JanKost
commented
4 years ago This answer is pretty late, but maybe someone can still use it:
I ran into the "No partitions located on disk!" error too, with a brand spanking new Win 10 install, no meddling thrid party software and a bunch of different USB drives. It only happened in my case if I used the "g" option in the main menu. MBR worked fine, curiosly. Anyhow, I got hella frustrated about the lack of a solution & tinkered around a bit. It looks like Windows is naughty and sneaks in a system reserved partition whenever it can. This happened in my case specifically when running the DiskPart command "convert gpt" on an empty disk after cleaning it. It also happened when creating a new partition that was smaller than the available unallocated space. Now, if you look at "diskpart_erase" in MakeInstall.py, assuming "gpt" is true, it calls the DiskPart commands "clean" followed by "convert gpt" and then "create partition primary size=200". I assume corp expects this to create partition 1. There is, however, already a hidden MSR partition 1 (created when running "convert gpt"), so your BOOT partition is actually partition 2, and your empty HFS+ partition becomes partition 3. I didn't dig into the code deep enough to find out when and why this causes a failure, but I was able to work around the issue in my case by modifying the diskpart-skript for gpt disks in "diskpart_erase". I changed the contents of dp_script = "\n".join([...]) in MakeInstall.py from:
"select disk {}".format(disk.get("index",-1)),
"clean",
"convert gpt",
"create partition primary size=200",
"format quick fs=fat32 label='BOOT'",
"create partition primary id={}".format(self.hfs_id)
(as seen highlighted in the screenshot below) to:
"select disk {}".format(disk.get("index",-1)),
"clean",
"convert gpt",
"sel part 1",
"del part override", #remove cheeky autogenerated MSR partition
#workaround to prevent Windows from placing an MSR partition in front of our new BOOT partition
"create partition primary", #hog all space
"sel part 1",
"shrink", #free all space
"extend size=200", #extend to 200MB
"create partition primary",
"sel part 2",
"set id={}".format(self.hfs_id),
"sel part 1",
"format quick fs=fat32 label='BOOT'",
"assign"I could then sucessfully run the remainder of MakeInstall for Catalina on two different USB drives that prevoiusly failed with the no partition error. Note that I used the openCore option instead of Clover.
Mathis436
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