Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

rabbarba

macrumors newbie
Original poster
Mar 23, 2020
6
1
I have a late 2014 iMac 27" that was shipped with 3TB fusion. The 3TB disk died so i replaced it with a 2,5" SATA 1TB Crucial MX500 SSD. Prior to installing the 1TB Crucial SSD, i installed MacOS Mojave on the separate 128GB Blade SSD and used it like that for a couple of months with no hiccups.

I have MacOS Mojave installed on the 1TB Crucial disk, it works perfectly.
I also installed Windows 10 through Boot Camp on the 128GB Apple Blade SSD. Booted into windows a couple of times, worked ok.

Quite soon, the bootcamp partition started disappearing a couple of minutes after rebooting into MacOS. A restart made it come back a couple of times, but now it is completely gone.

It's not visible in terminal, diskpart list
It's not visible in disk utility.
It's not visible in disk utility when booting from a bootable Mojave USB or High Sierra USB.
It's not visible when booting from Windows 10 USB drive
It's not visible in the software DriveDX
Apple Diagnostics (holding D when booting) shows no errors. However, it reported a problem with SMC once when the drive started disappearing after booting into MacOS with Win 10 installed onto the blade SSD.

I have boot rom version 232.0.0.0.0
I have SMC version 2.22f16
iMac 15.1
EFI version IM151.88Z.F000.B00.1912181731

Is there anything I can do? Is there a chance that I can see the drives if using target disk mode with another mac?
 

davidlv

macrumors 68020
Apr 5, 2009
2,291
874
Kyoto, Japan
I have a late 2014 iMac 27" that was shipped with 3TB fusion. The 3TB disk died so i replaced it with a 2,5" SATA 1TB Crucial MX500 SSD. Prior to installing the 1TB Crucial SSD, i installed MacOS Mojave on the separate 128GB Blade SSD and used it like that for a couple of months with no hiccups.

I have MacOS Mojave installed on the 1TB Crucial disk, it works perfectly.
I also installed Windows 10 through Boot Camp on the 128GB Apple Blade SSD. Booted into windows a couple of times, worked ok.

Quite soon, the bootcamp partition started disappearing a couple of minutes after rebooting into MacOS. A restart made it come back a couple of times, but now it is completely gone.

It's not visible in terminal, diskpart list
It's not visible in disk utility.
It's not visible in disk utility when booting from a bootable Mojave USB or High Sierra USB.
It's not visible when booting from Windows 10 USB drive
It's not visible in the software DriveDX
Apple Diagnostics (holding D when booting) shows no errors. However, it reported a problem with SMC once when the drive started disappearing after booting into MacOS with Win 10 installed onto the blade SSD.

I have boot rom version 232.0.0.0.0
I have SMC version 2.22f16
iMac 15.1
EFI version IM151.88Z.F000.B00.1912181731

Is there anything I can do? Is there a chance that I can see the drives if using target disk mode with another mac?
I have a slightly older iMac, the 13,2 model, and it has an EFI firmware higher than yours. Can you run the freeware SilentKnight to see what the firmware should be? <https://eclecticlight.co/2019/07/15...ienc-for-checking-and-updating-security-data/>
On my Mac: Mac model iMac13,2
EFI version found 289.0.0.0.0; expected 289.0.0.0.0
✅ EFI firmware appears up to date.
SMC Version (system): 2.11f14
I do not know if this will help you fix the real issue. It may be that the blade drive has died or the connection is faulty.
 

rabbarba

macrumors newbie
Original poster
Mar 23, 2020
6
1
Thanks for reply. I downloaded the tool and it says my EFI is the latest unfortunately. Going to try Catalina now to see if that changes anything
Screenshot 2020-03-23 at 18.26.52.png


Update:
I installed catalina, made no difference.
 
Last edited:

profcutter

macrumors 65816
Mar 28, 2019
1,395
1,068
Those blade drives do fail eventually, it could be that the drive is dead. Alternatively, maybe just got bumped and needs to be reseated. The one in my MBP started acting like it had a loose connection when it started to die.
 

rabbarba

macrumors newbie
Original poster
Mar 23, 2020
6
1
Those blade drives do fail eventually, it could be that the drive is dead. Alternatively, maybe just got bumped and needs to be reseated. The one in my MBP started acting like it had a loose connection when it started to die.

It seems like your ssd did the same thing as mine did, acting like it had a loose connection. I havent managed to get the computer to see the drive in a long time now, and I even tried installing Windows to the 2,5” sata crucial ssd to see if windows could see it but it didn’t.
I guess the drive is toast, will just leave it in the machine for now.
 

profcutter

macrumors 65816
Mar 28, 2019
1,395
1,068
Yeah that seems plausible. Hope you had it backed up or didn’t have anything important on it. Maybe next time you crack it open you could put in a new NVME drive.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.