Bootcamp problem "There is not enough space available on the disk"

• Windows must be installed on the disk which is in the main bay of the Mac, not in the drive that replaced the Optical drive.
• You need to temporarily disconnect the second disk (in Optical bay) till Windows is fully installed. The Optibay disk should be disconnected from the disk side, not from the logic board side.
• Once Windows is installed and working, you ca then reconnect the Optibay disk and test Windows boot ability.

dfrzuz wrote:

the problem occurs when partion disk and suddenly appears nontification that I don't have enough storage on my external HDD, but I have 80 GB in my HDD and I haven't chosen partion disk so I don't know how much is used

Are you trying to install Windows on an external disk?

What is the current macOS version?

What is the name of the Windows ISO?

dfrzuz wrote:

For the year i use MacBook Pro (13-inch, Mid 2012)

Nice!

And for modified i just modified my floppy disk and changed with second storage

You removed your 'Optical' drive (DVD/CD ROM) and added a hard disk (or SSD). This will cause problems with BC Assistant.

What is the year/model of your Mac (do not post the serial number)?

Has any hardware been modified on the Mac?

Please post back if you run into any issues while trying to do this.