What are the advantages of making external hard drive bootable?
The first one is that you could use a bootable external hard drive to boot the unbootable computer.
Why Do you should probably Make External Hard Drive Bootable Windows 10?

There are a number of important reasons for users to make external hard drive bootable Windows 10.
I have listed some reasons below.
How to Make External Hard Drive Bootable Windows 10?

How to make a Windows 10 bootable external drive?
There are two methods for you.
And Windows provides two built-in features to make a bootable external hard drive.

The method is below.
Step 2: Typecontrol panelin the search box at first and clickControl Panelto continue.
Step 4: Choose the drive you want to use inCreate a Windows To Go workspacewindow.

Then choose it and clickNextto continue.
Step 6: Choose whether to set a BitLocker password.
If not, clickSkipto continue.

Remember toback up important filesbefore clickingCreate.
If you want to test whether the USB drive is bootable, chooseYesand clickSave and restart.
If not, selectNoand clickSave and close.

After these operations, you’re able to make USB drive bootable Windows 10.
But there are limitations that dont suit everybody.
There are two things you gotta do to make external hard drive bootable Windows 10.

Step 1: Insert the external hard drive into your gear.
Typecmdin the search box and right-clickCommand Promptand chooseRun as administratorto continue.
Step 2: you better format the external hard drive first.

Step 1: TypeGand pressEnterin Command Prompt window at first, then entercd bootand pressEnter.
Step 2: Enterbootsect /nt60 Hand pressEnter.
Then typeexitand pressEnterto close Command Prompt.
As you could see, this method is too troublesome.
And if you enter the wrong instructions, your gear could get in trouble.
You may even lose your data, but you’re able to use third-party software torecover data.
So, you should remember to back up your precious data in advance.
If you have any better advice or confusion, just send an email to[email protected].