I had a drive fail, and it is the one that had grub on it. It had parts of two RAID-6 partitions, too. So I bought a new drive and added partitions on it to replace the failed RAID-6 parts. That was still booting OK from the failed drive, but then I updated the kernel, and I decided to also install a new grub on the new drive.
That seemed to go OK until I tried to reboot. I landed in grub rescue. Fortunately I have several computers, so I can look up documentation, etc. without my main desktop functioning. Somewhere I found that grub rescue has only a few commands, none of them "help" or a list of commands, and no TAB-expansions. Well, they seem to be ls, set, unset and insmod. Supposedly, running insmod normal, then normal, will get back to the fuller set of commands with help, but that's where it gets the "outside of partition" error, it seems. I can ls the /boot/grub/i386-pc/ directory, where normal.mod is, so I would think grub rescue could find and read normal.mod, too, but, I guess not. So, set debug=all helped a little, expanding the message from just something like (I'd have to keep trying to reboot to get it verbatim) read or write bad, to the specific size of the partition (in decimal, around 175 million 512-byte blocks) and the sector it is trying to read (read.c:461) (in hexadecimal), around 10 million. But 10 million hex really is larger than 175 million decimal. So maybe my BIOS has some limitation on how deep it can read into this 2 TB drive, or maybe the drive having hardware sectors of 4096 bytes replacing one with 512 confuses grub. But the old drive with the failures gets the same problem. It's gentoo, grub2 (I could look up the version once it's running again), 64-bit (although grub seems not to really notice 32- vs 64-bit, or the kernel, so I'm not sure it's just smart or really dumb), and, like I say, the / partition is RAID-6, including /boot. I'm going to try making a non-RAID /boot, maybe later I'll try making it RAID-1, to see if that helps. Any advise? Thanks. -- Open WebMail Project (http://openwebmail.org) _______________________________________________ Grub-devel mailing list [email protected] https://lists.gnu.org/mailman/listinfo/grub-devel
