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