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The problem with (the press of) science

mayo 09, 2016

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From this

to that

and finally to this

Full source here:

science

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How to fix the kernelstub.Drive : ERROR Could not find a block device for the a partition. This is a critical error and we cannot continue AND Can't update kernel and initramfs in pop_os

This applies to computers with NVMe disks For some reason, at one point my pop_os stopped working and updating as expected. The following error appeared: kernelstub.Drive : ERROR Could not find a block device for the a partition. This is a critical error and we cannot continue. The source of the problem is that pop_os has at least four partitions: /boot/efi , /recovery, / and swap . The problem is that the /boot/efi partition is not mounted. To fix it you should look for the identification of the boot/efi partition From a terminal, run: lsblk -f You should see something like this: and you will see NOT MOUNTED the /boot/efi, so that should be blank. To fix this, edit the fstab as follows sudo gedit /etc/fstab and add this line # new for efi PARTUUID= <copy here your UUID of the nvme0n1p1> /boot/efi vfat umask=0077 0 0 save, close and mount sudo mount -a or restart, and that is, fixed!

Install epicalc in R

Since epicalc was removed from the CRAN repos and replaced (seems to) by epiDisplay . (see http://stackoverflow.com/questions/32316360/why-was-package-epicalc-removed-from-cran) here is an alternative way to install in R (copy and paste) # Download package tarball from CRAN archive and install Epicalc download.file(url = "http://cran.r-project.org/src/contrib/Archive/epicalc/epicalc_2.15.1.0.tar.gz", destfile = "epicalc_2.15.1.0.tar.gz") install.packages(pkgs="epicalc_2.15.1.0.tar.gz", type="source", repos=NULL) unlink("epicalc_2.15.1.0.tar.gz")

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