On 2020-03-18 09:06, Alan Tu wrote:
Hello, I have a weird problem. I successfully use one bootable USB to install Debian/Grub2/EFI to a second, blank USB. After installation, the USB boots to Debian in multiple reboot and full shutdown cycles. Then, I boot into Windows once without the USB target inserted, shut down, and the target USB no longer boots.
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After install, I can boot and reboot from the target USB multiple times, and I have a wonderful Linux system to work and play with.
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If I remove the target USB, boot into Windows from a cold boot, then immediately shut down, then re-insert the target USB, Linux no longer boots. I still boot into Windows. There are no beeps with the target USB inserted.
You need to use "--removable" in the grub-install command to set it in a removable device. Redo the grub-install command with that "--removable". And also to disable windows hiberfile (in windows) and fastboot (in bios) when dual-booting with windows.
