[SOLVED] "`/boot/grub' is not readable by GRUB on boot" & "cannot find a device for /"
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From this post you don't have a file system in /dev/sda2. How can that work? Also, that partition is probably too small to be usable.
Good catch. I never did notice sda2 was too small for the boot partition. The op never mentioned in this thread anything about not being able to mount sda2 just a reference to errors in post 15.
Last edited by colorpurple21859; 01-01-2015 at 05:30 AM.
The op never mentioned in this thread anything about not being able to mount sda2 just a reference to errors in post 15.
Yes. And probably the OP doesn't realize that a partition type is not a file system type, if I may infer this from that quote:
Quote:
Originally Posted by Geremia
No, I'm using BIOS, not EFI.That produces an error, saying something about NTFS and how it couldn't be mounted. What filesystem type is the BIOS boot partition (of type EF02)?
@Geremia: for GUID partition tables, aka GPT, EF02 refers to "BIOS boot partition", but:
To use it including to mount it, you need to put a filesystem in it.
It could be too small to be usable.
Last edited by Didier Spaier; 01-01-2015 at 06:01 AM.
From this post you don't have a file system in /dev/sda2. How can that work? Also, that partition is probably too small to be usable.
If the filesystem is too small, how could GRUB even install once? Is GRUB really installed somewhere else, and I'm just imagining it's on sda2?
I have another machine partitioned in the same way, except the BIOS boot partition is over 30 MB. Yet I have the same problems there as here when trying to re-install GRUB.
The boot partition needs to be 200-500mb in size and formated. The slackware setup only offers to format the root partition. Any boot partitions created will need to be formated before running setup.
This is your other problem. The free space before 2048 on gpt shouldn't be used for a partition. This is left empty to allow for the use of grub in bios mode(none efi). You will also most lilely have to use the --force option when installing grub2 in i386-pc(none efi) on a gpt disk.
Last edited by colorpurple21859; 01-02-2015 at 07:18 AM.
Maybe these extra mount commands will make a difference
Code:
mount /dev/sda1 /mnt
mount --bind /dev /mnt/dev
mount --bind /dev/pts /mnt/dev/pts
mount --bind /proc /mnt/proc
mount --bind /sys /mnt/sys
Code:
chroot /mnt
That fixed it! Thank you!
Are all those mount commands necessary, though? I know the chroot wasn't necessary (it certainly would be were I booted off a recovery flash drive).
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