[Errno 2] No such file or directory: 'grub-install': 'grub-install'

[Xphobia]

Issue Reproduce Instructions

1. Launch WoeUSB by running command

woeusb --verbose  --tgt-fs NTFS --device en_windows_server_2012_vl_x64_dvd_917758.iso /dev/sdb

2. Output with errors
   

Expected Behavior

No error

Current Behavior

WoeUSB errors with message "[Errno 2] No such file or directory: 'grub-install': 'grub-install'"

Info of My Environment

WoeUSB Version

v0.2.6

WoeUSB Source

Built from source code, v0.2.6

Information about the Operating System

Tested in Vmware guest, CentOS Linux release 7.6.1810 (Core)

Information about the Source Media

en_windows_server_2012_vl_x64_dvd_917758.iso

Information about the Target Device

A Vmware scsi disk

Debugging

In the test environment(Centos7.6), there is no command named 'grub-install', 'grub2-install' exists.
I go through the source code and find where it happens. It happened in function 'check_runtime_dependencies' in file WoeUSB/utils.py, where called shutil.which() to judge which command to use.

It's the if clause matter. when a command, say, 'grub-install' does not exists, shutil.which() returns None instead of ''.
I tested shutil.which() in python3 interpreter.

It's a convention to write such kind of if clause as follows

·```
grub = ["grub-install", "grub2-install"]
for command in grub:
    if shutil.which(command):
        grub = command
        break
```

or

·```
grub = ["grub-install", "grub2-install"]
for command in grub:
    if shutil.which(command) is not None:
        grub = command
        break
```

[WaxyMocha]

Hi, sorry for that delay in response, also thank you for providing solution! I will test it and push the fix.

[RUvlad1]

I'm having the same problem, I'm on Pop!_OS using the GUI option

[Xphobia]

I'm having the same problem, I'm on Pop!_OS using the GUI option
It's fixed in the latest version. what's your version ?

[WaxyMocha]

I don't think that this is an issue here, from quick googling it turns out that pop doesn't use grub so it makes sense that it will be missing. @RUvlad1 Can you try to install grub package and try again? If it would work, can you post what package it was?

[therealaleph]

I'm having the same problem, I'm on Pop!_OS using the GUI option

sudo apt-get install grub2-common