What error did grub-install give? All I see here is that you have an unreadable UEFI variable. Also, what make, model and BIOS version?
-- Jared Dom?nguez OS Architect Linux Engineering Dell | Client Product Group On Jun 21, 2017 5:03 AM, saulius <sasha.shoko...@gmail.com> wrote: Package: efibootmgr Version: 0.11.0-3 Severity: critical Justification: breaks the whole system Dear Maintainer, Duering installation of Stretch grub-install failed -- System Information: Debian Release: 8.8 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages efibootmgr depends on: ii libc6 2.19-18+deb8u10 ii libefivar0 0.15-3 ii libpci3 1:3.2.1-3 ii zlib1g 1:1.2.8.dfsg-2+b1 efibootmgr recommends no packages. efibootmgr suggests no packages. -- no debconf information *** /home/saulius/Documents/efibootmgr.log # efibootmgr -v efibootmgr: Skipping unreadable variable Boot0001: Input/output error BootCurrent: 0004 Timeout: 1 seconds BootOrder: 0004,0000,0002,0003,0001 Boot0000* Windows Boot Manager HD(2,e1800,32000,12e6fe4a-3a2a-460c-88dc- cd16d7c6acdd)File(\EFI\MICROSOFT\BOOT\BOOTMGFW.EFI)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...d............... Boot0002 UEFI: IP4 Intel(R) Ethernet Connection (H) I219-V ACPI(a0341d0,0)PCI(1f,6)MAC(MAC(4ccc6a07d477,0)..BO Boot0003 UEFI: IP6 Intel(R) Ethernet Connection (H) I219-V ACPI(a0341d0,0)PCI(1f,6)MAC(MAC(4ccc6a07d477,0)030d3c000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000..BO