Re: [gentoo-user] installed Gentoo on SSD - no bootable device

[Joseph <syscon780@gmail.com>]

On 09/05/14 20:20, J. Roeleveld wrote:
>On 5 September 2014 19:55:49 CEST, Joseph <syscon780@gmail.com> wrote:
>>On 09/05/14 14:11, Neil Bothwick wrote:
>>>On Fri, 5 Sep 2014 07:06:27 -0600, Joseph wrote:
>>>
>>>> I made a typo my Bios is from around 2008 so it can not be EFI.
>>>> So I need a "BIOS boot partition" which in my case is "/dev/sda1"
>>but I
>>>> don't need the /dev/sda2 - this is my 128M boot partition. My
>>layout:
>>>>
>>>> Device           Start          End   Size Type
>>>> /dev/sda1         2048         6143     2M BIOS boot partition
>>>> /dev/sda2         6144       268287   128M Linux filesystem
>>>> /dev/sda3       268288      4462591     2G Linux swap
>>>> /dev/sda4      4462592    937703054   445G Linux filesystem
>>>>
>>>> Can I combine sda1 and sda2?  I mean delete both and create bigger
>>sda1
>>>> make it a BIOS boot partition and format it as ext2; install grub2
>>on
>>>> it.
>>>
>>>No you can't, read the previous posts. The BIOS boot partition is not
>>the
>>>same as /boot, it is a special partition needed for MBR compatibility
>>and
>>>nothing to do with the OS files. The partition layout you have is
>>>suitable, don't mess with it except possibly to create a separate
>>/home.
>>>sda1 and 2 are fine as they are, don't break them.
>>
>>It seems to me my BIOS can not read GPT partition so what are my
>>alternatives?
>>I think I will have to format the SSD in MBR
>>
>>How to use fidsk to partition HD in MBR; by default fdisk is going to
>>GPT.
>
>fdisk can only do MBR partitioning.
>gdisk does GPT partitioning and can add MBR compatibility.
>
>With a disk of less them 2TB I wouldn't bother with GPT if you don't have an EFI mainboard. Do yourself a favour and partition the SSD as if it were a spinning disk.

I'm trying to rescue my installation but it doesn't work.
I deleted sda1 and sda2 and converted them to sda1 Microsoft basic data 
Installed legacy grub on it but it doesn't work.

Do I need to make sda1 bootable "*" 

fdisk -l /dev/sda

Disk /dev/sda: 447.1 GiB, 480103981056 bytes, 937703088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 37C37937-6310-4B04-93A6-05CD7792EF16

Device           Start          End   Size Type
/dev/sda1         2048       268287   130M Microsoft basic data
/dev/sda3       268288      4462591     2G Linux swap
/dev/sda4      4462592    937703054   445G Linux filesystem

-- 
Joseph