On 5/27/23 07:42, mick.crane wrote:
On 2023-05-27 10:33, Michael wrote:
On Friday, 26 May 2023 11:47:04 CEST, Thomas Schmitt wrote:
(And as mick.crane already noticed, it is a bit awkward to create an
extended partiton 2 only to fill it nearly up with logical partition 5.
I wonder what entity decided to do so.)

on my debian 11 test vm with default installation it is exactly the same:

root@debian11test:~# fdisk -l /dev/sda
Disk /dev/sda: 20 GiB, 21474836480 bytes, 41943040 sectors
Disk model: VBOX HARDDISK   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: 0x2e739d33

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sda1  *        2048 39942143 39940096   19G 83 Linux
/dev/sda2       39944190 41940991  1996802  975M  5 Extended
/dev/sda5       39944192 41940991  1996800  975M 82 Linux swap / Solaris

greetings...

I just installed bookworm on another SSD disk.
The installer said it was going to partition the disk one for the / and another for swap
After the installation the extended partition was there.


That sounds like d-i did what you told it to do:

https://www.debian.org/releases/stable/amd64/ch06s03.en.html#di-partition

6.3.4.2. Guided Partitioning

All files in one partition


Is this some attribute of pre formatted SSDs


Unlikely.


I didn't zero the disk as my old systemrescueCD CD failed to successfully boot.
I'll get a more recent copy.
mick



d-i includes a rescue shell.  You can use dd(1) to zero disks.


David

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