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matart
n00b
Joined: 30 Mar 2015
Posts: 5
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 Posted: Thu Aug 13, 2015 5:15 pm Post subject: Unable to boot after accidental grub2-install |
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Hello,
I was having trouble entering my bios originally so I cleared the CMOS. I had trouble getting into the system but the grub menu appeared so I assumed that my grub config was to blame. I decided to rebuild it using the command:
| Code: | | grub2-mkconfig -o /boot/grub/grub.cfg |
What I accidentally did was run:
| Code: | | grub2-install /dev/sdb |
This is the right dev. I have a smaller harddrive for backups as sda.
My partition list is:
| Code: | $ fdisk -l
Disk /dev/loop0: 181.7 MiB, 190513152 bytes, 372096 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
Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 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: 84E775F8-2785-41CD-9965-B14D0D792866
Device Start End Sectors Size Type
/dev/sda1 2048 3907027119 3907025072 1.8T Microsoft basic data
Disk /dev/sdb: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: C9108AA6-DE56-43BE-AD64-0D033D25F771
Device Start End Sectors Size Type
/dev/sdb1 2048 6143 4096 2M BIOS boot
/dev/sdb2 6144 7814035119 7814028976 3.7T EFI System
Disk /dev/sdh: 7.3 GiB, 7803174912 bytes, 15240576 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: dos
Disk identifier: 0x000bab4d
Device Boot Start End Sectors Size Id Type
/dev/sdh1 * 2048 15239167 15237120 7.3G b W95 FAT32
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Now when my system gets to grub it jumps right to the console and I do not see the grub menu at all.
things I have tried:
- rebuilding kernel
- reinstalling grub
- remaking the grub.cfg
Has anyone had some similar issue? or any idea how to solve this?
Please let me know if any information is needed. |
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Roman_Gruber
Advocate
Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria
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| Posted: Thu Aug 13, 2015 6:06 pm Post subject: |
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you could utilize the grub2 command line, which is build in and boot your setup. assuming you have a glue how your box was set up.
i assume you jst need to chainload your /boot partition and thats it... |
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