You can't use SteamOS.zip on BIOS systems, only EFI. Use the SteamOSDVD.iso - you can image this onto your usb drive with "dd if=SteamOSDVD.iso of=/dev/sdX" where X is your USB drive's letter.
In more detail:
UEFI will boot from USB media which is MBR-partitioned and contains a single FAT12, FAT16 or FAT32 partition. It'll load the file named EFI\BOOT\BOOTx64.EFI from that drive.
BIOS cannot do this. BIOS can only boot from USB media which contains an MBR boot sector at the start of the drive (which can only be done by imaging, or using tools to create the boot sector like grub-install).
There are also similar differences between how BIOS and UEFI boot from CD/DVD - BIOS requires an MBR boot sector stored as an embedded floppy record on the DVD, and UEFI requires either that the DVD be UDF-formatted (ISO9660 is the norm) or that there be an embedded hard disk partition image with EFI\BOOT\BOOTx64.EFI in it.
Closing as this UEFI is currently the only officially supported mechanism.
Nothing extracted yet.
Hello world,
sorry for my bad english , i'm french ^^
I want install for booting on my USB key but , it's a fail.(i've a problème no disk for boot)
i dont know why he doesn't want start.
I had used xarchiver for decompress the archive . And after , it's a error then i had used the command line:
unzip steamOS.zip -d /media/my-user/path-usb/
And the boot had failed again. But i've a small issue , my Bios is not an UEFI.
Do you think this is my problem ?
Thank you :-)