kfoelsch

Q: Not finding boot usb 2.0 stick on late 2014 iMAC with Fusion Drive

I get an error after running boot camp on black screen "NO BOOTABLE DEVICE - INSERT BOOT DISC AND PRESS ANY KEY"

 

My drives look like this:

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *121.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage                         121.0 GB   disk0s2

   3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

/dev/disk1

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *1.0 TB     disk1

   1:                        EFI EFI                     209.7 MB   disk1s1

   2:          Apple_CoreStorage                         999.3 GB   disk1s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s4

/dev/disk2

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           *1.1 TB     disk2

                                 Logical Volume on disk0s2, disk1s2

                                 6EEE56D2-36F7-4C10-AD4C-AA4E1034738B

                                 Unencrypted Fusion Drive

/dev/disk3

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *4.0 TB     disk3

   1:               Windows_NTFS My Book                 4.0 TB     disk3s1

/dev/disk4

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *8.0 GB     disk4

   1:                 DOS_FAT_32 WININSTALL              8.0 GB     disk4s1

/dev/disk5

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *240.1 GB   disk5

   1:                        EFI EFI                     209.7 MB   disk5s1

   2:                  Apple_HFS ExtMacFlash             49.7 GB    disk5s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk5s3


--

sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 236978175

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  236306352      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  236715992     262144      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  236978136          7        

  236978143         32         Sec GPT table

  236978175          1         Sec GPT header

--

The thing is that I've been able to once boot to my USB stick... and when I did it was only by using rEFind... and I didn't have keyboard drivers.  This has not been replicatable.  When I boot with the mac bootloader, it doesn't see the USB stick.  reFInd sees it... and then I get the error message above.  What next?

 

I know my ISO is good because I have windows 7 running in a VM.

iMac with Retina 5K display, OS X Yosemite (10.10.4), Boot Camp

Posted on Jul 13, 2015 9:00 PM

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Q: Not finding boot usb 2.0 stick on late 2014 iMAC with Fusion Drive

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