Upon trying to make a startup disk (USB) for Ubuntu 12.04, the system prevented boot loader installation. I'm getting message:
Error synchronizing after initial wipe: Timed out waiting for object (udisks-error-quark, 0)
Can I still use the startup disk?
This has been reported as a bug. But you can try this work around and see if it works. Install Gparted if you don't have it installed. If its not, just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:
Once installed, open the application, and before formatting, make sure that you choose the right drive, and Unmount the disk by right clicking on the partition, and choose Unmount, then you can use the format To option, to format it to whatever type of file system you wish. Once done click on the green check mark to apply the changes.
A weird solution that worked for me where GParted did not, was to format it using Mac OS X's Disk Utility initially (not the file system I ultimately wanted). Then I was able to format it on Ubuntu to NTFS which is what I wanted, and didn't encounter any timeout.