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Goingtobecrazy
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Joined: 13 Feb 2015
Posts: 14

PostPosted: Fri Feb 13, 2015 4:25 pm    Post subject: can you delet this topic? thx! Reply with quote

can you delet this topic? thx!

Last edited by Goingtobecrazy on Sat Feb 14, 2015 10:40 pm; edited 2 times in total
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Roman_Gruber
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Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Fri Feb 13, 2015 8:12 pm    Post subject: Reply with quote

think as a computer

first bios

did you enable the drive as bootable in your bios ?

than mbr of the harddrive

is grub in the mbr?

does grub exists in the /boot partition

do the files exists in the boot partition ....

is everything specified in the grub config.
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 43178
Location: 56N 3W

PostPosted: Fri Feb 13, 2015 9:02 pm    Post subject: Reply with quote

Goingtobecrazy,

Welcome to Gentoo.

Mixing BIOS and GPT can be tricky.
The problem is that when you make a GPT disk lable you also get a free MSDOS disk label that describes the entire drive, or the first 2Gib, if the drive is bigger than that.
During booting, the BIOS (not EUFI) will look in the MSDOS disk label for the bootable flag but its not set.
You can set it in the GPT disk label if you like but the BIOS cannot see that, so it won't work.

Use
Code:
fdisk -c=dos /dev/sda
to set the bootable flag on the MSDOS partition.
The is the only operation you should carry out on the MSDOS partition.

Reinstalling is a bad habit you picked up from other operating systems. It will not fix your Gentoo, is just offers the opportunity to make a different mistake.
Its actually very hard to break gentoo so badly you need to reinstall.
It follows that Gentoo installs never fail - they complete with varing degrees of success :)

You can even change the hardware under your Gentoo without a reinstall.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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