Dual Boot Install failure

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Dual Boot Install failure

Post by dutchenery » Mon Nov 06, 2017 4:24 am

Hi, I tried to install Mint 18.2 on a Windows 10 laptop. Having looked at all the hundreds of advice and made the usb’s (1- Linux, and 1 recovery for windows) I installed from the linux usb. The installation hung on the grub2 install. Having considered all the problems I now want to run Mint on a virtual set-up (VMBox). Therefore I want to delete the partitions made for Mint but at this stage am unsure if that would brick the Windows set-up. The initial set-up for Linux included partitions for boot, (20Gb), Swap and Home. I am not sure whether Mint altered the Windows boot process as grub2 did not load but it might have altered a thing or two. But this is beyond my expertise.
Windows at this stage just boots normally. So, to recap is it OK to delete the partitions and absorb the unallocated space back into Windows and then install VMBox? Or if all fails would it be possible using Gparted to delete all partitions and just load Linux from the usb?

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michael louwe
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Re: Dual Boot Install failure

Post by michael louwe » Mon Nov 06, 2017 5:21 am

dutchenery wrote: So, to recap is it OK to delete the partitions and absorb the unallocated space back into Windows and then install VMBox?
Yes, it's OK.

At the most, the LM Installer would have added its Grub bootloader to the Boot Partition, eg the Windows EFI System Partition or Windows MBR Partition. Deletion of the Linux partitions will deactivate the Grub bootloader = the computer will automatically boot Win 10 because the Windows Boot Manager is still present in the Boot Partition. You can use the Windows bcedit commands to clean up the Boot Partition in order to free up space, eg for future multi-booting.
For some guidance on dual-booting LM alongside UEFI Win 10/8.1, please refer to .......
viewtopic.php?f=42&t=163126 (dual-booting UEFI computers)
https://sites.google.com/site/easylinux ... ct/windows
https://sites.google.com/site/easylinux ... nt-install
https://www.tecmint.com/install-linux-m ... uefi-mode/ (note step 18)
viewtopic.php?f=42&t=122276 (manual partitioning Tutorial)

Ensure that Secure Boot, Fast Boot and CSM are disabled in BIOS setup, Fast Startup is disabled in Win 10/8.1(>Control Panel >Power options), the Live LM media(DVD or USB-stick) is booted in UEFI mode in BIOS setup.

To dual-boot, you only need to pre-shrink the Windows partition if you intend to use the manual "Something else" install method. The automatic "install LM alongside Windows Boot Manager" method will be followed by the LM Installer auto-partitioning the disk and auto-installing the Linux Grub bootloader onto the Windows ESP. Only a root / and swap partition will be auto-created with a total default size of about 20GB. The user will be given the option to increase this default size by moving a slider on the colored Partition table, subject to the maximum available free space in the Windows partition.

For the "Something else" install method, ensure that the "Device for boot loader installation" is the Windows EFI System Partition(= ESP = fat32/about 104MB) which is usually dev/sda1, or if unsuccessful select the whole disk, ie /sda.

P S - Certain high-end OEM Win 8.x/10 computers, eg Acer, Asus and HP, have an obstructive or pro-M$ BIOS setting for "select an UEFI file as trusted for executing", .......
... The above latest(= 2017) OEM laptops may have even removed this BIOS setting(= cannot even boot a Live Linux USB/DVD), but may be restored by a new BIOS firmware update from the OEMs.

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