A bootable Linux installation USB is connected to a physical machine with an existing OS on its internal disk.
Start the installer from the USB.
Which setting should be checked or changed first?
Select the installation medium in the UEFI or BIOS boot menu or boot order so the machine starts from it.
Detailed explanation
Correct. UEFI/BIOS controls the initial boot-device selection.
Correct. UEFI/BIOS controls the initial boot-device selection.
Incorrect. /etc/fstab controls filesystem mounts after the OS starts.
Incorrect. /etc/fstab controls filesystem mounts after the OS starts.
Incorrect. PATH controls command lookup inside a running shell.
Incorrect. PATH controls command lookup inside a running shell.
Incorrect. systemd orders services after the kernel and userspace start.
Incorrect. systemd orders services after the kernel and userspace start.
Try it yourself
An example you can run in a temporary verification environment.
test -d /sys/firmware/efi && echo UEFI || echo BIOS-or-unavailableExpected result
実行中システムがUEFI起動ならUEFI。設定変更は行わないKey points
- Firmware
- Boot order
- Installation media
Notes
- Environment: 一般的なx86_64 Linux
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.