Re: USB media install has wrong partition

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

John Roman wrote:
> As a Gentoo user, 

In 2016 the Gentoo ISOs were BIOS-only.
I now downloaded install-amd64-minimal-20180913T214501Z.iso which looks
much like a Debian ISO, partition-wise.

  xorriso -indev install-amd64-minimal-20180913T214501Z.iso \
          -report_system_area plain

reports:

  MBR partition table:   N Status  Type        Start       Blocks
  MBR partition      :   1   0x80  0x00            0       477184
  MBR partition      :   2   0x00  0xef          160        12912
  MBR partition path :   2  /gentoo.efimg
  ...
  GPT                :   N  Info
  GPT disk GUID      :      8d5cbf80b3cc5142b9803969f661ef0c
  ...

The file /gentoo.efimg in the ISO serves as System Partition
The GPT stuff is invalid, as usual with this layout.


> Sadly, this seems like one
> more nail in the coffin of reasons I need to upgrade my PC.

Can't you talk its firmware into BIOS emulating legacy mode ?
You could even use program fdisk to delete partition entry 2 in the ISO
in order to take away the USB boot lure for EFI. Some firmwares are
said to fall back to BIOS emulation automatically.


Have a nice day :)

Thomas