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The disk you inserted was not readable by this computer (High Sierra only)

GA-X58A-UD3R disk not readable high sierra The disk you inserted was not

Best Answer snifferdog, 29 September 2017 - 03:14 PM

I had a similar problem and I solved it by using AppleAHCIPort.kext from 10.12.6.  You will need to disable SIP to copy it over.

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#1
Electronshaper

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Mobo: GA-X58A-UD3R
CPU: XEON X5650
 
Successfully upgraded from Sierra to High Sierra.
 
I have 3 drives on this box. A small SDD for the main system, another drive for all my data and a third drive with a bootable backup of my previous Sierra in case things get messy with High Sierra. 
 
That backup disk has its own bootable EFI partition with Clover. 
 
The issue: After upgrading to High Sierra the backup Sierra disk doesn't initialize. I get the message "The disk you inserted was not readable by this computer", and hitting initialize doesn't seem to do anything.
 
The drive shows up on clover at boot, and the Sierra backup boots just fine. I'm wondering if High Sierra has any additional protections that are preventing the partitions to mount (like detected previous system files or maybe the other drive EFI boot partition). Diskutil can see the HD as disk2, but doesn't show any of the partitions. I never had this issue previously on Sierra, Yosemite or any other previous OSX.
 
The other disk with just data (no EFI or system files) is showing up fine instantly, so I really don't believe it is a driver issue.
 
Any clue of what might be causing this, and more importantly, how to solve it?
 
Thanks, folks!
 
 
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#2
snifferdog

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Best Answer

I had a similar problem and I solved it by using AppleAHCIPort.kext from 10.12.6.  You will need to disable SIP to copy it over.



#3
enlaid

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Disable hot plug for HDD in BIOS if you can.



#4
herbert456

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Interesting, have the (nearly) same issue but no solution so far. The SSD for the base system works fine, an HDD where I have a data partition and a bootable partition with an older macOS (el capitan) just appears as unrecognized in High Sierra:

diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *240.1 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS ssdmac                  239.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *1.0 TB     disk1
   1:               Windows_NTFS System-reserviert       524.3 MB   disk1s1
   2:               Windows_NTFS                         999.7 GB   disk1s2

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                                                   *1.0 TB     disk2

In Sierra everything was fine (although disk2 was mentioned as external, didn't care :) )

 

I can boot disk2 from clover just fine. But when booting HighSierra from my SSD the disk2 is not recognized, strange....



#5
Electronshaper

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I had a similar problem and I solved it by using AppleAHCIPort.kext from 10.12.6.  You will need to disable SIP to copy it over.

 

YES!!! That did it man! Thank you so much! :-)



#6
herbert456

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Took the AppleAHCIPort from here: http://www.insanelym...leahciportkext/

All disks are back, nice :)







Also tagged with one or more of these keywords: GA-X58A-UD3R, disk not readable, high sierra, The disk you inserted was not


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