Hi, Am Samstag, 9. November 2019 schrieb Chris Ward: > I have a laptop computer with 2 disks; a regular internal disk and a USB > external disk. The internal disk is dual-boot between Windows 10 and > opensuse leap 15.1; I use the USB disk for Debian. > > This was fine with Debian 9, but when I installed Debian 10 on the USB > disk, the Debian installer put its 'grub' on the internal disk > (overwriting the opensuse grub). I was expecting Debian to put its > 'grub' on the external disk alongside the rest of the Debian > installation.
You will have to provide installer logs, to give the possibilty to debug the problem: /var/log/installer Holger -- Sent from my Jolla phone http://www.jolla.com/