Asus Z97-A motherboard, secure boot off.
Installing eOS on a dedicated SSD. Windows resides on another separate SSD. Other drives around which contain data.
First install would copy the files then stop at the dreaded "cannot install grub" error, neither on the eOS target drive, or on the Windows drive. I restarted, reformatted the destination drive, partitioned with a 50MB EFI partition and a 10MB Grub partition, / and swap. Install went fine, grub install raised no issues. Grub is now installed on the same drive as Elementary.
First reboot would go straight into eOS, no Grub menu. Tried with boot-repair USB drive, and it says
SFS detected. You may want to retry after converting Windows dynamic partitioning (SFS partitions) to a basic disk
Reboot again, F8 to bring the motherboard's boot menu up. Select Windows drive, log in, check if any of the drives is in Dynamic mode, none of them is.
Log out, back into Elementary, issue an update-grub, it seems ok.
Install TestDisk, check partitions, on the Windows drive the boot partition is marked as a regular NTFS, not a Dynamic Disk.
I'm baffled now. Should I try to reinstall grub on a separate drive?
I can post and fdisk -l one I get back home.
sudo update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-36-generic
Found initrd image: /boot/initrd.img-4.15.0-36-generic
error: invalid volume.
grub-probe: error: cannot find a GRUB drive for /dev/sda1. Check your device.map.
Adding boot menu entry for EFI firmware configuration
done
and
sudo sfdisk -l
Disk /dev/sda: 931,5 GiB, 1000204886016 bytes, 1953525168 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: dos
Disk identifier: 0xb501c40d
Device Boot Start End Sectors Size Id Type
/dev/sda1 63 1953523119 1953523057 931,5G 42 SFS
Disk /dev/sdb: 238,5 GiB, 256060514304 bytes, 500118192 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: dos
Disk identifier: 0x3c87fd1e
Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 1026047 1024000 500M 7 HPFS/NTFS/exFAT
/dev/sdb2 1026048 499135755 498109708 237,5G 7 HPFS/NTFS/exFAT
/dev/sdb3 499136512 500113407 976896 477M 27 Hidden NTFS WinRE
Disk /dev/sdc: 119,2 GiB, 128035676160 bytes, 250069680 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: 365DFA1E-9F1E-41B6-A495-C30B6F1CA4AB
Device Start End Sectors Size Type
/dev/sdc1 4040704 4139007 98304 48M EFI System
/dev/sdc2 20480 40959 20480 10M BIOS boot
/dev/sdc3 40960 4040703 3999744 1,9G Linux swap
/dev/sdc4 4139008 250068991 245929984 117,3G Linux filesystem
Partition table entries are not in disk order.
Disk /dev/sdd: 223,6 GiB, 240057409536 bytes, 468862128 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: C768B16A-F5D0-434E-9B17-86680256E78D
Device Start End Sectors Size Type
/dev/sdd1 2048 468860927 468858880 223,6G Microsoft basic data
