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"Missing operating system"

Joined
Mar 18, 2019
Messages
3
Motherboard
Gigabyte Z97N-WIFI
CPU
i5-4690K
Graphics
RX580
I'm trying to create a hackintosh for the first time and after watching many videos, researching on the forums, and making sure my hardware is compatible, I created a boot USB drive using Unibeast. I then went into my computer's BIOS and made sure all of the settings were correct. Once I had everything double checked, I hit F10, then loaded into the boot menu, tried to boot from the USB and the only message appearing is, "Missing operating system". I went back into BIOS and checked the settings again, which ended up being correct, I also went back to the tonymacx86 forums to see any resolutions. I found some people who had this issue who just and to check their BIOS, reset the CMOS, switch to a USB 2.0 port, and create a GUID partition. The only one I didn't try was the GUID partition. Long story short, I have an error message that I want to resolve and I have not found any solutions so far. Any help is appreciated!

These are the specs for the PC that I'm making into a hackintosh:

Intel Core i5-4690K
16GB DDR3 Ballistix RAM
Gigabyte Z97N-WIFI Mobo
Asus Dual Series Radeon RX 580 4G
Seagate 250GB 7200RPM HDD (Going to replace soon)
750W Powerspec PSU
NZXT H200 (White/non i-series)
 

trs96

Moderator
Joined
Jul 31, 2012
Messages
12,922
Motherboard
GA-Z97X-UD3H-BK
CPU
i5-4690K
Graphics
HD4600 / RX 570
Mac
iMac, Mac mini
Mobile Phone
Android

Feartech

Moderator
Joined
Aug 3, 2013
Messages
10,404
Motherboard
Asus N752VX-Clover
CPU
i7-6700HQ / HM170
Graphics
HD530 + GTX 950m 1920 x 1080
Mac
iMac
Mobile Phone
Android
Joined
Jan 22, 2018
Messages
14
Motherboard
Gygabyte AORUS X299 Gaming 3
CPU
i9-7980XE
Graphics
RX480, GTX 1060
Mac
MacBook Pro
Mobile Phone
iOS
If it says it is missing the operating system it means just that. Your EFI partition is not properly set up and being recognized by your motherboard. One trick I've learned to get it to work properly is to boot into windows and use diskpart to clean the usb (wipes it completely clean) and then partition it in macOS after the fact, this will properly set up the partition scheme every time.
 
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