IMac saying no bootable device in startup

Please someone help me!!
Ok, so I wanted windows 7 for my iMac so I created a bootcamp partition and installed windows 7 on my iMac. Everything was running smooth than today booting my mac it showed me (no bootable device insert boot disk and press any key)
Also I tried the alt opinion key and it didn't work, I don't know if it's my keyboard because yesterday I spilled a little bit of chocolate on it, and from yesterday my keyboard was acting strange.
So please someone help, I feel as if it's the keyboard but I don't know for sure. Help

Then you need to do this:
Reinstalling Lion/Mountain Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
This may help but if not then you will need to erase the OS X volume then reinstall as below:
Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
  1. Select Disk Utility from the main menu and click on the Continue button.
  2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
  3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
        the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
  4. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

Similar Messages

  • Computer saying no bootable device on startup

    Computer saying no bootable device on startup

    Try holding down the Option key while booting.
    Hopefully you'll see the Startup Manager window where you can select the startup disk then click Restart.

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    Hold down the Alt/Option-key at startup of your iMac to get the Boot Selection screen.
    From that choose to boot into OSX.
    Once in OSX go to System Preferences then Startup Volume and reset your OSX to be the default.
    The new iMacs have OSX 10.7 Lion preinstalled and don't come with any CD/DVD anymore.
    Instead OSX Lion includes a new feature called "Lion Recovery".
    Have a read here About Lion Recovery
    Stefan

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    My iMac won't boot....Msg says "NO BOOTABLE DEVICE--INSERT BOOT DISK ...
    Posted: Jan 17, 2011 11:44 AM  
    I'm getting this message again. When I restart using the option key everything is ok. When the computer goes to sleep it has the above message. Is there a setting I need to turn off so this doesn't happen all the time? Thanks.
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    Hi,
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    Reboot holding down the Option key between the tone and the apple logo w/pinwheel.  When the boot manager gives you a selection of boot partitions, choose your Lion partition.  Once booted, go to System Preferences > Startup Disk > select your Lion partition.
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    Hi Lexie,
    Try these steps
    When the grey screen appears when you first switch on the mac, hold down the alt key straight away until a hard drive icon pops up. If this doesnt work step 2
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    When you turn the mac on hold Command+Option+P+R before the grey screen appears and hold this until the mac restarts and gives you 3 beeps. Then let go and it should work This command just resets the PRAM and NVRAM which is just a small part of memory that holds simple information such as the startup disk.
    All of these steps will not make you reinstall anything or damage any of your data.
    Good luck!

  • Had diagnostics check done at Apple Store. Passed Got home, pushed power button, and screen says No bootable device-- insert boot disk and press any key?

    What happened at the Apple store that caused my computer to do this.
    It passed the diagnostic check with flying colors. So I got the green light from the Genius to purchase the MacBook Pro.
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    What happened? He said it would be like a new MacBook Pro when I got home and turned it on. This isnt like that at all.
    Someone please advise me what to do? The Apple store is closed now.   :-(

    It's trying to boot from a Boot Camp volume that doesn't have a working installation of Windows. Restart and hold down the option key until you see one or more disk icons. Select the one representing your Mac OS boot volume and press return. When the boot is complete, open System Preferences > Startup Disk and set the Mac OS volume as the default boot device.

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                     Checkurtech
    ****Click the White Kudos star to say thanks****
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    Hello,
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    I'm hoping there will be a simple solution that I can do whenever I get this error message but I'm guessing there won't be. I  apologize in advance because I really don't know much about computers so I may have trouble understanding computer jargon..
    Thanks!

    Without knowing the product involved it is hard to help. You are correct there is likely no magic bullet if you are getting "no bootable device" other than shutting it down and trying to boot again. A 2009 laptop is now 4 years old and that is about the expected life of a laptop although this one seems to have been snakebit from the start.
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  • What do I do if my laptop keeps saying checking media fail and it keeps saying no bootable device

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    checking media failed and then it says no bootable device
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  • Macs don't show me created the partition for windows. And if through Bootcamp that says "No bootable device found" . Please HELP.

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    Thank you! All established, but a new problem with Windows 7 partition. If you install Windows on a Mac, say you gave 30GB on widows, after installation you have 2GB from 30GB, while the size of the files in Windows is 18 GB, should be free 12 from 30. Hidden files on large amounts of no (100 MB all hidden files together). Know that there is a disk which reserves memory for the system, but I don't have, I look through the taskbar there is a disk with osx and bootcamp and all. What could it be, if you of course know.

  • My Mac book pro displays black screen says no bootable device insert boot disk. I have no boot disk to insert. What should i do.no bootable device"

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  • After install it just says "No bootable device found" [SOLVED]

    I have been trying (several times now) to install Arch Linux. After the install, it just showed the message "No bootable device found".
    I have already asked for a solution here, but until now no one could really help me.
    I will paste my text from the other site here, to explain exactly my situation:
    I've been trying to install Arch Linux. After the installation, it shows the BIOS screen and after that there just comes a message that says "No bootable device found".
    I have retried the whole scenario now some times, still it just shows the same message...
    At installing, I have followed the Unofficial Beginner's Guide from the ArchLinux wiki.
    Here is what I did:
    First of all, I wiped the hard drive (on which before the wipe was Windows Vista installed) and put GPT on it by using gdisk. Then I set up some partitions, which now look as the following (output of parted):
    Model: ATA ST9160310AS (scsi)
    Disk /dev/sda: 160GB
    Sector size (logical/physical): 512B/512B
    Partition Table: gpt
    Disk Flags:
    Number  Start   End     Size    File system     Name                 Flags
    1      1049kB  2097kB  1049kB                  BIOS boot partition  bios_grub
    2      2097kB  107MB   105MB   ext2            Linux filesystem     
    3      107MB   21.6GB  21.5GB  ext4            Linux filesystem     
    4      21.6GB  30.2GB  8590MB  linux-swap(v1)  Linux swap           
    5      30.2GB  160GB   130GB   ext4            Linux filesystem     
    Then I mounted the root partition (sda2) to /mnt, after that also the boot and the home partition (sda3 and sda5) to /mnt/boot and /mnt/home and at the end formatted and activated the swap partition (sda4).
    Now I began installing the base system. After selecting the mirrors, I installed base and base-devel.
    At the end of the install I generated an fstab.
    Then I finally chrooted into /mnt, set up some Locales, set a root password and then installed and configured Grub2, exactly as it is explained here.
    At the end I exited from the chroot environment, unmounted the partitions and rebooted. You know the rest... It just showed the message that it coudn't find any bootable devices.
    By the way, I tried to install it on this computer.
    Hopefully someone finds out what I did wrong, thanks in advance!
    Last edited by brgr (2013-04-03 17:58:20)

    So, here is the /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 ###
    insmod part_gpt
    insmod part_msdos
    if [ -s $prefix/grubenv ]; then
    load_env
    fi
    set default="0"
    if [ x"${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 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,gpt3'
    if [ x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 f8d04422-e0a0-486e-ab$
    else
    search --no-floppy --fs-uuid --set=root f8d04422-e0a0-486e-abfd-43fa63f5e10e
    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_input console
    terminal_output gfxterm
    set timeout=5
    ### END /etc/grub.d/00_header ###
    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Arch GNU/Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'g$
    load_video
    set gfxpayload=keep
    insmod gzio
    insmod part_gpt
    insmod ext2
    set root='hd0,gpt2'
    if [ x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 4ada76a3-b73a$
    else
    search --no-floppy --fs-uuid --set=root 4ada76a3-b73a-4ddd-94e2-e723e15cdc84
    fi
    echo 'Loading Linux core repo kernel ...'
    linux /vmlinuz-linux root=UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e ro quiet
    echo 'Loading initial ramdisk ...'
    initrd /initramfs-linux.img
    menuentry 'Arch GNU/Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $m$
    load_video
    set gfxpayload=keep
    insmod gzio
    insmod part_gpt
    insmod ext2
    set root='hd0,gpt2'
    if [ x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 4ada76a3-b73a$
    else
    search --no-floppy --fs-uuid --set=root 4ada76a3-b73a-4ddd-94e2-e723e15cdc84
    fi
    echo 'Loading Linux core repo kernel ...'
    linux /vmlinuz-linux root=UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e ro quiet
    echo 'Loading initial ramdisk ...'
    initrd /initramfs-linux-fallback.img
    ### 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/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 ###
    and here the /etc/fstab:
    # /etc/fstab: static file system information
    # <file system> <dir> <type> <options> <dump> <pass>
    # /dev/sda3 LABEL=system
    UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e /mnt ext4 rw,relatime,data=ordered 0 1
    # /dev/sda2 LABEL=boot
    UUID=4ada76a3-b73a-4ddd-94e2-e723e15cdc84 /boot ext2 rw,relatime 0 2
    # /dev/sda5 LABEL=userdata
    UUID=964b46b9-8b33-4978-bcef-5c9e41ade8c6 /home ext4 rw,relatime,data=ordered 0 2
    # /dev/sda4 LABEL=swap
    UUID=276da045-ffba-4b20-9230-2540898541b1 none swap defaults 0 0
    # /dev/sda3 LABEL=system
    UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e /mnt ext4 rw,relatime,data=ordered 0 1
    # /dev/sda3 LABEL=system
    UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e / ext4 rw,relatime,data=ordered 0 1
    # UUID=f8d04422-e0a0-486e-abfd-43fa63f5e10e LABEL=system
    /dev/sda3 /mnt ext4 rw,relatime,data=ordered 0 1
    # UUID=4ada76a3-b73a-4ddd-94e2-e723e15cdc84 LABEL=boot
    /dev/sda2 /boot ext2 rw,relatime 0 2
    # UUID=964b46b9-8b33-4978-bcef-5c9e41ade8c6 LABEL=userdata
    /dev/sda5 /home ext4 rw,relatime,data=ordered 0 2
    # UUID=276da045-ffba-4b20-9230-2540898541b1 LABEL=swap
    /dev/sda4 none swap defaults 0 0
    @Scimmia: I will try this out tomorrow, I don't have enough time to do it now.

  • Why does it say No bootable device Insert bootable device?

    Why does it say No bootable device Insert bootable device?

    Can i suggest you spend more time explaining the situation, what you are doing, what has been done recently, etc?   One sketchy line is not much help.
    That said, i will guess that yu are trying to turn on your mac, and it gve you that message, immediately.
    It means that soemthing has caused it to not recognize your hard disk and the OSX software on it.  It could be:
    1. a dmaaged disk
    2. corrupted software
    3. a firmware bug
    4. a hardware failure
    Most likely the software has been corrupted at least slightly.
    The best first step is to boot from your original CD and run disk diagnostics/ repairs on the hard drive.
    I hope that fixes it.
    Then go buy an external bootabl hard drive and begin making complete, bootable backups on  weekly basis.
    Grant

  • I tried installing windows and something went wrong and now it seems I have erased Mac OS too because when I turn it on, it says Insert bootable device

    I tried installing windows and something went wrong and now it seems I have erased Mac OS too because when I turn it on, it says Insert bootable device. Now what should I do?

    Welcome to Apple Support Communities
    Press Option key on boot and select the OS X partition. If it isn't here, press Command and R keys on boot, open Disk Utility, erase the drive and install Lion or Mountain Lion

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