High Sierra, and setup the drive as HFS?

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" EMC 2639

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open

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crwdns2947189:0crwdne2947189:0:

How do I split Fusion drive on Mojave / APFS?

crwdns2934249:0crwdne2934249:0:

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" EMC 2639

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 young

crwdns2947189:0crwdne2947189:0:

crwdns2934249:0crwdne2934249:0:

Hello.

I have a 2013 iMac that has a Fusion drive. I want to replace its internal HDD with an SSD. My understanding is that I should split the Fusion drive before performing this.

I referred to the article https://www.macworld.com/article/2015664/storage-flash/how-to-split-up-a-fusion-drive.html which discusses the use of diskUtil and Core Storage to get the GUIDs and split the drive.

However, invoking '''disktutil coreStorage list''' returned ‘No CoreStorage logical volume groups found’. I then tried '''diskutil list''', which returned  more information, apparently showing the fused drives as '''‘synthesized’.''' I read a bit about this in other discussions, and it seems like this is perhaps a Mojave/APFS version of a Core Storage Fusion  config.

I’m wondering what I need to do to split my Fusion drive. Is there something else to use, or do I not even need to split the HDD/SSD before replacing the HDD?

Thanks.

-Allan

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" EMC 2639

crwdns2915684:0crwdne2915684:0:

open

crwdns2934241:0crwdne2934241:0 young

crwdns2947189:0crwdne2947189:0:

How do I split Fusion drive on Mojave?

crwdns2934249:0crwdne2934249:0:

Hello.

I have a 2013 iMac that has a Fusion drive. I want to replace its internal HDD with an SSD. My understanding is that I should split the Fusion drive before performing this.

I referred to the article https://www.macworld.com/article/2015664/storage-flash/how-to-split-up-a-fusion-drive.html which discusses the use of diskUtil and Core Storage to get the GUIDs and split the drive.

However, invoking '''disktutil coreStorage list''' returned ‘No CoreStorage logical volume groups found’. I then tried '''diskutil list''', which returned  more information, apparently showing the fused drives as '''‘synthesized’.''' I read a bit about this in other discussions, and it seems like this is perhaps a Mojave/APFS version of a Core Storage Fusion  config.

I’m wondering what I need to do to split my Fusion drive. Is there something else to use, or do I not even need to split the HDD/SSD before replacing the HDD?

Thanks.

-Allan

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" EMC 2639

crwdns2915684:0crwdne2915684:0:

open