I previously posted here with this question, which is now resolved. I am trying to install ubuntu 15.10 on my macbook pro with a flash drive. Specifically, I am following these instructions I found by searching, however I did not follow Part 1 of this guide since I am using a flash drive that my friend put Ubuntu onto already. I hope this is not related to the problem that I am having now.
I am now up to part 4: making Ubuntu bootable. I am up to the step where I have to type into terminal:
grub-mkconfig -o boot/grub/grub.cfg And this is the results that I get: Generating grub configuration file ... Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported. Found linux image: /boot/vmlinuz-4.2.0-38-generic Found initrd image: /boot/initrd.img-4.2.0-38-generic Found linux image: /boot/vmlinuz-4.2.0-16-generic Found initrd image: /boot/initrd.img-4.2.0-16-generic grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map. done When I use
cat /boot/grub/device.map (which I found in a similar forum post)
All I get is:
(hd0) /dev/disk/by-id/ata-APPLE_SSD_SM0256F_S1K4NYAFC30996 (hd1) /dev/disk/by-id/usb-SanDisk_Cruzer_4C531001431122101253-0:0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sudo fdisk -1 gives me:
sudo: unable to resolve host ubuntu Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/loop0: 1.1 GiB, 1130688512 bytes, 2208376 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/sda: 233.8 GiB, 251000193024 bytes, 490234752 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: BD61344F-612D-4DB6-9691-47475BB7DFE3 Device Start End Sectors Size Type /dev/sda1 40 409639 409600 200M EFI System /dev/sda2 409640 425544751 425135112 202.7G Apple Core storage /dev/sda3 425544752 426814287 1269536 619.9M Apple boot /dev/sda4 426814288 431791719 4977432 2.4G Apple HFS/HFS+ /dev/sda5 431792128 447791103 15998976 7.6G Linux swap /dev/sda6 447791104 490233855 42442752 20.2G Linux filesystem Disk /dev/sdc: 29.8 GiB, 32015679488 bytes, 62530624 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x429817b4 Device Boot Start End Sectors Size Id Type /dev/sdc1 * 0 2301535 2301536 1.1G 0 Empty /dev/sdc2 2279532 2284075 4544 2.2M ef EFI (FAT-12/16/32) root@ubuntu:/# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
root@ubuntu:/# cat /boot/grub/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi if [ "${next_entry}" ] ; then set default="${next_entry}" set next_entry= save_env next_entry set boot_once=true else set default="0" fi if [ x"${feature_menuentry_id}" = xy ]; then menuentry_id_option="--id" else menuentry_id_option="" fi export menuentry_id_option if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { if [ x$feature_all_video_module = xy ]; then insmod all_video else insmod efi_gop insmod efi_uga insmod ieee1275_fb insmod vbe insmod vga insmod video_bochs insmod video_cirrus fi } if [ x$feature_default_font_path = xy ] ; then font=unicode else insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi font="/usr/share/grub/unicode.pf2" fi if loadfont $font ; then set gfxmode=auto load_video insmod gfxterm set locale_dir=$prefix/locale set lang=en_US insmod gettext fi terminal_output gfxterm if [ "${recordfail}" = 1 ] ; then set timeout=30 else if [ x$feature_timeout_style = xy ] ; then set timeout_style=hidden set timeout=0 # Fallback hidden-timeout code in case the timeout_style feature is # unavailable. elif sleep --interruptible 0 ; then set timeout=0 fi fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray if background_color 44,0,30,0; then clear fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" if [ "${1}" = "keep" ]; then set vt_handoff=vt.handoff=7 else set vt_handoff= fi } if [ "${recordfail}" != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi linux /boot/vmlinuz-4.2.0-38-generic.efi.signed root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro quiet splash $vt_handoff initrd /boot/initrd.img-4.2.0-38-generic } submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { menuentry 'Ubuntu, with Linux 4.2.0-38-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-38-generic-advanced-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-38-generic ...' linux /boot/vmlinuz-4.2.0-38-generic.efi.signed root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro quiet splash $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-38-generic } menuentry 'Ubuntu, with Linux 4.2.0-38-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-38-generic-init-upstart-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-38-generic ...' linux /boot/vmlinuz-4.2.0-38-generic.efi.signed root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro quiet splash $vt_handoff init=/sbin/upstart echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-38-generic } menuentry 'Ubuntu, with Linux 4.2.0-38-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-38-generic-recovery-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-38-generic ...' linux /boot/vmlinuz-4.2.0-38-generic.efi.signed root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-38-generic } menuentry 'Ubuntu, with Linux 4.2.0-16-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-16-generic-advanced-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-16-generic ...' linux /boot/vmlinuz-4.2.0-16-generic root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro quiet splash $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-16-generic } menuentry 'Ubuntu, with Linux 4.2.0-16-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-16-generic-init-upstart-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-16-generic ...' linux /boot/vmlinuz-4.2.0-16-generic root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro quiet splash $vt_handoff init=/sbin/upstart echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-16-generic } menuentry 'Ubuntu, with Linux 4.2.0-16-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.2.0-16-generic-recovery-e3b2cb67-7623-4f39-a4e5-1b3082a03c02' { recordfail load_video insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt6' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt6 --hint-efi=hd0,gpt6 --hint-baremetal=ahci0,gpt6 e3b2cb67-7623-4f39-a4e5-1b3082a03c02 else search --no-floppy --fs-uuid --set=root e3b2cb67-7623-4f39-a4e5-1b3082a03c02 fi echo 'Loading Linux 4.2.0-16-generic ...' linux /boot/vmlinuz-4.2.0-16-generic root=UUID=e3b2cb67-7623-4f39-a4e5-1b3082a03c02 ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.2.0-16-generic } } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/30_uefi-firmware ### ### END /etc/grub.d/30_uefi-firmware ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### root@ubuntu:/# 1 Answer
This should be better as a comment but I still don't have permission for it. I'm an ex developer of GRUB.
What is probably happening is that grub-mkconfig fails to detect the modules necessary for you /dev/sdc1 . It is not a problem if you driver does not contais your /boot (where grub stores it modules) or the kernel files to boot.
Please share your /boot/grub/grub.cfg as well
Change the value of GRUB_TIMEOUT to 10
What is the output of sudo fdisk -l what is the filesystem in sdc1? at grub prompt type c (to enter shell) and type ls what drivers it shows to you?
