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
Moving in a different direction... I manually updated the boot.wim file as described here:
http://codeabitwiser.com/2014/03/how-to-install-windows-7-with-only-usb-3-0-port s/
This allowed me to get the install process going. When the boot camp process initiated post install however, it hung on a corrupt ATI driver. I'm about to reboot and try aborting the post install bootcamp install and see if I can get to the desktop.
Posted on Jul 14, 2015 12:00 PM