Ubuntu issues during RST mode boot plus installation failure due to unrecognized SATA drives.
Ubuntu issues during RST mode boot plus installation failure due to unrecognized SATA drives.
As part of the expansion strategy, the system I assembled a year ago is getting more advanced, featuring a separate Ubuntu partition while keeping Windows 7 as my main OS, enabling dual-boot functionality. The setup encounters challenges during installation: RST mode makes all SATA devices reachable unless I switch to AHCI settings on the motherboard, which forces me to use AHCI to designate one HDD and create mini swap partitions. In RST Mode, Ubuntu does not boot, while Windows remains active. Switching to AHCI reverses the boot output. Despite my attempts with 'apt-get install' using elevated privileges, Ubuntu still cannot locate or install Boot-Repair. With work hours away and a need for rest, I seek guidance on troubleshooting. I’ll provide updates tomorrow but will note other points: Windows 7 was installed first and has been running for nearly a year, handling critical data that complicates any OS reinstall. The build specifications in the signature are outdated due to added drives, cards, and an NVMe SSD, though updates won’t occur until completion. Ubuntu is currently on a 500GB HGST drive (previously a laptop system drive), while a new 1TB HDD is unformatted and reserved for a virtual machine running Windows 7. The Win 7 partition uses a 500GB NVMe, 500GB SSD, and a 3TB HDD in RST RAID1. All power and data cables are connected; no changes will be made to the wiring unless it disrupts the existing setup. Edit 1 Addendum: During installation, Ubuntu’s live USB failed to detect any SATA or NVMe drives, only recognizing flash sticks and external HDDs—this issue appears exclusive to RST mode, not AHCI. I’m open to reinstalling Ubuntu if it becomes clearly detectable. Edited December 7, 2017 – Aereto_Compuru Review & further details shared.
It seems Windows isn't compatible with AHCI mode, but a registry fix might resolve the issue.
I examined the situation, but before making any adjustments, this doesn't tackle the main concern. Rather, it forces RST-installed Windows 7 to start in AHCI mode instead of what Ubuntu aims for with RST mode. The board supports Intel RST Premium and AHCI, but using Intel RST is essential for configuring and handling the RAID 1 setup on the 3TB drives. This could cause trouble and frustration for everyone involved. I won't take that path just yet, as it doesn't directly address the issue I'm discussing.
Checked the Linux Mint forums for guidance. The steps should work similarly on Ubuntu. https://forums.linuxmint.com/viewtopic.php?t=129866 TL;DR: On Linux, run these commands: sudo apt-get update sudo apt-get install mdadm sudo mdadm --assemble --scan
This approach helped significantly when paired with further actions like reformatting the USB flash drive with the latest Ubuntu ISO using Rufus. I cleared any prior Ubuntu UEFI boot settings before reinstalling via efibootmgr. I successfully wiped the disk with the failed Ubuntu partition and created a new GPT. Under these conditions, I managed to install and boot Ubuntu while operating in RST RAID. It’s now working and I can access the system. The 1TB blank drive is recognized but remains unformatted and unmounted until I study KVM more thoroughly.