Hi,
Gianmarco wrote:
I have tried with: 10.3, 11.1, 11.2 and 11.3.
[...]
my results (with DVD-1 debian version 11.2):
1903144+0 record in
1903144+0 record out
3897638912 byte (3,9 GB) copied, 260,578 s, 15,0 MB/s d1fc0ddc81d980b9eddc9d110344bcf17a6cbd5750e147112ccc23bef4d61a8a -
The DVD is readable at least as far it is needed for the BIOS to find
the EL Torito boot record, the catalog, and the boot images.
But the SHA256 does not match the one of
https://cdimage.debian.org/mirror/cdimage/archive/11.2.0/amd64/iso-dvd/debian-11.2.0-amd64-DVD-1.iso
Checking the DVD-1 of 10.3, 11.1, 11.3 would need other count= arguments
for dd. They would have to be derived from their image sizes or from
inspecting the DVDs.
See below.
I just wanted to tell you that with a 2021-machine, of a friend of mine,
we tried to download the ISO file (DVD-1) from this 2021-machine, always
burn it in his 2021-machine (windows-OS) and we always tried to launch the installation from the same machine. the result was for me unexpectedly the same as all the other tests I performed.
I still believe that the DVDs are somehow bad.
Please inspect those which you still have by:
xorriso -indev /dev/sr0 -toc -report_el_torito plain
and report the resulting information lines.
With the DVD+RW to which i burnt debian-11.2.0-amd64-DVD-1.iso i get:
xorriso : NOTE : Loading ISO image tree from LBA 0
xorriso : UPDATE : 80 nodes read in 1 seconds
...
xorriso : UPDATE : 9791 nodes read in 8 seconds
xorriso : NOTE : Detected El-Torito boot information which currently is set to be discarded
Drive current: -indev '/dev/sr0'
Media current: DVD+RW
Media status : is written , is appendable
Boot record : El Torito , MBR isohybrid cyl-align-on GPT APM
Media summary: 1 session, 1903144 data blocks, 3717m data, 766m free
Volume id : 'Debian 11.2.0 amd64 1'
Drive current: -indev '/dev/sr0'
Drive access : exclusive:unrestricted
Drive type : vendor 'HL-DT-ST' product 'BDDVDRW GGC-H20L' revision '1.03'
Drive id : '... nobody needs to know ...'
Media current: DVD+RW
Media product: MBIPG101/W04/48 , Moser Baer India Limited
Media status : is written , is appendable
Media blocks : 1903168 readable , 391936 writable , 2295104 overall
Boot record : El Torito , MBR isohybrid cyl-align-on GPT APM
Boot catalog : '/isolinux/boot.cat'
Boot image : '/isolinux/isolinux.bin' , boot_info_table=on
Boot image : '/boot/grub/efi.img' , platform_id=0xEF
ISO offers : Rock_Ridge Joliet
ISO loaded : Rock_Ridge
TOC layout : Idx , sbsector , Size , Volume Id
ISO session : 1 , 0 , 1903144s , Debian 11.2.0 amd64 1
Media summary: 1 session, 1903144 data blocks, 3717m data, 766m free
Media nwa : 1903168s
El Torito catalog : 5946 1
El Torito cat path : /isolinux/boot.cat
El Torito images : N Pltf B Emul Ld_seg Hdpt Ldsiz LBA
El Torito boot img : 1 BIOS y none 0x0000 0x00 4 7243
El Torito boot img : 2 UEFI y none 0x0000 0x00 5184 5947
El Torito img path : 1 /isolinux/isolinux.bin
El Torito img opts : 1 boot-info-table isohybrid-suitable
El Torito img path : 2 /boot/grub/efi.img
The size to be used with dd's count= is given in the lines
TOC layout : Idx , sbsector , Size , Volume Id
ISO session : 1 , 0 , 1903144s , Debian 11.2.0 amd64 1
Media summary: 1 session, 1903144 data blocks, 3717m data, 766m free
Other ISOs will show different numbers than 1903144.
Older xorriso versions might omit some of the shown lines. But the
assessment of node numbers (files and directories), of ISO session size,
of volume id, and of El Torito boot images is supposed to be the same as
in my above example.
You will probably get other info in these lines:
Media current: DVD+RW
Media product: MBIPG101/W04/48 , Moser Baer India Limited
It will be interesting to see what DVD type from which manufacturer you
used.
-----------------------------------------------------------------------
Sorry for my lack of more particular ideas about what goes wrong.
The fact that the other subscribers to this mailing list are not offering
own ideas might mean that they currently have none.
To the bystanders:
A test with an old BIOS machine and a Debian 11.3 DVD-1 would nevertheless
be helpful. I can currently only test the EFI boot path.
-----------------------------------------------------------------------
To get you going with Debian 11:
Would a USB stick of at least 4 GB capacity be available for being completely overwritten ?
If so, i propose (with the usual warnings not to overwrite your hard disk
if it happens to be /dev/sdc):
# Make a backup of the complete USB stick which i assume to be /dev/sdc
usb_stick_dev=/dev/sdc
usb_stick_backup="$HOME"/usb_stick_backup.gz
dd if="$usb_stick_dev" bs=1M | gzip > "$usb_stick_backup"
# Copy ISO image to the stick (i assume 11.3 here, because it is the
# version that is currently advised for Debian installations)
dd if=debian-11.3.0-amd64-DVD-1.iso of="$usb_stick_dev" bs=1M ; sync
The last step is the risky one.
Check twice whether /dev/sdc is correct or use a safer method like the
one described in
https://wiki.debian.org/XorrisoDdTarget#Identify_the_device_by_plugging_and_copy_if_it_looks_safe_enough
Try to convince your machines' firmwares to boot from that USB stick.
The ISOs contain a bootable MBR for BIOS and an EFI system partiton.
So they should boot from the USB stick and lead to the same installer
software as does the DVD.
If you later want to get back your USB stick's old content and partitioning, perform this (again risky) dd run:
# Restore backup
usb_stick_dev=/dev/sdc
usb_stick_backup="$HOME"/usb_stick_backup.gz
gunzip < "$usb_stick_backup" | dd of="$usb_stick_dev" bs=1M
Have a nice day :)
Thomas
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