Updating Partition table failed with exit code 255

Winclone
1

Hello,

My system is iMac12,2 (late 2011, 27’’). I am having problems restoring an image of a bootcamp partition (Windows 7 Home) on a 1TB SSD drive, with macOS Sierra (latest) on the OSX partition (of about 700GB) and 300GB Bootcamp partition. The Bootcamp partition was created with Bootcamp Assistant. I see the following error in the logs at the very end of the restore:

Aug 21 10:33:04 watazumi Winclone[582]: +++++++++++++++++++++++++++++++Making Bootable+++++++++++++++++++++++++++++++
Aug 21 10:33:05 watazumi Winclone[582]: step is 4
Aug 21 10:33:05 watazumi Winclone[582]: Getting Partition Type completed successfully!
Aug 21 10:33:05 watazumi Winclone[582]: done copying BCD file
Aug 21 10:33:05 watazumi Winclone[582]: +++++++++++++++++++++++++++++++Saving Partition Type+++++++++++++++++++++++++++++++
Aug 21 10:33:05 watazumi Winclone[582]: 0x0B
Aug 21 10:33:05 watazumi Winclone[582]: step is 5
Aug 21 10:33:05 watazumi Winclone[582]: Copying BCD File completed successfully!
Aug 21 10:33:05 watazumi Winclone[582]: +++++++++++++++++++++++++++++++Updating Partition Table+++++++++++++++++++++++++++++++
Aug 21 10:33:05 watazumi Winclone[582]: 
Aug 21 10:33:05 watazumi Winclone[582]: step is 6
**Aug 21 10:33:05 watazumi Winclone[582]: Updating Partition table failed with exit code 255!**
Aug 21 10:33:05 watazumi Winclone[582]: Mounting /dev/disk0s4
Aug 21 10:33:06 watazumi Winclone[582]: Mounting /dev/disk0s4 Finished
Aug 21 10:33:06 watazumi Winclone[582]: Setting the system to allow sleep...

The Bootcamp partition also does not appear in the list of bootable partitions when restarting the mac with option key pressed. However it is visible in Disk Utility as well as Finder and even shows up as selectable startup disk in System Preferences. This leaves me a little confused.

What can I do to make the Bootcamp partition bootable?

2

That is usually a sign that SIP was enabled and Winclone can’t update the partition table. Try disabling SIP and try again.

tim

3

Thanks, but I already discarded that possibility. The only way I was finally able to get Windows back on the iMac was to use VMWare, use the Bootcamp partition as raw disk and install through the VM. Booting with reFIND. The backed up partition is perfectly useless to me. Any attempts at restoring the image via WinClone result in an unbootable partition.