Pedro_C.
February 2nd, 2015, 12:26 PM
Hello everybody,
The other day I was doing I don't know what exactly, but the conclusion was that I accidentally deleted the EFI partition, and when I tried to boot I obtained the message "Reboot and select proper boot device". After reading some entries in internet I've tried to repair it using Boot-Repair utility, but I am not able to understand the problem, so I've decided to ask for help... (of course, I've read some entries in the forums like http://ubuntuforums.org/showthread.php?t=2244208, but without improving my knowledge of the problem).
Using a live usb with Boot-Repair I've made the following
1.- I ran 'Recommended repair' and obtained the message "GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again." Then I went to GParted, selected partition sda1 (512 MB, which was the EFI partition) and I formatted it as FAT32 with flag bios_grub. But, this didn't solve the problem.
2.- Before trying anything else I generated a BootInfo summary (http://paste.ubuntu.com/10012145/)
3.- Then, someone here told me that the problem was the lack of GRUB in sda1, then I used "Boot-Repair-->Advanced Options-->GRUB location" to install GRUB in sda1. After doing that I've obtained the following summary (http://paste.ubuntu.com/10012789/)
4.- Now, my computer is unable to boot, and even I don't get the message "Reboot and select proper boot device". As you can see in the summaries I have two other partitions, sda2 with the OS (Kubuntu), and sdb with /home/pedro (i.e. my personal data). So, I didn't lose data, but I would like to not reinstall the all the system, as I need several days to tune it ...
I would appreciate very much any help, thank you in advance for your time,
Pedro.
The other day I was doing I don't know what exactly, but the conclusion was that I accidentally deleted the EFI partition, and when I tried to boot I obtained the message "Reboot and select proper boot device". After reading some entries in internet I've tried to repair it using Boot-Repair utility, but I am not able to understand the problem, so I've decided to ask for help... (of course, I've read some entries in the forums like http://ubuntuforums.org/showthread.php?t=2244208, but without improving my knowledge of the problem).
Using a live usb with Boot-Repair I've made the following
1.- I ran 'Recommended repair' and obtained the message "GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again." Then I went to GParted, selected partition sda1 (512 MB, which was the EFI partition) and I formatted it as FAT32 with flag bios_grub. But, this didn't solve the problem.
2.- Before trying anything else I generated a BootInfo summary (http://paste.ubuntu.com/10012145/)
3.- Then, someone here told me that the problem was the lack of GRUB in sda1, then I used "Boot-Repair-->Advanced Options-->GRUB location" to install GRUB in sda1. After doing that I've obtained the following summary (http://paste.ubuntu.com/10012789/)
4.- Now, my computer is unable to boot, and even I don't get the message "Reboot and select proper boot device". As you can see in the summaries I have two other partitions, sda2 with the OS (Kubuntu), and sdb with /home/pedro (i.e. my personal data). So, I didn't lose data, but I would like to not reinstall the all the system, as I need several days to tune it ...
I would appreciate very much any help, thank you in advance for your time,
Pedro.