Apologies for duplicating a question that is currently live but I'm desperate for the answer and as I'm new to AskUbuntu i don't yet have the reputation to add comments to the original question.
I am also trying to dual boot Ubuntu 16.04.01 onto a recently purchased Dell XPS 8910 tower but receive a fatal fail message when the installer reaches the grub install phase.
The computer is pre-installed with Windows 10 (UEFI) which is mounted on a 2 TB HDD with a RAID 0 link to a 32 GB SSD.
After many failed attempts to complete this task I have now disassociated the RAID disk from the master in Windows, thinking this might be the cause of the problem, converted SATA mode to AHCI and disabled the FastStartup function but still it fails on the boot grub install. I've also tried with SecureBoot disabled without any luck.
I'm using a live UEFI version of Ubuntu to perform the install (running off a USB) and have attempted using the INSTALL ALONGSIDE and SOMETHING ELSE options. Ive tried specifying many different locations for the boot loader installation but on the most recent attempt tried /dev/sdb since the Windows EFI partition is here.
The partitions on the two drives following a failed attempt are as below:
Disk /dev/sda: 29.8 GiB, 32017047552 bytes, 62533296 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: 892A53A1-3FCB-434D-9BFA-54B31909C Device Start End Sectors Size Type /dev/sda1 34 262177 262144 128M Microsoft reserved Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: 42310B56-93E8-4769-A69B-F800C3921 Device Start End Sectors Size Type /dev/sdb1 2048 1026047 1024000 500M EFI System /dev/sdb2 1026048 1288191 262144 128M Microsoft reserved /dev/sdb3 1288192 1959598079 1958309888 933.8G Microsoft basic data /dev/sdb4 3878731776 3879653375 921600 450M Windows recovery environment /dev/sdb5 3879653376 3907020799 27367424 13.1G Windows recovery environment /dev/sdb6 1959598080 1969362943 9764864 4.7G Linux swap /dev/sdb7 1969362944 1979127807 9764864 4.7G Linux filesystem /dev/sdb8 1979127808 3878731775 1899603968 905.8G Linux filesystem
Any help would be much appreciated as after 4 days of trying I think I've exhausted guidance from previous posts.