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HOW TO DUAL BOOT YOUR ACER S3 ON DIFFERENT DISKS: Windows 10 (HDD, 1TB) + HIGH SIERRA (mSATA SSD, 128 GB)
I have a 240 GB SSD with High Sierra, and an internal 1 TB HDD as data disk.
I have made a backup of my HDD, so I have installed Windows 10 again (it asked me to format the disk again) into it. I want my MacOS to be fast, I don't need my Windows running so fast, so I want them to be in different disks. Besides, I don't have enough room for both into the mSATA 128GB SSD Sandisk.
Once I have installed, and booted from my new Windows 10, this is what I've done:
1- From Windows, create a Live Linux USB: in my case, I created a 16.04 Ubuntu one from an ISO, using Lili (a Windows app).
2- Boot from it (you can go into the BIOS pressing F2 and set the order to boot from your USB stick). Ubuntu 16.04 has efi boot option, if you have disabled secure boot, of course (to disable secure boot, you must first set a supervisor password). You need to boot in EFI mode, not in MBR old mode. So, be sure you have set UEFI Boot Mode, Disabled Secure Boot, and your USB stick is the 1st in your boot priority order list.
3- Once there, from Ubuntu, open a Terminal and type:
a) sudo fdisk -l to see where the efi partition is. In my case, it's /dev/sdb1
b) sudo modprobe efivars to enable the module efivars.
c) sudo efibootmgr -v to see what you have in the efiboot. You'll see your Ubuntu USB and your Windows Boot Manager.
d) sudo efibootmgr -c -d /dev/sdb -p 1 -L "Clover" -l "\efi\boot\bootx64.efi" to add Clover as an option to be able to boot from it. Look at /dev/sdb and -p 1, if you don't have your efi partition in /dev/sdb1, you must change that accordingly.
e) sudo efibootmgr -v to see what you have in the efiboot in this very moment. Look at the order of the boot entries.
f) If Clover is not the first one, let's move our entry as the first one to boot: efibootmgr -000X (000X are the 4-digits of your Clover entry, in my case it was 0003).
g) Now reboot and Clover will boot. If this doesn't happen, remember, you can boot pressing F12 and you'll see the UEFI Boot Manager of your Acer S3: select Clover and that's all. Note: I'm supposing in your BIOS you have the option "F12 Boot Menu" under "Main" section defined as Enabled.
That's all
I have a 240 GB SSD with High Sierra, and an internal 1 TB HDD as data disk.
I have made a backup of my HDD, so I have installed Windows 10 again (it asked me to format the disk again) into it. I want my MacOS to be fast, I don't need my Windows running so fast, so I want them to be in different disks. Besides, I don't have enough room for both into the mSATA 128GB SSD Sandisk.
Once I have installed, and booted from my new Windows 10, this is what I've done:
1- From Windows, create a Live Linux USB: in my case, I created a 16.04 Ubuntu one from an ISO, using Lili (a Windows app).
2- Boot from it (you can go into the BIOS pressing F2 and set the order to boot from your USB stick). Ubuntu 16.04 has efi boot option, if you have disabled secure boot, of course (to disable secure boot, you must first set a supervisor password). You need to boot in EFI mode, not in MBR old mode. So, be sure you have set UEFI Boot Mode, Disabled Secure Boot, and your USB stick is the 1st in your boot priority order list.
3- Once there, from Ubuntu, open a Terminal and type:
a) sudo fdisk -l to see where the efi partition is. In my case, it's /dev/sdb1
b) sudo modprobe efivars to enable the module efivars.
c) sudo efibootmgr -v to see what you have in the efiboot. You'll see your Ubuntu USB and your Windows Boot Manager.
d) sudo efibootmgr -c -d /dev/sdb -p 1 -L "Clover" -l "\efi\boot\bootx64.efi" to add Clover as an option to be able to boot from it. Look at /dev/sdb and -p 1, if you don't have your efi partition in /dev/sdb1, you must change that accordingly.
e) sudo efibootmgr -v to see what you have in the efiboot in this very moment. Look at the order of the boot entries.
f) If Clover is not the first one, let's move our entry as the first one to boot: efibootmgr -000X (000X are the 4-digits of your Clover entry, in my case it was 0003).
g) Now reboot and Clover will boot. If this doesn't happen, remember, you can boot pressing F12 and you'll see the UEFI Boot Manager of your Acer S3: select Clover and that's all. Note: I'm supposing in your BIOS you have the option "F12 Boot Menu" under "Main" section defined as Enabled.
That's all
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