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7

not able to create boot partition in grub after resizing ubuntu partition

rated 0 times [ 7] [ 0] / answers: 1 / hits: 4021 / 2 Years ago, mon, february 28, 2022, 3:45:44

I booted from the live cd so that I could increase disk space and swap space of my ubuntu partition. Earlier I have windows partition as well but I deleted it and gave space to my ubuntu partition. When I booted after this I got the dreaded "no partition found" grub error. After some research I found out that I needed a boot partition in order to boot. However, now when I create a new partition (for boot), I can not manage "flags" on it. So, I'm not able to create a partition with "boot" flag. Please see the screenshot below.

What should I do? My intention was to set boot flag on the unallocatted space of 1.85 GB. enter image description here

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2 Years ago

answered 2 Years ago irripri · Accepted Answer

Ok, i had the exact same problem at least 9-10 times each time i formatted my /home partition and the windows partition later.What i do every time is this:

mount the ubuntu live cd and try ubuntu

open terminal

sudo fdisk -l (that gives a list of partition)

sudo mount /dev/sdanumber_0f_disk_you_have_installed_the_ubuntu /mnt
for example sudo mount /dev/sda2 /mnt

lets say number_0f_disk_you_have_installed_the_ubuntu=X

sudo mount /dev/sdaX /mnt/boot

sudo mount --bind /dev /mnt/dev/

sudo chroot /mnt

grub-install /dev/sda

sudo umount /mnt/dev

sudo umount /mnt

sudo reboot