Windows 10 does not boot successfully without USB flash drive.

Question

Hello, I did an oopsie by deleting my Ubuntu partition, containing the GRUB menu. I was unable to boot my PC into windows or even get the GRUB menu working (of course, since I deleted it on accident Face palming). I went to my nearest store, got a 16gb sandisk USB Flash Drive, loaded Windows 10 recovery onto it using another PC, and "repaired" the boot process in the Administrator CMD on the recovery drive. I rebooted my PC with the USB Flash Drive in it, and it successfully booted into my main Windows 10 copy (Windows 10 Pro btw). I wondered what would happen if I tried booting my PC withOUT my USB Flash Drive (I of course fully shutdown the PC and waited a bit). It failed and a blue screen came up with a message saying my system needed to be repaired. I turned it off completely, plugged the drive back in, and the boot worked again. I need this USB Flash Drive for other things and now I have to always have the drive in the USB port on my PC forever basically until I can somehow manage to move the boot files to my main drive or something. Any help please?

Answer 1

Hi Voltaicmimic

I am Dave, an Independent Advisor, I will help you with this . . .

Is your system installed in UEFI or legacy BIOS Mode?

If that is UEFI, you can use the steps provided by Kyhi on this thread to recreate the EFI (Boot) partition on your drive, I hope that works for you . . .

https://www.tenforums.com/installation-upgrade/...

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Answer 2

Nevermind, Ubuntu doesn't even wanna boot. It ends up saying that my system is corrupted or something like that. So I returned back to Windows 10. Please, I need some help.

Answer 3

I do have an idea though... to use Unetbootin to dual boot Ubuntu again and so it can create the Grub menu again. Hope it works. I really do regret removing the partition lol.