Split Fusion Drive After Mojave Upgrade

[bslide]

Is there a good reason to have a Split Fusion Drive? After upgrading to Mojave, I found that my Fusion Drive had been split into two drives: Apple HDD (1TB Sata) and Mac HD (121 GB SSD). After working with Apple Support on the OS upgrade, I unintentionally ended up with Mojave OS and Application folders on both drives. I can see managing these two drives will be a challenge.

What is the better set-up: one fusion drive or two split drives? Had encountered slow starts until changing the startup drive to the Mac HD. I have called Apple Support again but I knew more than the Cust Serv person.

How hard will it be to join the two drives?

My first computer was a Apple 2 Plus back in the '80s. Numerous PCs since then till I came back Apple a few years ago.

Frustrated,
Bslide

Late 2014 iMac, Retina 5K 27" Display, 24 GB RAM, 1 TB Fusion Drive,121 GB SSD (Startup)

 

[Crunch]

Is there a good reason to have a Split Fusion Drive? After upgrading to Mojave, I found that my Fusion Drive had been split into two drives: Apple HDD (1TB Sata) and Mac HD (121 GB SSD). After working with Apple Support on the OS upgrade, I unintentionally ended up with Mojave OS and Application folders on both drives. I can see managing these two drives will be a challenge.

What is the better set-up: one fusion drive or two split drives? Had encountered slow starts until changing the startup drive to the Mac HD. I have called Apple Support again but I knew more than the Cust Serv person.

How hard will it be to join the two drives?

My first computer was a Apple 2 Plus back in the '80s. Numerous PCs since then till I came back Apple a few years ago.

Frustrated,
Bslide

Late 2014 iMac, Retina 5K 27" Display, 24 GB RAM, 1 TB Fusion Drive,121 GB SSD (Startup)

I personally always prefer having the split drives, because I like full control over the file system and what gets stored where. Plus, a straight SSD is always faster than a Fusion Drive, Apple's name for a hybrid "SSHD" that marries the capacity of a hard drive with the swiftness of an SSD.

Do you have a lot of large applications on your Mac? The reason you have the Applications folder on both drives may be due to the fact you've run out of space on your SSD.

Re-marrying the drives is usually done in Disk Utility, although you may have to format the drives and then re-install the operating system. Splitting them up is much harder and has to be done in Terminal and Disk Utility but from the Recovery area.

Best of luck.

 

[Fishrrman]

OP wrote:
"After upgrading to Mojave, I found that my Fusion Drive had been split into two drives: Apple HDD (1TB Sata) and Mac HD (121 GB SSD). After working with Apple Support on the OS upgrade, I unintentionally ended up with Mojave OS and Application folders on both drives. I can see managing these two drives will be a challenge."

Before going further, please do this and get back to us with the results.
1. Power down, all the way off
2. Press the power on key and IMMEDIATELY hold down the option key and KEEP HOLDING IT DOWN until the startup manager appears
3. Now look carefully at what's before you. Do you see one, two or three options from which to choose? What are the names of the options you see?