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(SOLVED): Error creating MacOS High Sierra bootable USB

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I'm trying to create a bootable High Sierra USB using UniBeast 8.1.0, but it fails every time.

Any suggestions on how I can solve the problem?

I got a 8gb usb-drive and a Macbook Pro 15" (late 2016)
 

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P1LGRIM

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Does not require Buying Advice - Moved to UniBeast.
 
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I don't understand this: Replace USB-Device with the device name of your destination volume, i.e. /dev/disk2

What is i.e. /dev/disk2?
 

P1LGRIM

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What is i.e. /dev/disk2?
Open the Terminal app and type :
Code:
diskutil list
Press return.

You should now be able to discern the identity of your destination volume.
 
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Now I have tried to do that and replace the names from point 19 with what I think is correct and Terminal says this that I dont understand much of..


Usage: diskutil partitionDisk MountPoint|DiskIdentifier|DeviceNode

[numberOfPartitions] [APM[Format]|MBR[Format]|GPT[Format]]

[part1Format part1Name part1Size part2Format part2Name part2Size

part3Format part3Name part3Size ...]


(Re)Partition an existing disk. All volumes on this disk will be destroyed.

Ownership of the affected disk is required.


For the partition scheme parameter:

APM specifies that an Apple Partition Map scheme be created.

MBR specifies that a DOS-compatible format scheme be created.

GPT specifies that a GUID Partitioning scheme be created.

APMFormat and APMScheme are synonyms for APM; the same applies to the others.


For each partition triplet:

Format is normally the file system personality used to set the

partition type and to choose the initialization (newfs) program.

"diskutil listFilesystems" shows a list of supported personalities.

Alternatively, you can specify "Free Space" to leave a gap.

Or you can explicitly specify the partition type (either as a human-

readable string or as a GPT UUID constant) surrounded by "%".

Explicitly specifying the type or Free Space implies %noformat% (below).

Name is the initial volume name (subject to file system-specific naming

restrictions). You can also specify %noformat% to skip initialization

(newfs). If the format (above) is "Free Space" or an explicit partition

type, the name is ignored, but it must still be present.

Size is the length of the partition (slice); the exact resulting size may

be somewhat larger or smaller as necessary in certain cases.


Valid sizes are floating-point numbers with a suffix of B(ytes), S(512-byte-

blocks), K(ilobytes), M(egabytes), G(igabytes), T(erabytes), P(etabytes),

or (%)percentage of the total size of the whole disk; also, at most 1 triplet

can specify a size of "R" (without a preceding number) to specify the remainder

left on the whole disk after considering the other sizes.


The last partition will be lengthened to the end of the disk; to specify an

exact size for the last usable partition, specify an additional partition

of type "Free Space".
 

P1LGRIM

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Terminal says this that I dont understand much of..
That just means that you entered the command incorrectly, try again.
 
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Hvis is what the diskutil list command gives me.

Hvis is what I wrote in terminal:

sudo diskutil partitionDisk /dev/disk2 GPT JHFS+ USB R

I don't know what is wrong with it..
 

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Your disk is format as MBR.

If you choose UEFI install it must be formatted as GUID Partition Map.
Which format should I then choose in Disk Utility to get the drive formatted as a GUID Partition Map?
 
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