What Bootloader or Boot Manage Is OS X Based From?
Hi. Just curious. Since Linux and OS X have origins in Unix (Linux isn't Unix based though I believe) does it base its bootloader or boot manager (the one you see when you hold Option on reboot) from popular bootloaders like Grub or Lilo? Is OS X's boot manager/bootloader embedded in the EFI chip/firmware or it's in one of the hidden system files of OS X?
Thank you in advance.
Gbu.
P.S. Although I've played with Linux before on the PC, I've been trying to play with Linux (Ubuntu 11.10, Live CD or installing it to a Flash drive and USB external) on my iMac but I had to let it go coz' I can't make it boot on my iMac (late 2009 i7) inspite of the command line I had typed based on Ubuntu forum posts and the netboot type of install). The Live CD booted ok on a virtualization machine like VirtualBox (from Oracle) but from this VM I can't make it see my USB external to install it there.
OS X uses the Darwin bootloader that most likely derived from the one used by FreeBSD.
If you partition your drive so you have a separate volume for Linux, then install Linux from the Live CD it will install the Grub bootloader modified to enable you to choose which OS to boot at startup time. Alternatively, the rEFIt bootloader provides a startup GUI sort of akin to the OS X boot manager.
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What type of internal table should I use based from my scenario...
Hello Experts,
I am currently having a dillema here because I am trying to optimize a certain
part of a report where in the internal table contains around 300,000 lines of
records. The original internal table is of type standard table. So what the original
programmer did was to delete certain records in a given condition then sort it
by fields 1 and 2 in ascending order. Now, it then loops through that internal table
but gives run time error because it exceeded the limit in our prod server which is only 10 mins.
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types: begin of t_itab,
field1 like pa0001-pernr,
field2 like pa0001-ename,
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data: ls_itab type t_itab,
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aRs -
Efibootmgr & gummiboot replaced UEFI entry for Windows Boot Manager
TLDR
I am now in Windows 7 and dual boot with Arch is working fine.
But before I update Arch, I would like to understand what happened, as in why adding an efibootmgr entry for Arch replaced/deleted the Windows Boot Manager entry although I followed the BG.
The status of my UEFI boot menu was, before the installation of Arch:
Windows Boot Manager
AHCI HDJ... (hard drive 1)
AHCI ST... (hard drive 2)
While working through the BG, I decided to use gummiboot=> https://wiki.archlinux.org/index.php/Be … #Gummiboot. So:
pacman -S gummiboot
gummiboot install
pacman -S efibootmgr
gummiboot install
[some error ocurred, as mentioned in red box]
efibootmgr -c -L "Gummiboot" -l /EFI/gummiboot/gummibootx64.efi
nano /boot/loader/entries/arch.conf
title Arch Linux
linux /vmlinuz-linux
initrd /initramfs-linux.img
options root=/dev/sdb3 ro
[CTRL + X, Y, Enter]
exit
umount /mnt/{boot,home,}
reboot
I then saw a new list of the UEFI boot order:
Gummiboot
AHCI HDJ... (hard drive 1)
AHCI ST... (hard drive 2)
Chose Gummiboot and it brought up a gummiboot menu with entries
Arch Linux
Windows Boot Manager
EFI Shell something
Selected Arch Linux and it went to a message something along "boot device ' ' not found" and I was in a shell which was, I think, rootfs.
I rebooted via the button on my desktop and out the Arch Linux USB drive back. After mounting the partitions:
gummiboot remove
efibootmgr
[0000: Windows Boot Manager
[0001: Arch Linux
[0002: AHCI HDJ...
[0003: AHCI ST...
exit
umount /mnt/{boot,home,}
reboot
Now I booted into a black screen with white text which said something "Reboot and select proper Boot device"
=> Inserted Win 7 64-bit DVD, repaired the boot sector. Rebooted, saw I had these entries again:
Windows Boot Manager
AHCI HDJ... (hard drive 1)
AHCI ST... (hard drive 2)
The boot into Windows worked fine. Rebooted, chrooted into my install again and:
efibootmgr
[0000: Arch Linux
[0001: Windows Boot Manager
[0003: AHCI HDJ...
[0003: AHCI ST...
efibootmogr -b 0 -B
Then I used the EFISTUB method:
efibootmgr -c -L "Arch Linux" -l /vmlinuz-linux -u "root=/dev/sdb3 ro initrd=/initramfs-linux.img"
efibootmgr
[0000: Windows Boot Manager
[0001: Arch Linux
[0002: AHCI HDJ...
[0003: AHCI ST...
exit
umount /mnt/{boot,home,}
reboot
On reboot, 'Windows Boot Manager' was again replaced by 'Arch Linux'.
=> Inserted Win 7 64-bit DVD, repaired the boot sector.
Rebooted, I have now Windows Boot Manager + Arch Linux and dual boot works now.
My questions:
What is going on with efibootmgr replacing/deleting the Windows entry? Is there something wrong with my UEFI menu?
In connection with 1., I would like to sync the EFISTUB Kernel (wiki entry) before I run pacman -Syu. Can I do that now?
Can I uninstall gummiboot now?
Last edited by jones (2013-07-11 12:30:55)henrik wrote:So in light of your post, I decided to ditch EFISTUB + gummiboot and try out GRUB. Thanks for clearing it up a bit. Which is what confuses me a great deal more, as GRUB/gummiboot obviously do not meddle with Microsoft's EFI files. Right?
EFI relies on two things to boot:
Boot loader program files on the ESP (or occasionally elsewhere).
NVRAM entries pointing to the boot loader files.
Your own problems seem to be with the NVRAM entries, not with the boot loader files themselves. Unfortunately, managing those NVRAM entries has proven to be problematic because of bugs in specific EFI implementations, bugs in efibootmgr and other tools that manipulate the NVRAM entries, poor documentation, and other factors.
To answer your question, though, no boot loader should mess with another's files. Such things can happen, though. The number of bugs that cause Microsoft's boot loader (EFI/Microsoft/Boot/bootmgfw.efi) to be treated deferentially have provoked some tools to use it as a target location for other boot loaders. (Ubuntu's Boot Repair tool does this in a rather overzealous way. So does my own rEFInd installer script, but only under certain narrow circumstances.) Also, the EFI/BOOT/bootx64.efi file is a special case; it's the fallback bootloader that's used when NVRAM entries are missing or don't work, and various boot loader installation procedures place copies in that location, so it can be overwritten and could contain just about anything.
However, the whole thing happened again with GRUB. So I did the whole "repairing Boot problems" with the Windows DVD rescue thingy again and deleted all non-Microsoft files from the EFI partition, /dev/sda1.
Then I formatted / (root) and installed arch again and followed the Beginners' Guide which suggest mounting /dev/sda1/ to /mnt/boot (in contrast to the GRUB entry where the ESP should be mounted to /mnt/boot/efi).
I strongly advise against doing a complete re-installation just to overcome a boot loader problem. Instead, figure out what the problem is and fix it. Doing a complete re-installation is not likely to fix anything, and depending on precisely how you do it, you could end up with a more complex problem. The reason is that the re-installation is not likely to erase the NVRAM entries from the old installation, so you could find that you've got additional stray NVRAM entries. If you do happen to fix the problem by re-installing (say, because you selected a different installation option), you're not likely to know what changed to fix the problem, so you could end up in the same boat should you need to re-install again in the future.
But it did not show this line
Found Windows 7 (loader) on /dev/sda1
... how come??
I've given up trying to understand GRUB's configuration scripts. You could try creating an entry manually by editing /etc/grub.d/40_custom; or you could forget about using the GRUB scripts and create a hand-crafted grub.cfg; or you could forget about using GRUB at all. I'm not a fan of GRUB, so my personal choice is the final one.
So for all the headache and time ... should I delete the EFI partition and recreate it maybe? I think it's possible using the Windows 7 DVD.
But somehow using efibootmgr on my UEFI list somehow invalidated the Windows entry.
Reviewing your posts, it seems that you want to use the EFI stub loader directly, but you're having problems with that because when you add it to the NVRAM entries, Windows drops off your boot manager's boot options. The obvious solution to this problem is to forget about adding the EFI stub loader directly to the NVRAM entries, and instead add a boot manager that can handle either a Linux kernel or the Windows boot loader. (IMHO, this is the superior solution anyhow; I disagree with the Arch wiki's emphasis on using the EFI stub loader "raw.") It seems you were trying to do this with GRUB but had problems booting Windows. Earlier you tried gummiboot but had problems booting Linux. My suggestion is to either go back to gummiboot and fix its problem or try rEFInd. The "device not found" error you reported with gummiboot is usually caused by either a missing (or incorrectly-specified) initrd file or by an incorrectly-specified "root=" option passed to the kernel. Check those possitilities, and if you need help, report what happens in more detail. If necessary, take a digital photo of the screen and post it here. (Make sure it's legible, though!)
You can try rEFInd with minimal disk by using a CD-R or USB flash drive image. Boot with that and your NVRAM and ESP won't be affected at all. If you can get rEFInd working from the flash drive, you can then install it to your hard disk and it should continue working. Note that you probably won't be able to boot Linux directly from rEFInd with your current configuration without adding a "root=" specification to the kernel command line. You can do this by hitting F2 or Insert twice rather than launching Linux by pressing Enter. Alternatively, you can create a refind_linux.conf file in the directory that holds your kernel. That file's contents are described in the rEFInd documentation. -
Windows 7 start up boot manager problem
I am using inbuilt Windows 7 ( 64 bit , Home Basic ) on my Sony VAIO laptop . For last few days , i am having a very annoying problem during the start up .
Every time i start my laptop , very soon after the VAIO logo appears , the boot manger prompt appears having "Windows 7" option selected and within fraction of a second it disappears and keep coming till i keep on pressing the ENTER button to start
the OS . I am only using the Windows 7 OS on the system . To get rid rid of it i tried few options suggested on websites - i changed the BIOS settings , in 'msconfig' tried some alternative options in the boot tab and finally i also formatted my
laptop but could not get rid of the issue . Please help me out with this issue .
Thanks,
Shantanu
Hello,
my problem is similar but all sollutions offered are not working for me.
The problem: the bootmanager appears showing available OS and gives the chance to select. I can chose and the spezified OS starts. I also can make the selected OS starting with no timeout (so, no chance to select anything). But everything I tryed to make the
timeout counting back form soemting inbetween 3 and 999 seconds to cero failed. There is just no timeout.
I tryed to configure timeout via (a) *control panel* > *system & security* > *system* > *advanced system settings* > *advanced* next to *startup & recovery*, then (b) I tryed *msconfig* > *start*, the (c) I tryed to use EasyBCD - but
all, nothing helps me to bring the timeout to work.
What I see when I run bcdedit.exe, the timeout is set propperly (see below) - but sill, it is not working while booting - I have to select the OS manually.
Anybody having an idea, what to do to bring the timeout up and working?
Thx for your help!
Jappie
output of bcdedit.exe:
Windows-Start-Manager
Bezeichner {bootmgr}
device partition=C:
description Windows Boot Manager
locale de-DE
inherit {globalsettings}
default {current}
resumeobject {9266f3c4-cd82-11e3-bbec-c83fe4796fc1}
displayorder {current}
{9266f3c8-cd82-11e3-bbec-c83fe4796fc1}
toolsdisplayorder {memdiag}
timeout 3
displaybootmenu Yes
Windows-Startladeprogramm
Bezeichner {current}
device partition=C:
path \Windows\system32\winload.exe
description Windows 7
locale de-DE
inherit {bootloadersettings}
recoverysequence {9266f3c6-cd82-11e3-bbec-c83fe4796fc1}
recoveryenabled Yes
osdevice partition=C:
systemroot \Windows
resumeobject {9266f3c4-cd82-11e3-bbec-c83fe4796fc1}
nx OptIn
Echtmodus-Startabschnitt
Bezeichner {9266f3c8-cd82-11e3-bbec-c83fe4796fc1}
device partition=C:
path \NST\AutoNeoGrub0.mbr
description Ubuntu Linux
EDIT:
I found a solution by myself:
(1) via boot-repair I re-installed grub
(2) via Windows 7 install-disc I re-installed the Windows bootloader (went into sysrepair tools -> via console with "bootrec /fixmbr" and then "bootrec /fixboot")
(3) than, back in Windows 7, I used EasyBCD 2.2 community edition, I deleted the old entry for Linux and added a new one pointing to the right place for grub
(4) finaly, I went into Windows 7 systemsettings to set timeout to 3 second (what was impossible to be done by EasyBCD for whatever reason)
Now it works fine - both OS can be started and the timeout is working again. -
Windows 8.1 not booting : "Boot manager failed to find OS loader"
Hello all,
I know this question came up before, but I have being trying to fix this for many days now, without luck and I feel I need some new ideas...
The short story:
My Windows 8.1 is not booting, and gets trapped in cycle of Boot Manager until I tell the UEFI to boot from disk or USB
I can boot up from external CD or USB Windows RE, from which I can get to prompt line
In the log file in C:\Windows\System 32\LogFiles\Srt\SrtTrail.txt I read:
Boot manager failed to find OS loader
Repair Action File Repair à Failed (err code 0x4001)
Repair Action Boot Config Data Store Repair à Failed (err code 0x2)
4. My disk is GPT partitioned, with UEFI Bios
5. I tried the typical Bootrec commands: FixMbr, FixBoot, ScanOs, RebuildBCD but I always get the error:
Identified Windows install:0
6. I tried Bcdedit but I get:
the boot configuration data (BCD) store could not be opened
7. I tried to create a new BCD store in the FAT32 partition (temporarily named "v:\") with
bcdboot c:\Windows /l en-gb /s v: /f ALL
but I get:
Failure when attempted to copy boot files
8. Finally, I noticed that in
C:\Windows\System32\
I DO NOT have the file winload.efi
while in: ESP\EFI\Microsoft\Boot\
I DO have the file Bootmgfw.efi
One question I have is: Is it possible to copy a "healthy" winload.efi from somewhere in my PC into C:\Windows\System32\ ?
Where (which path) could I find it?
Any other ideas? Please help !!!!
Many thanks!! This is literarily driving me crazy because I really don't want to reinstall windows....Hello Kermit_70,
What is your current situation?
Please try the suggestion as aw00t mentioned.
Additionally, please try to use Automatic Repair to fix problems that keep Windows from loading.
For more information, please take a look at the following article.
http://www.eightforums.com/tutorials/2269-system-recovery-options-boot-windows-8-a.html
Please note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Best regards,
Fangzhou CHEN
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected] -
Hi,
I haven't used my slow HDD with windows 7 on it in a while, but today my SDD with windows 8 on it died. I have kept my old OS in a dual boot setup exactly for this rare possibility. I in fact successfully revived my SSD from windows 7.
During the restore procedure I had to boot into both OSes (7 and 8) several times before I managed to get 8 working. I tried a lot of things before one of them struck. (Is that how the phrase goes?
Me Hungary, no good speak English some times...) I am surprised to have found the following unexpected behavior of the new windows 8 branded boot loader:
The new windows boot manager boots almost fully into windows 8 before letting me select an OS.
If I select windows 7, it reboots my computer and loads windows 7, wasting a lot of time... on the windows 8 portion of the boot process, which is simply thrown away if I happen need windows 7 and not 8.
"This is highly inefficient!" — I almost exclaimed aloud... A boot manager should load just enough of itself so that a simple OS selection menu can be presented to the user with minimal keyboard interaction. Only when a selection is made should
it load an OS. I have no use for the new boot manager's mouse control support, and having it appear on the second screen in my dual screen setup is just plain scary. Use the main laptop monitor where the BIOS messages were displaying, and keep the secondary
off until the OS is done booting! By the time my secondary screen turns on, the boot selection menu disappears anyway.
Yes, I only noticed this problem now because I haven't booted into windows 7 for a long time. (300 MB worth of Windows updates were waiting for me indeed.) My boot selection menu timeout is set to 3 seconds instead of 30 so I don't have to pick windows 8
every time.
I am going to wait at least a week for the forum's input before I switch on my own to a faster, minimalist boot manager. I don't know what to use, I'm familiar with:
some minimalist bootstrap loaders
coreboot/linuxbios (recently learned of it)
bootcamp (not really)
acronis OS selector (discontinued before windows 8 came out, probably doesn't support it)
syslinux/isolinux (Linux only, I think)
old Windows bootmgr
more recent Windows ntldr
then this new "inefficient for dual booting" Windows 8 boot manager
and finally grub
Grub feels like the best option as it keeps the windows boot manager intact and supports mac, windows, and linux. All 3 of which will at one point — or has already — come up as a subject or prerequisite in my university.
I don't know how or why I was able to access windows 8's boot loader while my SSD was dead. Was it installed on the HDD, overwriting the windows 7 boot loader? That too is inefficient. I want to completely boot from my SSD. Don't spin up my HDD while I'm
booting my laptop on the go! The shaking of the vehicle I'm in could seriously damage the disk if I run into a pothole (common in my country) with just the right timing, data could be damaged. The entire reason windows 8 is on an SSD is so that it can boot
without accessing my HDD with all its moving parts. My goal with buying an SSD was for the HDD to remain safely offline while I'm in a shaky environment with potholes! Also, what if I want to disconnect the old HDD in the future... Or what if it dies? Will
the windows 8 boot loader die with windows 7? I want the two kept separately and completely independent from each other for exactly this reason.
In summary:
How can I stop windows 8 from almost fully booting before offering the dual boot OS selection menu? Do I need a better Boot loader?
Why was the boot loader that came with windows 8 still working OK while the SSD with windows 8 on it wasn't accessible? Did it sneak its way onto the old HDD? I want a 100% SSD-based boot process. What is the boot loader doing on a different drive? Its
place is on the SSD, with the operating system it belongs to. Not on the HDD of a different OS. Can I move it?
Sincerely,
Daniel "3ICE" Berezvai
p.s.: For windows 7 I only have a repair disk and hidden RECOVERY partition which I kept (came with the laptop, would rather not use it.) The Windows 8 pro DVD (purchased last year) is fine, but I had it moved to a bootable pendrive so I could remove my
optical drive and replace it with an SSD on which windows 8 is installed now. (I also have a vista ultimate DVD, as they were giving them away for free on a Microsoft conference. Funny story.)
p.p.s.: I am subscribed (☑ Alert me) to this topic and will respond to all questions and try all recommended actions right away.
http://3ice.hu/Hi,
Thank you for your post.
From your description, I see the issue you are facing is there is no menu to choose OS when booting dual boot(Windows 7 & Windows 8). Please let me know if I have misunderstood anything.
It seems that the Windows 7 entry is missing, currently, we can use a tool –
EasyBCD to get it back. After downloading it, choose the Add/Edit panel item, select the OS you're missing and let the program detect it. Then simply click the Add button to add the missing OS entry.
At the meantime, here is a related link which demonstrates how to keep Windows 7 as the default OS in dual boot, you may use it for a reference.
How to Dual-Boot Windows 8 While Keeping Windows 7 As Your Default OS
http://blog.laptopmag.com/how-to-dual-boot-windows-8-while-keeping-windows-7-as-your-default-os
[Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy
of this information.]
Regarding your second questions in your first post, you can refer to the following link to know more about dual boot.
Dual
Booting Explained: How You Can Have Multiple Operating Systems on Your Computer
http://www.howtogeek.com/187789/dual-booting-explained-how-you-can-have-multiple-operating-systems-on-your-computer/
[Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy
of this information.]
Hopefully the information is helpful. Please let me know if you have any questions. Thanks for your time.
Best Regards,
Sophia Sun
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. -
Hello all Support Team,
i Have some problem want to know reason and fix it, please help me.
i'm used the HP ProBook 440 G1. My problem is :
1.When i install OS win7 by disc from Microsoft, after first install complete it's reboot and black screen appear with one option to chose is " Windows 7 install [EMS Enable]". I provisional accept the solution from my friend but i still want to know what reason of this issue.
If choose that without remove disc, the laptop will restart and progress installed windows start again from beginning.
If choose that with remove disc, the laptop start to windows normal and everything maybe is fine ( this is my friend's solution).
2.When I reboot this laptop, the screen "Windows boot manager" appear, even only one option to chose is Window 7, then I check in "Boots" by open msconfig, I see only one OS and it's already default OS. But every time I restart the laptop the screen "Windows Boot Manager" always appear, how can i remove this screen and take my laptop enter directly to window ?
That's all my ploblem, please help me fix it.
Thanks and Best Regards,
Katori.Remove the disk unless you want to install Windows.
"When I reboot this laptop, the screen "Windows boot manager" appear, even only one option to chose is Window 7, then I check in "Boots" by open msconfig, I see only one OS and it's already default OS. But every time I restart the laptop the screen "Windows Boot Manager" always appear, how can i remove this screen and take my laptop enter directly to window ?"
If you remove the password you are using, then the notebook will boot right into the operating system. That is not a good practice as there is no security at all.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer -
After Deploying an Image: Windows Boot Manager - Missing ACPI.sys
Hi,
I am currently working on deploying a Windows 7 Pro x64 image to a number of clients over our network using FOG. We used KVM in Ubuntu to build the base image. The image has a small virtual disk for the Windows installation and is deployed to clients with larger
drives. Prior to capture the image, we ran sysprep /generalize /shutdown /oobe /unattend:unattend.xml, then boot the VM to the FOG client and let FOG save off the disk image. We then deploy the image to clients over FOG.
FOG successfully copies the image over, then reboots the PC. The computer attempts to boot from the local hard drive, then fails at the Windows Boot Manager screen, saying:
Windows boot manager
Windows failed to start. A recent hardware or software change might be the cause....
File: \Windows\system32\drivers\ACPI.sys
Status: 0xc0000098
Info: Windows failed to load because a critical system driver is missing or corrupt.
I've updated the client's BIOS, tried a different hard drive, used ATA secure erase to wipe the drive before formatting, and still encounter this same issue with certain client computers. Are there any other steps I can take to resolve this issue?
What files in Panther should I look at (or post) to troubleshoot? I don't see anything too obvious in diagerr, and sestuperr.log is just about empty.We're using two models of 120GB SSDs, and deploying to 5 different motherboards (4 Intel models + 1 MSI model). The issue is most common with the DH55TC Intel boards.
We're using FOG due to budget limits--otherwise, WDT definitely would have been considered. -
Dubious EFI boot manager entries
Hi all,
After attempting to install Fedora on my computer via Boot Camp I ended up with 4 "windows" volumes in the boot manager, all of which give me the "missing operating system" error. I'm not sure how or why, but I imagine somewhere along the line boot camp added all these entries that pointed to incorrect or nonexistent volumes. I used to have Ubuntu installed in the same place as Fedora but had to install it a number of times before I succeeded. Perhaps that has something to do with the problem.
My question is, is there a way to safely edit the boot manager entries (boot.efi?), or, if not, is there a way short of re-installing OSX that I can reset it somehow?
-poddusHi,
What you are seeing might be a result of the number of UEFI enabled devices (all sources) on your PC. Windows 7 in not a UEFI system.
On my PC, the residual Windows Boot Manager entries from previously installed UEFI enabled devices can be eliminated by resetting the BIOS entries to the defaults.
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
HP Photosmart Premium C309G, HP Photosmart 6520
HP Touchpad, HP Chromebook 11
Custom i7-4770k,Z-87, 8GB, Vertex 3 SSD, Samsung EVO SSD, Corsair HX650,GTX 760
Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT -
"An error occured with the boot selection verify media is present and retry" from OS Boot Manager
So I'm trying get my HP ProBook 6550p to boot Linux in UEFI mode.
Some sources say that OS Boot Manager points to \EFI\Microsoft\BOOT\bootmgfw.efi in your ESP, I've placed my EFI Shell there as a PoC test, which of course fails and errors out with the above message.
What am I doing wrong here?That path would be for the Windows UEFI boot manager, which reads the \EFI\Microsoft\Boot\BCD database to get the boot configuration. In order to boot that path, the UEFI firmware has to be configured with that as the default.
If the computer firmware is not configured to boot efi, it will be trying to load the MBR and boot record.
A ufi shell would be in a path such as \EFI\Boot\ShellX64.efi. To get that to work there has to be a shell entry available at boot time. I have only gotten that to work once--and that was NOT on my g7-1117cl laptop.
I have been looking into this for my Pavillion g7-1117cl laptop, so far with no luck. I can boot into the diagnostics on the HP_TOOLS partition under the path \Hewlett-Packard\SystemDiags. This program has the name of SystemDiags.efi or SystemDiags32.efi. Since it can load that efi file it should be able to load bootmgrfw.efi. But it still needs to be configured in the firmware to boot to that file. -
Boot Manager error message on Windows 7 Toshiba Laptop
Well, I will start with what happened to it, though I don't really know. I was on the internet and it started freezing up horribly, then I didn't know what to do so I walked into the room of the house that doesn't get wireless, and gradually it unfroze. Then I went back to the other room got on again, then it just froze again, only this time walking into the next room didn't work, so I pressed the power button and shut it down. Then when I turned it back on I chose "Start Windows Normally" and I entered my password at the login screen, then it was on the screen that says "Welcome" and has the blue loading bar next to it, but I waited for at least 10 minutes and it still hadn't loaded. So, I try safe mode and all I get is a black screen with a mouse cursor, in all safe modes. Well, I decide to go to setup by pressing F2 at the Toshiba screen when you first turn it on. So, I did that and I restored the default settings, then exiting saving the settings, and then I turned it on, expecting it to work or at least have the Welcome thing. It went through the Toshiba screen, then it had a black screen for while , then I got an error message:
WINDOWS BOOT MANAGER
Windows has encountered a problem communicating with a device connected to your computer.
This error can be caused by unplugging a removable storage device such as an external USB drive while the device is in use, or by faulty hardware such as a hard drive or CD-ROM drive that is failing. Make sure any removable storage is properly connected and then restart your computer.
If you continue to recieve this error message, contact the hardware manufacturer.
File: \Boot\BCD
Status: 0xc00000e9
Info: An unexpected I/O error has occurred.
So then what I did was I plugged in the charger, the mouse ( like on a desktop computer, only I stick this in my laptops usb thing) , my ipod, I put in the last cd I had in the disk drive, and I connected my computer to the modem from the other computer that I sometimes get on. It didn't do anything, it still gave me that message.
I would appreciate some help. I just got this computer in December 2009 for Christmas, and I have taken good care of it as far as I can tell. I really can't afford to replace anything right now, but if I have to I will find a way. What makes it worse is that I just got a new video game sent from my grandmother for my birthday....
Thank you for your help/thoughts/crapit looks like a corrupted windows 7 OS or hdd issue , but you might try this one
Remove all usb devices and make sure that only ac adapter is plugged in your computer.
Turn on your computer and start tapping on F8. You should see windows advanced option when you do this.
Select on Safe Mode then Enter. If you can boot to safe mode you can try doing a system restore.
OR
On windows advance option. Select Repair my computer
Just follow the prompt and select system restore.
OR
On windows advance option. Select Repair my computer
Just follow the prompt and Windows Startup Repair
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the only easy day was yesterday.....
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Re: How to install any boot manager on Vista at Satellite A300
I want to install second OS on my A300 but can't make any boot manager work with Vista.
IBM os/2 bootmanager can start Vista, but Vista say that it can't execute winload and hang up, Acronis bootmanager does not see any OS at Vista NTFS disk...You need to do a complete restore.
Ive been working on my own and that was the only way, first go into bios (restart computer push esc right after you restart) go into BIOS, now go to boot, select your hard drive and disable it.
Next restart computer, your restore disk should start may take a minute, let it run until it says you have an error, now restart computer, go back into BIOS turn hard drive on, restart one last time and it should finish takes about an hour or so, any way what I'm saying is 8 out of ten times it's this if you ask a tech they will have you buying thing you do not need because they haven't figured out not everyone is an idiot and fall for their fake remedy for the almighty dollar way to BUSH it up. -
Something has happened where now if I hold down the Option key when I boot, rather than showing me all my bootable options by name as it used to do, it now shows all bootable options by the same name,
"efi boot"...
I clone my hard drive now and then and after doing so I always like to boot with the clone just to see that it is bootable... Always before it has shown both my main drive, by name and icon, and the cloned drive, also by its name and icon. Now, it still shows them with their specific icons but the real drive names are not presented and instead the system calls them both "efi boot"...
What has happened and can I fix this issue???
any help would be appreciated... thanks... bob...You use and ran Disk Warrior?
http://www.google.com/search?q=AlsoftDisk+Warrior+EFIBoot
It is cosmetic. Has existed for years. Not a problem. First saw it back in 10.5.0 if not earlier and thought it was TechTool Pro 4.x issue (the first time I saw that my Intel Mac Pro has GPT and EFI partitions).
So there are hidden partitions. And the boot manager shows EFI (which are 128MB and probably the 'actual' boot loader is there but that is pure guess-speculation).
Google turns up excellent threads
(my way of saying most things already or may exist and worth a read).
http://discussions.apple.com/message.jspa?messageID=10300455
The solution is to simply select the startup disk you want via the
System Preferences Pane."
Open Terminal.app, at the prompt type:
sudo bless --folder /System/Library/Coreservices --bootefi
(press return, enter your admin password, press return again)
The startup disk name should now equal the volume name. And yes, this happens every time you rebuild the directory with DW,
http://discussions.apple.com/thread.jspa?messageID=10290097 -
My laptop have refused to start it will just show windows boot manager on the screen,
My laptop have refused to start up, it will just show windows boot manager on the screen,and me to choose an operating system to start or press tab to select a tool but when I tryed all those things none of it will respond
Thanks also Star 1. I have gone the route you suggest also but with the same results as I explained to the hatter. I have about a dozen die-hard Windows friends and they have been trying to help me also. We have tried everything and I have read a several pages on how to do it but nothing looks like what they are saying it does. When in Vista, Vista says it is the default SU OS. When in XP, XP says it is the default SU OS. So there is nothing to change. Only the Windows Boot Manager (which is really not a manager but a boot selector) shows Vista as default and XP next. I've learned again what I already knew. Windows is a conglomerated piece of crap that is hard as heck to use.
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Help please HP pavillion DV6 boot manager missing : (
Hi
I had a trojen I quarantined it but my laptop was not running ok I kept losing connection it was slow etc ... anyway I decided to do a full system recovery I done disc one that run ok ..then entered the 2 nd disc waited over 30 minutes it didnt run I took it out ...maybe i shouldnt of .. now I cant do anything with my laptop it sais boot manger is missing... I ran the memory tests ,hard disc tests they were all ok .... I got to the boot device bit ....it sais ebable i done that on all ... out of desperaration it kept saying if theres an exclamation mark ..it wont save ???? i cant fet rid ofthe exclamation marks .... when i i save after hiting F10 as advised ?? nothing works im just letf with my lovely laptop with a black screen saying boot manager is missing is there anyone out that can help /advise me please I just thought i would able to dowload a boot device manager from the HP webite ...no luck i cant find it or see any options for this ..please help if you can Im not technically clever so if you can help please explain in simple terms what i can do .... my laptop is HP pavilion DV6 the one im using now is my husbands
Thanks Kerry-anne I googled my problem & i hit F12 on restart now i have key system disable in a blue box with a key & a few numbers hi-lited in it please try & help me thanks im really desperate ...Im disabled & really need my laptop its my life line its the world from outside my bedroom : (Hi Kerry
This seems to be an issue with software try to reinstall Operating system using the disc in case if still does not work please call HP Technical support and order a new set off Recovery disc as the second disc is not working this will resolve your issue.
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath
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