Invalid System Disk error when trying to boot Windows 10 from bootable USB Drive.

KillerGamer

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Dec 4, 2013
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I made an 8GB pen drive a bootable one using Rufus to install Win 10 x64 on my computer after I had to send my HDD for RMA.

I tried to format the bootable drive as both, MBR and GPT, but neither one of them worked. The type is FAT32 as I couldn't format the pen drive to NTFS. I tried it multiple times, but no luck.

Here's what I have already tried:

1. Changed the boot order to give priority to USB bootable drive.
2. Tried GPT and MBR.
3. Formatted the pen drive multiple times to FAT32.
4. Checked whether the pen drive and the HDD are being recognized (which they are).

The only thing I can think of is that the pen drive isn't working properly, but I highly doubt that because it has served me well so far and I have had 0 problems.

I would really appreciate it if someone could point out where I'm going wrong. Thanks!