Re: USB media install has wrong partition

2018-09-16 Thread Thomas Schmitt
Hi, mick crane lured me into writing: > > No loopback is needed. David wrote: > It is a "loop" device. Indeed. Probably i would also have adopted "loo-thingy" while my head was wrapped around the partition table stuff. Have a nice day :) Thomas

Re: USB media install has wrong partition

2018-09-16 Thread David
Sorry, in my previous message I forgot this footnote :) [1] https://en.wikipedia.org/wiki/Loop_device

Re: USB media install has wrong partition

2018-09-16 Thread David
On 16 September 2018 at 17:38, Thomas Schmitt wrote: > i wrote: >> > You could even use program fdisk to delete partition entry 2 in the ISO > > mick crane wrote: >> never really understanding this. >> If mount iso as loopback does it show up in fdisk ? > > No loopback is needed. fdisk will operat

Re: USB media install has wrong partition

2018-09-16 Thread mick crane
On 2018-09-16 08:38, Thomas Schmitt wrote: Hi, i wrote: > You could even use program fdisk to delete partition entry 2 in the ISO mick crane wrote: never really understanding this. If mount iso as loopback does it show up in fdisk ? No loopback is needed. fdisk will operate directly on the

Re: USB media install has wrong partition

2018-09-16 Thread Thomas Schmitt
Hi, i wrote: > > You could even use program fdisk to delete partition entry 2 in the ISO mick crane wrote: > never really understanding this. > If mount iso as loopback does it show up in fdisk ? No loopback is needed. fdisk will operate directly on the ISO image file as it would operate on the

Re: USB media install has wrong partition

2018-09-16 Thread mick crane
On 2018-09-15 19:33, Thomas Schmitt wrote: 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.

Re: USB media install has wrong partition

2018-09-15 Thread Thomas Schmitt
Hi, John Roman wrote: > > netinst and live both create a dos partition table on dd, and cp. Pascal Hambourg wrote: > "On dd, and cp" ? Steve McIntyre and i understood John's statement that after dd or cp there is a MBR partition table on the USB stick. The following conversation would make few s

Re: USB media install has wrong partition

2018-09-15 Thread Wayne Sallee
On 09/15/2018 02:16 PM, Pascal Hambourg wrote: Others already addressed this point. Besides, what's wrong with booting in legacy mode ? You have to keep changing the bios settings whenever you boot the memory stick on an EFI computer. Wayne Sallee wa...@waynesallee.com http://www.WayneSallee

Re: USB media install has wrong partition

2018-09-15 Thread Thomas Schmitt
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 re

Re: USB media install has wrong partition

2018-09-15 Thread Pascal Hambourg
Le 15/09/2018 à 03:55, John Roman a écrit : the USB install media for netinst and live both create a dos partition table on dd, and cp. "On dd, and cp" ? By default, the Debian installer creates a DOS partition table when booted in BIOS/legacy mode and a GPT partition table when booted in EF

Re: USB media install has wrong partition

2018-09-15 Thread John Roman
Thomas, Thank you for clarification on the layout, as it is in fact most helpful in understanding GPT cruft. As a Gentoo user, I can in fact boot system-rescue-cd and Knoppix as EFI USB. Sadly, this seems like one more nail in the coffin of reasons I need to upgrade my PC. I cannot reproduce the

Re: USB media install has wrong partition

2018-09-15 Thread Thomas Schmitt
Hi, John Roman wrote: > As I understand, a Protective MBR may be located at LBA 0 In the case of the isohybrid partition layout of Matthew J. Garrett, which is used by Debian for i386 and amd64, the MBR is not protective. A bit confusing can be the GPT partition table debris that follows the MB

Re: USB media install has wrong partition

2018-09-15 Thread John Roman
As an update, Ive tested devuan, debian, and ubuntu media on a newer laptop (2015) which seems to recognize the EFI partition and boot normally. my desktop (2012) does not seem to understand 0xEF...I wish I knew why. On Sat, Sep 15, 2018 at 03:39:35AM +0100, Steve McIntyre wrote: > j...@dev1ce.c

Re: USB media install has wrong partition

2018-09-15 Thread John Roman
Correct sir, I am having issues installing to an asus sabertooth 990 motherboard. namely, the boot override menu fails to recognize the EFI media as a proper EFI bootable target. As I understand, a Protective MBR may be located at LBA 0 (i.e., the first logical block) of the disk if it is using t

Re: USB media install has wrong partition

2018-09-14 Thread Steve McIntyre
j...@dev1ce.com wrote: >greetings, >the USB install media for netinst and live both create a dos partition >table on dd, and cp. This will result in media that can only be booted >legacy, as GPT is a requirement for EFI boot. Sorry, that's incorrect. It's perfectly valid in the UEFI spec for an E

USB media install has wrong partition

2018-09-14 Thread John Roman
greetings, the USB install media for netinst and live both create a dos partition table on dd, and cp. This will result in media that can only be booted legacy, as GPT is a requirement for EFI boot.