Centos installing grub problems suspect gpt problem

grub> root (hd0,0)
root (hd0,0)
 Filesystem type is ext2fs, partition type 0xfd
grub> setup (hd0)
setup (hd0)


But if you do:
root (hd1,0)
setup (hd1)

it does work, I think hd0/sda had a GPT partition that was not removed properly (what I did was just dd bs=512 count=1 the partition table from another drive since the partition table should be identical).

 Checking if "/boot/grub/stage1" exists... no
 Checking if "/grub/stage1" exists... yes
 Checking if "/grub/stage2" exists... yes
 Checking if "/grub/e2fs_stage1_5" exists... yes
 Running "embed /grub/e2fs_stage1_5 (hd1)"...  27 sectors are embedded.
succeeded
 Running "install /grub/stage1 (hd1) (hd1)1+27 p (hd1,0)/grub/stage2 /grub/grub.conf"... succeeded
Done.

==============
Checking for gpt with gdisk:

GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
typing 'q' if you don't want to convert your MBR partitions
to GPT format!
***************************************************************


===========

gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
typing 'q' if you don't want to convert your MBR partitions
to GPT format!
***************************************************************


Command (? for help): p
Disk /dev/sda: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 4DE51E1D-DC93-43EC-B670-44A0A9FEE114
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 8-sector boundaries
Total free space is 5099 sectors (2.5 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              63         2120575   1.0 GiB     FD00  Linux RAID
   2         2120576        44066295   20.0 GiB    FD00  Linux RAID
   3        44066296       976768064   444.7 GiB   FD00  Linux RAID

Command (? for help): g
b    back up GPT data to a file
c    change a partition's name
d    delete a partition
i    show detailed information on a partition
l    list known partition types
n    add a new partition
o    create a new empty GUID partition table (GPT)
p    print the partition table
q    quit without saving changes
r    recovery and transformation options (experts only)
s    sort partitions
t    change a partition's type code
v    verify disk
w    write table to disk and exit
x    extra functionality (experts only)
?    print this menu

Command (? for help): r

Recovery/transformation command (? for help): p
Disk /dev/sda: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 4DE51E1D-DC93-43EC-B670-44A0A9FEE114
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 8-sector boundaries
Total free space is 5099 sectors (2.5 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              63         2120575   1.0 GiB     FD00  Linux RAID
   2         2120576        44066295   20.0 GiB    FD00  Linux RAID
   3        44066296       976768064   444.7 GiB   FD00  Linux RAID

Recovery/transformation command (? for help): ?
b    use backup GPT header (rebuilding main)
c    load backup partition table from disk (rebuilding main)
d    use main GPT header (rebuilding backup)
e    load main partition table from disk (rebuilding backup)
f    load MBR and build fresh GPT from it
g    convert GPT into MBR and exit
h    make hybrid MBR
i    show detailed information on a partition
l    load partition data from a backup file
m    return to main menu
o    print protective MBR data
p    print the partition table
q    quit without saving changes
t    transform BSD disklabel partition
v    verify disk
w    write table to disk and exit
x    extra functionality (experts only)
?    print this menu

Recovery/transformation command (? for help): g

MBR command (? for help): g
a    toggle the active/boot flag
c    recompute all CHS values
l    set partition as logical
o    omit partition
p    print the MBR partition table
q    quit without saving changes
r    set partition as primary
s    sort MBR partitions
t    change partition type code
w    write the MBR partition table to disk and exit

MBR command (? for help): g
a    toggle the active/boot flag
c    recompute all CHS values
l    set partition as logical
o    omit partition
p    print the MBR partition table
q    quit without saving changes
r    set partition as primary
s    sort MBR partitions
t    change partition type code
w    write the MBR partition table to disk and exit

MBR command (? for help): w

Converted 3 partitions. Finalize and exit? (Y/N): y
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
GPT data structures destroyed! You may now partition the disk using fdisk or
other utilities.

===========
I can even do
root (hd1,0)
setup (hd0) and it will work.........but not hd0,0 even though both are in the same RAID array on the same partition


Tags:

centos, installing, grub, gpt, problemgrub, hd, filesystem, ext, fs, partition, xfd, sda, dd, bs, identical, quot, fs_stage, _, embed, sectors, embedded, succeeded, install, conf, gdisk, fdisk, scan, mbr, bsd, apm, invalid, valid, converting, format, potentially, destructive, typing, convert, partitions, dev, disk, gib, sector, bytes, identifier, guid, dc, ec, fee, entries, usable, aligned, boundaries, mib, fd, linux, raid, delete, detailed, transformation, experts, verify, functionality, header, rebuilding, hybrid, transform, disklabel, toggle, active, recompute, chs, omit, primary, converted, finalize, kernel, reboot, structures, utilities, array,

Latest Articles

  • How to allow SSH root user access in Linux/Debian/Mint/RHEL/Ubuntu/CentOS
  • Ansible Tutorial - Playbook How To Install From Scratch and Deploy LAMP + Wordpress on Remote Server
  • Ceph Install Errors on Proxmox / How To Fix Solution
  • Proxmox Update Error https://enterprise.proxmox.com/debian/pve bullseye InRelease 401 Unauthorized [IP: 144.217.225.162 443]
  • QEMU/KVM How to Hot-add A Virtual Disk .raw/.qcow2 via QEMU Monitor Commands
  • Proxmox How To Enable Ceph Distributed Storage Cluster with OSD and Pools
  • pulseaudio issue on QEMU/KVM guest VM when microphone is replugged/unplugged pulseaudio: pa_threaded_mainloop_lock failed pulseaudio: Reason: Invalid argument
  • Ubuntu Linux Mint - Volume Control Stopped Working
  • Proxmox Services Won't Start Failed to start The Proxmox VE cluster filesystem. Proxmox VE firewall. PVE Status Daemon. Proxmox VE scheduler. PVE Cluster HA Resource Manager Daemon. PVE Local HA Resource Manager Daemon.
  • Proxmox Guide FAQ / Errors / Howto
  • Virtualbox Vbox Issue Cannot Enable Nested Virtualization Button is Grayed/Greyed Out and Unclickable HowTo Solution
  • Virtualbox VBOX Howto Port Forward To Guests
  • Linux Ubuntu Debian Centos Mint - How To Check if Intel VT-x or AMD-V Hardware Virtualization is Enabled?
  • Linux Howto Zip Multiple Files and Directories
  • Windows Cannot Format USB drive Device Media is Write Protected Error Solution
  • Linux Mint 20 cannot install snapd missing solution
  • Virtualbox VBOX How To Install Guest-Utils/GuestUtils so drag and drop and clipboard works Ubuntu Mint Debian Linux
  • How to install Kubernetes with microk8s and deploy apps on Debian/Mint/Ubuntu Linux
  • vi how to delete everything to the end of the line or the rest of the line from the cursor
  • Cisco Howto Configure Console Port/Terminal/Comm Server with Async Cable Setup