Hi Heinrich, On Fri, 22 Sept 2023 at 19:38, Heinrich Schuchardt <[email protected]> wrote: > > On 9/23/23 00:13, Simon Glass wrote: > > Hi Heinrich & Bin, > > > > I'd like to be able to figure out in U-Boot what OS is on a USB stick. > > For example, with the Ubuntu installer, I can boot it (through grub), > > but I cannot see how to read anything useful from the USB stick that > > would indicate that it is Ubuntu, what version it is, etc. > > > > Does U-Boot need an ISO9660-filesystem driver for that? Is there any other > > way? > > > > With Debian I can see the actual files (linux and initrd) , so it is a > > bit easier. > > > > Regards, > > SImon > > U-Boot only needs to support reading the ESP to boot. GRUB comes with a > 9660 driver.
Yes, but this is not about booting, it is about visibility into what is being booted. Perhaps Ubuntu could put some information in partition 2? > > On Ubuntu server installer images linux and initrd are in directory > casper/ in the ISO9660 file-system. > > There is also a file dists/mantic/Release > > $ cat dists/mantic/Release > Origin: Ubuntu > Label: Ubuntu > Suite: mantic > Version: 23.10 > Codename: mantic > Date: Tue, 19 Sep 2023 23:07:01 UTC > Architectures: amd64 i386 > Components: main restricted > Description: Ubuntu Mantic 23.10 > Acquire-By-Hash: yes > That would be useful info. Ideally we would have a standard format for this file across all distros, perhaps something that VBE can help with. Regards, Simon
