Anyone running a dual-boot setup may find the following article of interest.
www.omgubuntu.co.uk
My personal preference is to avoid dual boot and opt for using the computers own boot menu as a more reliable method of switching between OS where practical to do so, By installing each OS on its own individual hard-drive in turn, while any other drive(s) is disconnected, then connecting all hard-drives and setting their priority of boot within the BIOS removes the need for the boot-loader and another component renowned for crashing dual-boot systems. This way the priority OS will be booted until you hit the Boot Menu key during boot-up to select an alternative, and the likes of Windows, Linux or any other OS are kept well separated. Individual drives can still be partitioned and the partitions formatted in a format acceptable to all OS i.e. exFAT to enable data sharing etc. Peter

August Windows Update Breaks Linux Dual-Boots - OMG! Ubuntu
I haven't booted into the Windows partition on my Chuwi laptop for a while, but hearing that a recent Windows update leaves dual boot users unable to boot

My personal preference is to avoid dual boot and opt for using the computers own boot menu as a more reliable method of switching between OS where practical to do so, By installing each OS on its own individual hard-drive in turn, while any other drive(s) is disconnected, then connecting all hard-drives and setting their priority of boot within the BIOS removes the need for the boot-loader and another component renowned for crashing dual-boot systems. This way the priority OS will be booted until you hit the Boot Menu key during boot-up to select an alternative, and the likes of Windows, Linux or any other OS are kept well separated. Individual drives can still be partitioned and the partitions formatted in a format acceptable to all OS i.e. exFAT to enable data sharing etc. Peter