2. Then I copied from the Porteus-OPENBOX-v5.0rc1-x86_64.iso:root@porteus:~# gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.3
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): p
Disk /dev/sdc: 30720000 sectors, 14.6 GiB
Model: DataTraveler 3.0
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): CDBDEECB-74E2-4107-88E1-6288921A54D4
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 30719966
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)
Number Start (sector) End (sector) Size Code Name
1 2048 206847 100.0 MiB EF00 EFI System
2 206848 14886911 7.0 GiB 0700 Microsoft basic data
3 14886912 30719966 7.5 GiB 8300 Linux filesystem
root@porteus:~# blkid
/dev/sdc1: SEC_TYPE="msdos" UUID="E8F5-3808" TYPE="vfat" PARTLABEL="EFI System" PARTUUID="a9368683-6b0f-4079-9276-e8b445bf47c3"
/dev/sdc2: LABEL="Work7G" UUID="577696D3778F1D2F" TYPE="ntfs" PTTYPE="dos" PARTLABEL="Microsoft basic data" PARTUUID="dcde9a51-abf6-4930-9127-060661bd010a"
/dev/sdc3: LABEL="Porteus5" UUID="30640965-6eb4-4f8b-8e5a-b1dca12f6ed9" TYPE="ext4" PARTLABEL="Linux filesystem" PARTUUID="fcd6095c-9f13-4d5f-8582-896e0151990f"
boot and EFI folders to \mnt\sdc1
porteus folder to \mnt\sdc3
3. Added the from= cheatcode to this line in the /mnt/sdc1/boot/syslinux/porteus.cfg:
Code: Select all
APPEND changes=/porteus from=UUID:30640965-6eb4-4f8b-8e5a-b1dca12f6ed9
Unplugged my legacy USB, rebooted, and alas, the new USB is not listed in the UEFI boot submenu. I use my normal porteus USB as a legacy BOOT USB. Windows UEFI is an option, but not my new USB. See my BIOS snapshots
at https://imgur.com/a/ZdArf8H which were made when I already disabled legacy USB boot. (Trying to use the UEFI USB as a legacy one didn't work of course, said no bootable OS found or something.)
In the 1st photo, the Boot Sequence (same list I see on the black POST screen when I press F12) are what my system recognizes as UEFI canditates: host Windows, a couple of NIC, and then I really hoped to see my new USB. Any comments please?
UPDATE: plugged it into another UEFI computer -- not recognised, not in the list of bootable devices