How to boot Porteus from UEFI computer?

[benjibasson]

Hi, I would like to boot Porteus usb drive from any uefi computer
So I extract iso to the usb drive sdb2 in fat32 -> fine
I checked it copied the EFI boot and porteus into it: fine
I ran /boot/Porteus-installer-for-linux fine.
I reboot from the linux computer with legacy bios ( 2007 laptop) fine

Reboot and choose the new stick from the Microsoft Surface pro 4: it fail and boot to the windows 10 instead of booting to Porteus menu even if I disable secure boot.

Same problem with asus tablet with windows 8 pro.

If I try unetbootin Ubuntu 22.04 from Surface pro 4 I got the Ubuntu menu and it boot fine.

What Am I suppose to to to boot Porteus to UEFI computer and Microsoft tablets?


Cheers

[Ed_P]

When booting can you press F8 or some other key to give you a boot menu?

[nanZor]

Are you sure that you are running /boot/Porteus-installer-for-linux *from the physical target drive*, and not from inside the extracted iso itself?

Just a guess since I've become impatient and done that before.

[ncmprhnsbl]

note: Porteus-installer-for-linux.com does nothing in the case of UEFI booting, it's only for legacy bios/MBR. (running it won't cause any problem though)
what is on the first partition of the usb stick, ie. sdb1?

and choose the new stick

are you choosing the correct partition? generally the device chooser identifies and mentions UEFI in it's entries.
it may also help to set the 'boot' and 'esp' flags on sdb2 (see 'manage flags' part of gparted)

[Ed_P]

Some notes from a script I use to create bootable USB drives:

Code: Select all

## Run GParted to partition & format the USB drive with a msdos Partition table.  ##
##  Use GParted's View > Device Information to check Partition Table type.        ##
##  Use GParted's Device > Create Partition Table if Partition Table shows as GPT.##
## Or under Windows use:                                                          ##
## > diskpart          * Run Command Prompt with Admin Rights.                    ##
## > list disk                                                                    ##
## >....                                                                          ##
## > select disk 1     * Note: disk nbr is the nbr of the USB disk                ##
## > clean                                                                        ##
## > create partition primary                                                     ##
## > exit                                                                         ##

[Mel1974]

Hi, I would like to boot Porteus usb drive from any uefi computer
So I extract iso to the usb drive sdb2 in fat32 -> fine
I checked it copied the EFI boot and porteus into it: fine
I ran /boot/Porteus-installer-for-linux fine.
I reboot from the linux computer with legacy bios ( 2007 laptop) fine

Reboot and choose the new stick from the Microsoft Surface pro 4: it fail and boot to the windows 10 instead of booting to Porteus menu even if I disable secure boot.

Same problem with asus tablet with windows 8 pro.

If I try unetbootin Ubuntu 22.04 from Surface pro 4 I got the Ubuntu menu and it boot fine.

What Am I suppose to to to boot Porteus to UEFI computer and Microsoft tablets?


Cheers

Try adding the EFI/BOOT/bootx64.efi file to the root of your USB drive and rename it to EFI/BOOT/boot.efi. This should allow UEFI systems to boot from the USB drive.

Also, make sure the USB drive is formatted as FAT32 and the boot flag is set.