Error in official info of UEFI Live version Debian 9 Stretch

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Error in official info of UEFI Live version Debian 9 Stretch

Postby 777 » 2018-02-01 11:52

I had to face several problems to create a dual boot system on my new 64-bit PC. Finally I solved and got what I wanted.

The oddity is that the most annoying problem I faced to solve has not been technical, but it is about the information provided by Debian.
If this error in the information were to be confirmed, for me it would be a strong disappointment because I have always considered the Debian world my reference point for Linux, and its collaborators are like oracles for me.

I lost a lot of time setting up the PC because I could not install Stretch, UEFI version, on my PC starting from the Live versions.

In the official information we read today:

-from Debian 9 "Stretch" released - June 17th, 2017 (
"The Debian live images now include support for UEFI booting as a new feature, too."
-from UEFI (
"UEFI support in live images
Since the first release of Stretch (9.0), UEFI is now supported on both installation and live images."

And the same content is reported in the corresponding national sites associated with

I tried different solutions but in the end I deduced that the live versions of Debian 9-Stretch currently downloadable from <> are NOT actually distributed in UEFI format.

In fact, not only my UEFI firmware does not recognize such iso as UEFI format, but if you look at the iso file of all live versions (Gnome, Cinnamon, Mate, LXDE) NONE of them have the EFI folder inside.
On the contrary, the "complete installation image" iso and netinst iso regularly have the EFI folder inside them.
In fact, with this last two is possible to install Stretch in UEFI format without problem.

Now I realize why so many people still encounter problems similar to what I've had.

Would not it be time to correct official information?
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Re: Error in official info of UEFI Live version Debian 9 Str

Postby Thorny » 2018-02-01 12:15

777 wrote:Would not it be time to correct official information?

Do you realise that we are not the developers of either the regular or the live versions. This is a user support forum. In the case of an issue like you have detailed, the appropriate action for you is to file a bug report against the live version installer.
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Re: Error in official info of UEFI Live version Debian 9 Str

Postby bw123 » 2018-02-01 12:21

I don't have the latest, but there is an EFI part on the one I have. Are you sure it wasn't an issue with the way you copied the .iso to the media? Maybe you can show us the info like below?

Code: Select all
# fdisk -l /dev/sdc
Disk /dev/sdc: 14.9 GiB, 16008609792 bytes, 31266816 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x4502db07

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sdc1  *           0  5049279  5049280  2.4G  0 Empty
/dev/sdc2           2136     2967      832  416K ef EFI (FAT-12/16/32)
/dev/sdc3        5050368 21827583 16777216    8G 83 Linux
/dev/sdc4       21827584 31266815  9439232  4.5G  c W95 FAT32 (LBA)
# mount /dev/sdc1 /mnt
mount: /dev/sdc1 is write-protected, mounting read-only
# cat /mnt/.disk/info
Official Debian GNU/Linux Live 9.0.1 kde 2017-06-20T01:10

NONE of them have the EFI folder inside

okay, maybe i don;t understand, you need an EFI FOLDER? Not a partition?
Last edited by bw123 on 2018-02-01 12:31, edited 1 time in total.
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Re: Error in official info of UEFI Live version Debian 9 Str

Postby Wheelerof4te » 2018-02-01 12:25

Funny, because I've just installed GNOME version of Stable from the live image a couple of days ago. It is a GUID, UEFI system.
I did have few problems with network interfaces created elsewhere and sources.list duplicate.
How did you create a bootable medium?
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