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I'v been install and starting using OpenSuse 15 at my disk several weeks ago, the special setup of this installation that is I chose the /boot located in a USB pendrive, so no boot partition needed on my hard drive.

The first time I have OpenSuse 15 updated without the USB pendrive plugged in, the system crashed until with it, but since then seems it doesn't need it to participate in updating, no crash anymore.

Would it be better updating the system with the boot partition which is in my USB pendrive?

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Typically /boot is needed when updating the system only when the updates include:

  • an updated kernel package
  • anything that causes the initramfs file to be updated (e.g. an updated kernel module)
  • an updated bootloader

If the set of updates to be installed does not include any of those, then there will be no modifications to /boot.

  • How to verify if my kernel has been updated or not both in USB and local drive? – hexatuchem Feb 16 at 7:47
  • To check the kernel version: uname -r 4.12.14-lp150.12.25-default Is it the latest? is it OK? – hexatuchem Feb 17 at 8:36
  • I don't have an OpenSuse 15 VM at hand, but assuming the layout is similar to SLES 12, you should see in /boot one or more files named vmlinuz-<kernel version string> - they should correspond to kernel packages you have installed on your system. According to your uname -r, you seem to be using the default kernel packages, so run rpm -q kernel-default to see which kernel versions the package management system thinks you should have installed right now. The version number of the newest vmlinuzfile and the uname -r output should both match the latest kernel package installed. – telcoM Feb 17 at 11:03
  • If rpm -q kernel-default listing includes a kernel package version that's newer than your uname -r, then you are currently missing an update, and in that case you should make sure the USB is mounted and then reinstall the latest kernel-default package. (For example, just command the package management tools to remove that specific version of the kernel-default package and then to install it again.) – telcoM Feb 17 at 11:09
  • Before inserting the bootable USB I find my system also contains a boot folder under /, which contains some <kernel version string> are newer than the files in my USB. I'v never known boot mountpoint in USB and update without it would cause me using old version kernels. Thank you telling me the truth. – hexatuchem Feb 18 at 14:00

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