In MacBook Pro 2015, the inbuilt SD Card Reader needs to be filtered out. Comment#16 helped me fix the issue.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lvm2 in Ubuntu. https://bugs.launchpad.net/bugs/1834250 Title: update-grub complains about non-existent drives (due to cardreader) Status in lvm2 package in Ubuntu: Confirmed Bug description: sudo update-grub Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/init-select.cfg' Generating grub configuration file ... /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found Found linux image: /boot/vmlinuz-5.0.0-17-generic Found initrd image: /boot/initrd.img-5.0.0-17-generic Found linux image: /boot/vmlinuz-5.0.0-16-generic Found initrd image: /boot/initrd.img-5.0.0-16-generic /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found /dev/sdc: open failed: No medium found /dev/sdd: open failed: No medium found /dev/sde: open failed: No medium found /dev/sdf: open failed: No medium found Adding boot menu entry for EFI firmware configuration done -- lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 3.7T 0 disk ├─sda1 8:1 0 512M 0 part /boot/efi ├─sda2 8:2 0 732M 0 part /boot └─sda3 8:3 0 3.7T 0 part └─sda3_crypt 253:0 0 3.7T 0 crypt ├─kubuntu--vg-swap_1 253:1 0 976M 0 lvm [SWAP] └─kubuntu--vg-root 253:2 0 3.7T 0 lvm / sdb 8:16 0 3.7T 0 disk └─sdb1 8:17 0 3.7T 0 part sdg 8:96 0 7.3T 0 disk └─sdg1 8:97 0 7.3T 0 part /media/scott/8TB Ext Drive sr0 11:0 1 15.7G 0 rom -- cat /etc/default/grub GRUB_DEFAULT=0 GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on" GRUB_CMDLINE_LINUX="" ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: grub2-common 2.02+dfsg1-12ubuntu3 ProcVersionSignature: Ubuntu 5.0.0-17.18-generic 5.0.8 Uname: Linux 5.0.0-17-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu3 Architecture: amd64 CurrentDesktop: KDE Date: Tue Jun 25 15:05:29 2019 InstallationDate: Installed on 2019-06-14 (10 days ago) InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190614) SourcePackage: grub2 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1834250/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
