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Joseph <syscon780@×××××.com> [15-01-31 19:32]: |
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> On 01/31/15 11:59, Dale wrote: |
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> >Meino.Cramer@×××.de wrote: |
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> >>Joseph <syscon780@×××××.com> [15-01-31 18:12]: |
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> >>>After recent upgrade my computer doesn't want to boot. I did not do |
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> >>>anything with grub or kernel. |
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> >>>I get a bios flash and next is message: |
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> >>> |
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> >>>Loading operating system ... |
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> >>>GRUB loading stage2 |
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> >>> |
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> >>>and computer goes back reboot cycle, flash bios and the same massage |
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> >>>is |
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> >>>displayed. |
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> >>>What went wrong during update? |
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> >>> |
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> >>>-- |
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> >>>Joseph |
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> >>> |
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> >>Hi Joseph, |
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> >> |
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> >>may be only a accidental coincidence... |
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> >>One thing I can think of is an empty bios coin cell. |
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> |
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> What is an empty BIOS coin cell? |
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> |
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> |
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> >> |
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> >>If this is not the cause, check whether the stage2 grub |
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> >>got deleted. |
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> |
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> How do I check if stage2 grub was deleted? |
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> Thanks for your help |
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> > |
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> >OP, if it were me, I'd chroot in, re-emerge grub, reinstall grub to |
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> >the |
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> >drive and then try to reboot. It doesn't seem to me that it is the OS |
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> >itself or the kernel since it doesn't seem to get that far either. |
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> >It's |
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> >either a BIOS or a grub issue. I'm thinking along the same lines of |
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> >Meino myself. Since chrooting in is a bit of a pain, I'd cover the |
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> >whole field while in it. |
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> > |
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> >Don't forget, you can use the -K option to install from binaries if |
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> >you |
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> >save them. That may save a little bit of time. |
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> > |
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> >Hope that helps. |
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> |
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> I boot strap from a CD and /boot and grup.conf looks normal the way I |
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> install it. |
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> |
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> ... |
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> title Gentoo Current Kernel |
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> root (hd0,0) |
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> kernel /boot/kernel-current root=/dev/sda3 vga=normal |
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> |
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> -- |
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> Joseph |
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> |
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|
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Hi, |
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|
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(please read this completly before doing anything) |
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|
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on the motherboard of your PC there is a Real Time Clock (RTC), which |
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keeps time and date correct while your PC is turned off. This RTC |
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needs power...only a little bit but more then nothing. For that there |
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is a battery holder (oh damn, I fear, this term is "german English... |
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;) on the motherboard, which can easily be identified, because it |
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is about of the size of two Euro coin and an silvery "coin" is |
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in there (visible from the outside). The similarity of the shape |
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of a coin and and a coin cell gave the latter its name. |
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|
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BUT! |
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Dont pull that out before you got a new one! |
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Most often these cells are lithium batteries, which name starts |
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with CR...... . On my motherboard there is a CR2032. But this |
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should be mentioned in the manual of your mitherboard (and if that |
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get lost you will find a pdf of that on the net somewhere). |
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|
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If you got a new cell, shutdown the computer, remove the mains plug |
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from the back and switch the PC on again (no joke). This will empty |
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any capacitor in the mains adapter and on the board. |
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|
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Touch the metal case of the PC (or if it is plastic touch the outer |
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shell of an USB jack (**NOT** the inside), where you can easily reach |
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it (in most cases on the back of the PC instead of the front). |
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This will discharge any static electricity. Otherwise grub and the |
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coin cell become a minor problem... ;) |
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|
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Check the manual how to remove the BIOS coin cell. Do it carefully but |
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do it not excessive slow. |
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Insert the new battery (remove it from the package before you remove |
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the old cell) as described in the manual. |
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|
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If you are quick enough chance are given that all settings of the BIOS |
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will survive the short no-power situation. |
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|
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Boot the PC again. If you didnt configure ntp for your PC and the |
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time/date of the PC didn't survive the short power fail of the coin cell swap, |
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set the date by hand, emerge net-misc/ntp, configure it and run it by |
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hand to set time/date correctly. |
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|
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If the PC does not boot: Install grub as Dale mentioned. A missing |
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stage2 bootloader may be the reason, why grub hangs while looking for |
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it. If the problem went away after installing grub (and with it a new |
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stage2 bootlaoder) the missing stage2 bootloader is the first |
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candidate for being the reason of the problem. |
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|
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Good luck! |
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Best regards, |
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Meino |