what do you need to do by creating a bootable disk? for resetting your login password on Windows? If so, i will recommend some solutions blow to help you reset password.
Pen Drive Linux is an awesome tool, the link is already posted here, I'm just chiming in. It can install more than one OS from multiple iso files on a flash drive. Extremely useful if you dual or triple boot like I do. Ubuntu 12.10, Windows 7, Windows 8.
what will do by creating a password reset disk? For resetting your login password on Windows ?
You can reset Password By Use Of Other Administrator Accounts
There many people who don’t know how to change the password on Windows 10. For this purpose you require another working administrator account, on the off chance that you can log in your Windows by another account and this account has administrator benefit, you can reset windows 10 password without disk or USB.
Step 1.Log into the Windows with access able user account.
Step 2.Click on start – now type in CMD in the search box -> Now Right click cmd.exe and after that select Run as administrator.
Step 3.After that you have to type in Net User user_namenew_pasword in command prompt, to recover the password. Following this example – command Net User Mark pwd345 set password pwd345 for the account Ma.
if this method won't solve your issue, you still have other alternative solutions like free tool: ntpassword, wingeeker, ophcrack, labwin and more..
http://www.chntpw.com/download/
http://ophcrack.sourceforge.net/
https://www.tunesbro.com/reset-windows-10-password.html
https://www.passmoz.com/
and more...