Create Bootable USB Flash Drive to Install Windows 10  

What would be a good size of USB 3.0 ? 4GB, 8GB, 16GB? I would like to try the USB option first.
If I have an extra HDD and would like to use it as a dual booting, would affect my main win 8.1.1 pro?

Thanks,

ered said:

What would be a good size of USB 3.0 ? 4GB, 8GB, 16GB? I would like to try the USB option first.
If I have an extra HDD and would like to use it as a dual booting, would affect my main win 8.1.1 pro?

Thanks,

An 8GB stick will be sufficient, I think it's pretty hard to find 4GB one's these days. Don't boot it through a USB 3.0 hub though, it probably won't work.
The dual boot idea should work fine for ya.

@Edwin,
Thanks, I will go shopping for a 16GB later, cause is only 2 dollars cheaper.
I will buy this one :: 16GB Silicon Power Blaze B20 USB 3.0

USB 3.0 interface
- Read speed up to 120MB/sec; write speed up to 50MB/sec (Transfer rates may vary depending on capacity and system platform)
- Fully compatible with USB 3.0, 2.0 and 1.1
- Color changes while operating temperature is higher than 31°C
- True plug and play, no external power required
- LED indicates the usage status
- SP Widget free download provided

128GB = Read 200 MBs/ Write 80 MBs
64GB = Read120 MBs/ Write 50 MBs
32GB = Read 90 MBs/ Write 40 MBs
16GB = Read 40 MBs/ Write 20 MBs
8GB = Read 40 MBs/ Write 10 MBs

Just to note since v.2 Rufus now has option to create a Windows To Go USB or a Standard Windows installation. You want the Standard Windows installation for this tutorial.

I'm a little confused by the following:

<<To boot from an external UEFI USB flash drive, be sure to temporarily disable Secure Boot and enable CSM in your UEFI firmware settings until the Windows installation is finished.>>

I can disable Secure Boot but can find no reference to "enable CSM" in my UEFI BIOS. Where do I find that?

HP laptop.

Dude said:

Wynona, your BIOS made show it as Legacy mode

The laptop I'm referring to is not Legacy, Dude. I have two Legacy BIOS and two newer UEFI machines.

The next one in line for dual boot is my newest laptop; hence my question about UEFI. I have disabled Secure Boot, but haven't found a reference to CSM in the settings.