--- layout: post status: publish published: true title: update-grub/os-prober not detecting Windows 7 wordpress_id: 3125 wordpress_url: https://www.martineve.com/?p=3125 date: !binary |- MjAxNC0wNi0wMiAxMzozNzoyMyArMDIwMA== date_gmt: !binary |- MjAxNC0wNi0wMiAxMjozNzoyMyArMDIwMA== categories: - Technology - Linux tags: - Linux comments: [] ---

Note to self/anybody else it might help: if you have disks with previous dmraid headers (potentially corrupt etc.), you need to remove the dmraid package before grub can find a Windows partition that resides on those disks. This is because the dmraid package is attempting to map the drives to /dev/mapper locations.