Package: os-prober Severity: wishlist
Hey. I think the following would be a nice feature for os-prober when it detects other Linuxes: Also extract their kernel parameters, so that it can be added to the e.g. grub menu entries. This sounds easier than may be: There is no canonical place where the kernel parameters are stored. This varies from distribution to distribution, and worse from boot loader to boot loader. For example in Debian with grub, it's /etc/default/grub's GRUB_CMDLINE_LINUX_DEFAULT and GRUB_CMDLINE_LINUX. But if several boot loaders are installed in such Debian who knows which one is actually the right one? Possible solutions may be to check whether multiple known boot loaders are installed and simply don't extract the parameters then and print a warning. Or compare them all and use them only when all match. For other distros it may be worse... e.g. I think to remember that RHEL had no real place for the parameter except grub.cfg itself, and when that contains multiple entries... which should one take? Perhaps the soltuion would be to create a grub entry for each of the grub.cfg entries of the probed partition. These are typically different kernel versions, any one likely would want all of them anyway. Actually, parsing that parameters may even be necessary to make the other Linux boot correctly. Cheers, Chris.
