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[Sticky] Mojave does not support booting from RAID volumes  

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Posts: 2206
Moderator
(@softraid-support)
Member
Joined: 5 years ago

With the release of 10.14 Mojave, users can no longer startup from RAID volumes. This includes any SoftRAID volume and Apple RAID volumes.

There is no workaround for this, and we do not expect there to be a solution going forward.

We had several discussions with Apple to see if they would re-enable booting in the future, but the chances are slim to zero.

Prepare to migrate your startup volumes to Apple standard volumes before attempting to install Mojave.

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Posts: 19
 Nubo
Customer
(@nubo)
Active Member
Joined: 4 years ago

Note: the new OS is "Mojave".

(Thanks - we fixed that typo - ed.)

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Posts: 2
(@henkkeygnaertgmail-com)
New Member
Joined: 2 years ago

Currently I have this setup:
- iMac 21, 2015, 1TB fusion drive (28GBSSD/5400 HDD)
- Thunderbay mini, 4*250 GB SSD, thunderbolt 2, with softraid lite 5.7, (4*SSD in RAID 0)
I use the Thunderbay as a startupdisk/main drive and the fusion drive as a backup disk (carbon copy).

Because Mojave doesn’t support booting from RAID volumes:

- Should I stay with the setup as it is, and consequently stay with High Sierra?

Or maybe:

- Use one SSD in the Thunderbay as a startup disk, the three others in RAID 0 as home/data drive, the internal fusion drive as backup and upgrade to Mojave? I read some negative posts on speed of external SSD’s in APFS?

or?
thanks!

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Posts: 2206
Moderator
(@softraid-support)
Member
Joined: 5 years ago

- Use one SSD in the Thunderbay as a startup disk, the three others in RAID 0 as home/data drive, the internal fusion drive as backup and upgrade to Mojave? I read some negative posts on speed of external SSD’s in APFS?

or?
thanks!

This is probably your best option. Older computer with Fusion drives is not something I would trust for reliability, too much can go wrong.

Or replace the SSD/HDD in your iMac with a newer, higher capacity, high speed SSD. Use that for booting. then the HDD can be backup, as well as the external Stripe volume. (and subscribe to a backup system like BackBlaze.)

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Posts: 5
Customer
(@nightwatch)
Active Member
Joined: 4 years ago

With the release of 10.14 Mojave, users can no longer startup from RAID volumes. This includes any SoftRAID volume and Apple RAID volumes.

There is no workaround for this, and we do not expect there to be a solution going forward.

We had several discussions with Apple to see if they would re-enable booting in the future, but the chances are slim to zero.

Prepare to migrate your startup volumes to Apple standard volumes before attempting to install Mojave.

But iMac Pros boot off a two flash SSD RAID don't they? I mean I know they do (I thought). Is that not a RAID? The 4TB version contains two 2TB m.2 SSDs. Or is it a JBOD? Strange.

Thanks,
Steve

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