[SOLVED] Loss of EFI and BIOS

polpak · 09-22-2023, 04:01 PM

after reboot:

Code:

xxxxxxx@7400K-hxi52:~$ sudo efibootmgr -v
[sudo] password for root: 
BootCurrent: 0003
Timeout: 1 seconds
BootOrder: 0003,0000,0004,0005,0006,0007,0001
Boot0000* ubuntu	HD(13,GPT,beebc37f-c6ca-4233-b049-66b291cd10c0,0xe720d800,0x1bfb000)/File(\EFI\ubuntu\shimx64.efi)
Boot0001  Linux	HD(1,GPT,2a8a1a0d-9b9a-44f2-9086-496a9975027f,0x800,0x4000000)/File(\EFI\linux\grub.efi)
Boot0002* Hard Drive 	BBS(HD,,0x0)AMGOAMNO........m.W.D.C. .W.D.1.0.E.Z.E.X.-.0.0.M.F.C.A.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.6.C.1.Y.S.L.U.9.E.6......AMBOAMNO........m.S.T.4.0.0.0.D.M.0.0.4.-.2.C.V.1.0.4....................A.........................>..Gd-.;.A..MQ..L. . . . . . . . . . . . .F.W.4.N.7.6.W.Q......AMBOAMNO........m.W.D.C. .W.D.2.0.E.Z.R.Z.-.0.0.Z.5.H.B.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.4.C.5.M.A.R.X.7.5.Y......AMBO
Boot0003* ubuntu	HD(8,GPT,3e0f8638-9859-4ccf-9d58-766c1c07e087,0x1c9c00800,0x800b68f)/File(\EFI\Ubuntu\grubx64.efi)
Boot0004* UEFI OS	HD(8,GPT,3e0f8638-9859-4ccf-9d58-766c1c07e087,0x1c9c00800,0x800b68f)/File(\EFI\BOOT\BOOTX64.EFI)
Boot0005* ubuntu	HD(13,GPT,beebc37f-c6ca-4233-b049-66b291cd10c0,0xe720d800,0x1bfb000)/File(\EFI\Ubuntu\grubx64.efi)
Boot0006* UEFI OS	HD(13,GPT,beebc37f-c6ca-4233-b049-66b291cd10c0,0xe720d800,0x1bfb000)/File(\EFI\BOOT\BOOTX64.EFI)
Boot0007* Hard Drive 	BBS(HD,,0x0)AMGOAMNO........m.W.D.C. .W.D.1.0.E.Z.E.X.-.0.0.M.F.C.A.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.6.C.1.Y.S.L.U.9.E.6......AMBOAMNO........m.S.T.4.0.0.0.D.M.0.0.4.-.2.C.V.1.0.4....................A.........................>..Gd-.;.A..MQ..L. . . . . . . . . . . . .F.W.4.N.7.6.W.Q......AMBOAMNO........m.W.D.C. .W.D.2.0.E.Z.R.Z.-.0.0.Z.5.H.B.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.4.C.5.M.A.R.X.7.5.Y......AMBO
xxxxxxx@7400K-hxi52:~$

Self has learnt a lot, however am NOT so technical (my long term brain injuries requires extra caution), so cautious before changing things, particularly with BIOS boot partition and the EFI partition.

My three hard drives each had openSUSE and Ubuntu partitions, usually disconnect them, until I do back-ups on their partitions.

Self may have lost track of which needed Legacy.

.

mrmazda · 09-22-2023, 04:05 PM

What exactly is it that you have booted now? Which operating system did you install last, and where? What is output from tree /boot/efi and mount | grep sd?

polpak · 09-22-2023, 04:53 PM

Code:

xxxxxxx@7400K-hxi52:~> tree /boot/efi 
/boot/efi
└── EFI
    ├── boot
    │** ├── bootx64.efi
    │** ├── fallback.efi
    │** ├── fbx64.efi
    │** ├── mmx64.efi
    │** └── MokManager.efi
    ├── opensuse
    │** ├── boot.csv
    │** ├── grub.cfg
    │** ├── grub.efi
    │** ├── grubx64.efi
    │** ├── MokManager.efi
    │** └── shim.efi
    └── ubuntu
        ├── BOOTX64.CSV
        ├── grub.cfg
        ├── grubx64.efi
        ├── mmx64.efi
        └── shimx64.efi

4 directories, 16 files
xxxxxxx@7400K-hxi52:~>

Code:

xxxxxxx@7400K-hxi52:~> sudo tree /boot/efi 
/boot/efi
└── EFI
    ├── boot
    │** ├── bootx64.efi
    │** ├── fallback.efi
    │** ├── fbx64.efi
    │** ├── mmx64.efi
    │** └── MokManager.efi
    ├── opensuse
    │** ├── boot.csv
    │** ├── grub.cfg
    │** ├── grub.efi
    │** ├── grubx64.efi
    │** ├── MokManager.efi
    │** └── shim.efi
    └── ubuntu
        ├── BOOTX64.CSV
        ├── grub.cfg
        ├── grubx64.efi
        ├── mmx64.efi
        └── shimx64.efi

4 directories, 16 files
xxxxxxx@7400K-hxi52:~> mount  | grep sd?
xxxxxxx@7400K-hxi52:~> sudo mount  | grep sd?
xxxxxxx@7400K-hxi52:~> df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        4.0M     0  4.0M   0% /dev
tmpfs           7.3G   17M  7.3G   1% /dev/shm
tmpfs           3.0G  9.9M  3.0G   1% /run
tmpfs           4.0M     0  4.0M   0% /sys/fs/cgroup
/dev/sdc6        89G   52G   33G  62% /
/dev/sdc8        65G   11M   64G   1% /boot/efi
tmpfs           1.5G   96K  1.5G   1% /run/user/1000
xxxxxxx@7400K-hxi52:~>

.

polpak · 09-22-2023, 05:08 PM

This is my HardDrive missing EFI/BIOS

Code:

xxxxxxx@7400K-hxi52:~> sudo fdisk -l /dev/sda
[sudo] password for root: 
Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD10EZEX-00M
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: F250BDA4-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Device         Start        End    Sectors   Size Type
/dev/sda1       2048   67110911   67108864    32G Linux swap
/dev/sda2   67110912  335546367  268435456   128G Linux filesystem
/dev/sda4  335546368  603981823  268435456   128G Linux home
/dev/sda7  640686080  855433215  214747136 102.4G Linux root (x86-64)
/dev/sda9  855433216 1953525134 1098091919 523.6G Linux filesystem
xxxxxxx@7400K-hxi52:~>

Will shutdown to disconnect HardDrive sdb WD20EZRZ-00Z

Hope that reduces confusions... though it may change the sd?

.

mrmazda · 09-22-2023, 05:15 PM

"?" was the end mark of a question sentence, not part of a command sequence:

Code:

# inxi -S
System:
  Host: e6400 Kernel: 5.14.21-150500.55.19-default arch: x86_64 bits: 64
    Console: pty pts/1 Distro: openSUSE Leap 15.5
# mount | grep sd
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
/dev/sda7 on / type ext4 (rw,noatime,stripe=4)
/dev/sda9 on /disks/stw type ext4 (rw,noatime,stripe=4)
/dev/sda11 on /disks/deb type ext4 (rw,noatime,stripe=4)
/dev/sda8 on /disks/s154 type ext4 (rw,noatime)
/dev/sda12 on /home type ext4 (rw,noatime,data=ordered)
/dev/sda6 on /pub type ext4 (rw,noatime,data=ordered)
/dev/sda3 on /disks/boot type ext2 (rw,noatime)
/dev/sda5 on /usr/local type ext4 (rw,noatime,data=ordered)

polpak · 09-22-2023, 05:37 PM

Code:

xxxxxxx@7400K-hxi52:~> inxi -S
System:
  Host: 7400K-hxi52 Kernel: 5.14.21-150500.55.19-default arch: x86_64 bits: 64
    Desktop: GNOME v: 41.9 Distro: openSUSE Leap 15.5
xxxxxxx@7400K-hxi52:~> mount | grep sd
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
/dev/sdb6 on / type ext4 (rw,relatime)
/dev/sdb8 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=100)
xxxxxxx@7400K-hxi52:~>

Code:

xxxxxxx@7400K-hxi52:~> sudo fdisk -l /dev/sda
Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD10EZEX-00M
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: F250BDA4-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Device         Start        End    Sectors   Size Type
/dev/sda1       2048   67110911   67108864    32G Linux swap
/dev/sda2   67110912  335546367  268435456   128G Linux filesystem
/dev/sda4  335546368  603981823  268435456   128G Linux home
/dev/sda7  640686080  855433215  214747136 102.4G Linux root (x86-64)
/dev/sda9  855433216 1953525134 1098091919 523.6G Linux filesystem
xxxxxxx@7400K-hxi52:~>

Code:

xxxxxxx@7400K-hxi52:~> sudo fdisk -l /dev/sdb
Disk /dev/sdb: 3.64 TiB, 4000787030016 bytes, 7814037168 sectors
Disk model: ST4000DM004-2CV1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: D7974D2A-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Device          Start        End    Sectors  Size Type
/dev/sdb1        2048  209717247  209715200  100G Linux root (x86-64)
/dev/sdb3   209717248 2357200895 2147483648    1T Linux filesystem
/dev/sdb4  2357200896 4504684543 2147483648    1T Linux filesystem
/dev/sdb5  4504684544 6652168191 2147483648    1T Linux filesystem
/dev/sdb6  6652168192 6840911871  188743680   90G Linux root (x86-64)
/dev/sdb7  6840911872 7679772671  838860800  400G Linux home
/dev/sdb8  7679772672 7814037134  134264463   64G EFI System
xxxxxxx@7400K-hxi52:~>

,

polpak · 09-22-2023, 05:45 PM

Code:

xxxxxxx@7400K-hxi52:~> sudo efibootmgr -o 3,0
Invalid BootOrder order entry value3,0
                                       ^
efibootmgr: entry 0000 does not exist
xxxxxxx@7400K-hxi52:~>

Code:

xxxxxxx@7400K-hxi52:~> sudo efibootmgr -v
BootCurrent: 0003
Timeout: 1 seconds
BootOrder: 0003,0004,0007,0001
Boot0001  Linux	HD(1,GPT,2a8a1a0d-9b9a-44f2-9086-496a9975027f,0x800,0x4000000)/File(\EFI\linux\grub.efi)
Boot0002* Hard Drive 	BBS(HD,,0x0)AMGOAMNO........m.W.D.C. .W.D.1.0.E.Z.E.X.-.0.0.M.F.C.A.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.6.C.1.Y.S.L.U.9.E.6......AMBOAMNO........m.S.T.4.0.0.0.D.M.0.0.4.-.2.C.V.1.0.4....................A.........................>..Gd-.;.A..MQ..L. . . . . . . . . . . . .F.W.4.N.7.6.W.Q......AMBOAMNO........m.W.D.C. .W.D.2.0.E.Z.R.Z.-.0.0.Z.5.H.B.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.4.C.5.M.A.R.X.7.5.Y......AMBO
Boot0003* ubuntu	HD(8,GPT,3e0f8638-9859-4ccf-9d58-766c1c07e087,0x1c9c00800,0x800b68f)/File(\EFI\Ubuntu\grubx64.efi)
Boot0004* UEFI OS	HD(8,GPT,3e0f8638-9859-4ccf-9d58-766c1c07e087,0x1c9c00800,0x800b68f)/File(\EFI\BOOT\BOOTX64.EFI)
Boot0007* Hard Drive 	BBS(HD,,0x0)AMGOAMNO........m.W.D.C. .W.D.1.0.E.Z.E.X.-.0.0.M.F.C.A.0....................A.........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.C.W.6.C.1.Y.S.L.U.9.E.6......AMBOAMNO........m.S.T.4.0.0.0.D.M.0.0.4.-.2.C.V.1.0.4....................A.........................>..Gd-.;.A..MQ..L. . . . . . . . . . . . .F.W.4.N.7.6.W.Q......AMBO
xxxxxxx@7400K-hxi52:~>

Will reboot now...

.

mrmazda · 09-22-2023, 05:49 PM

Quote:

Originally Posted by polpak

QUESTION: How can we get BIOS or EFI back on ?

It seems what this may be about is you had an ESP partition on the disk that has partitions 1,2,4,7,9, and now has a modest amount of freespace between 4 and 7. Is this the case? If yes, are you expecting to be able to be able to recover this partition? If so, I suggest the better plan is to either create it anew in that freespace, or add an EFI boot entry using efibootmgr to one of the ESP partitions on the other two disks.

polpak · 09-22-2023, 06:24 PM

Yes it was running fine until I accidently deleted the EFI, self was trying to figure out how to repair the EFI when our village power died for a while...

Am not sure how "to either create it anew in that freespace, or add an EFI boot entry using efibootmgr to one of the ESP partitions on the other two disks"

Self needs be elsewhere now for an hour our two :-(

Really appreciate all the help given here...

.

mrmazda · 09-22-2023, 06:28 PM

How to you "accidentally" delete a partition? What were you trying to do at the time?

You're causing thread confusion by removing one of the disks. You should keep all connected until this is resolved, unless specifically suggested otherwise.

How exactly are you now booting openSUSE? There should be a line containing opensuse in your output from efibootmgr. You should be able to add openSUSE to an ESP using YaST2 bootloader from your main DE menus YaST selection. If you make any edit at all in it, on exit it will redo everything related to booting. If you have any problem what to change, simply change the timeout value from whatever it is to something else.

polpak · 09-22-2023, 11:21 PM

I deleted the BIOS, then received phonecalls which I had to deal with, when back to computer realized had wrongly deleted the EFI, looking for how to recover or reset it my town suffered a major power failure... it took a while for the power to come back on :-O

When power back on started the computer it showed grub this

Click image for larger version

Name: 20230917_162110.jpg
Views: 10
Size: 264.6 KB
ID: 41733

As not know what to do there... shut computer down, then started searching for information on what to do...

Am using openSUSE 15.5 which shows this: /dev/sda6
Also shows /dev/sda8 /boot/efi

.

mrmazda · 09-23-2023, 12:04 AM

Quote:

Originally Posted by polpak

I deleted the BIOS

There is no such thing as deleting a BIOS. The BIOS is part of your motherboard. What it looks like you may have done is to have deleted an ESP partition from the disk with 5 partitions numbered 1,2,4,7,9. It has no ESP partition, but your other two disks each have one. Only one is needed per computer.

Quote:

When power back on started the computer it showed grub this (attachment)

What happens now? How are you booting openSUSE? Is there a Grub menu with only Ubuntu entries if you don't boot from USB? Do you get a Grub menu with openSUSE and Ubuntu menu selections?

Quote:

Am using openSUSE 15.5 which shows this: /dev/sda6
Also shows /dev/sda8 /boot/efi

We already figured that out. What we can't see evidence of is how you get 15.5 booted, because efibootmgr shows only ubuntu and generic entries - none for openSUSE. The only evidence of openSUSE presence in any of your commands' output came from tree and inxi.

colorpurple21859 · 09-23-2023, 08:52 AM

Code:

grub> set pager=1
grub>set

post the contents of following lines

cmdpath=
prefix=
root=

and the output of:

grub> ls

colorpurple21859 · 09-23-2023, 01:01 PM

If all you did was delete the efi partition you may be able to recover the partition with fdisk:

Code:

fdisk /dev/sda
n
Partition number (3,5-6,8,10-128, default 3): 6
First sector (????????-?????, default ?????):637536256
Last sector, +/-sectors or +/-size{K,M,G,T,P} (???????, default ?????):639633407

Partition #6 contains a vfat signature.

Do you want to remove the signature? [Y]es/[N]o: N
t
Partition number (???? default ??): 6
Partition type or alias (type L to list all): 1
p
w

Notes:
1. Change sda to sdb if the drive is now sdb
2. Before pressing w check the ouput of the p command to make sure the the sectors are correct for the efi partition compared to the original drive setup. If not Q to quit instead of w to write and start over.
3. There may still be problems because uuid/guid will be different and needs to be changed back to the original

polpak · 09-23-2023, 11:24 PM

mrmazda:

Thanks for your comment with the link included: https://en.wikipedia.org/wiki/EFI_system_partition

Extract:

" GRUB 2 and elilo serve as conventional, full-fledged standalone UEFI boot loaders for Linux. Once loaded by a UEFI firmware, they both can access and boot kernel images from all devices, partitions and file systems they support, without being limited to the EFI system partition. "

This explains how am able to boot into openSUSE and Ubuntu. :-)

.