47
votes
Accepted
Could `rm -rf / --no-preserve-root` mess up the bios?
One rare possibility could be you triggered some of the infamous UEFI bugs, that already killed some series of Samsung and Lenovo notebooks.
It works like this: UEFI specs propose a non volatile ...
- 1,158
27
votes
Could `rm -rf / --no-preserve-root` mess up the bios?
No, it is not possible to destroy the BIOS (legacy or UEFI) in this manner with that command.
Even if you somewhat managed to destroy the UEFI partition, core BIOS files will not be affected, as they ...
- 45.5k
14
votes
USB drive not detected in Intel EFI shell
Fantastic.
I had this problem with a Fedora 22 Live image on an USB stick created as per UEFI boot of USB sticks using
livecd-iso-to-disk --efi --format --reset-mbr Fedora-Live-Xfce-x86_64-22-3.iso /...
- 940
12
votes
Dell PowerEdge: powersaving BIOS settings differences
The following Dell Whitepaper goes in depth on the differences between the different power profiles:
http://en.community.dell.com/techcenter/extras/m/white_papers/20248740 (page 20-36)
Below you can ...
- 295
10
votes
Accepted
Resetting factory defaults - HP Proliant DL360 gen8
I don't know how the USB controller ended up disabled on your system... I'd love to know what happened right before you asked this question...
But you do have a couple of options to recover. Since ...
- 196k
10
votes
Could `rm -rf / --no-preserve-root` mess up the bios?
While fun, rm -rf / can only break a havoc inside its own little jail -- and that is the partition(s) it is given. It cannot mess up disk MBR, nor it cannot magically destroy your computer.
Something ...
- 31.7k
8
votes
Could `rm -rf / --no-preserve-root` mess up the bios?
The other answers seem to agree that wiping the BIOS is probably not your problem, so here's another thought:
My computer, when switched into UEFI mode, skips the BIOS screen completely. No ...
- 181
8
votes
Accepted
HP Proliant ml350p g8 not booting after installing new CPUs
There's a special firmware update needed to allow the use of E5-2600V2 CPUs in systems originally equipped with V1 CPUs.
You need to download it to a USB key and boot the server from it in order to ...
- 196k
8
votes
Accepted
ProLiant Gen8 Microsoft BIOS records 8GB put POST only shows 4GB
You have mixed registered and unregistered. That won't work. All the ram needs to be registered or unregistered.
- 23k
7
votes
How to make my HP server boot faster?
Use kexec to reboot your server. This skips the pre-boot procedures entirely, and reboots into a Linux kernel at the end of the Linux shutdown process, rather than resetting the hardware and going to ...
- 241k
7
votes
Accepted
Turning off HyperThread by BIOS or kernel?
Well, the first obvious difference is that noht doesn't actually do anything on modern Linux systems. This kernel boot option is long obsolete, and was replaced with maxcpus=.
Setting maxcpus=m, ...
- 241k
7
votes
Accepted
Supermicro X9SCD won't enter BIOS (error code: AB)
Based on user discussions in a thread by Webjunkie in the ServeTheHome Forums it appears that there is a date dependent bug that causes this behavior on some of the Supermicro X9 boards:
It seems ...
- 34.4k
6
votes
Accepted
Update all firmware on HP DL380 G5 server
The firmware for that server is located on HP's website.
Here's where to get it.
Don't assume that a system this old has any recent firmware updates.
Here's your BIOS download.
Here's your ILO ...
- 196k
5
votes
Dell Poweredge 1850 - stuck on - Press <Ctrl><M> to Run Configuration Utility screen :(
Unplug it, unrack it, and throw it away.
It's so old that Dell won't support it.
You should replace it with a more modern R320 or similar, which would also be way more power efficient.
- 27.5k
5
votes
Dell poweredge 2950 and 1950 will not see hard drive
Several issues actually:
This is a drive which is not supported in this machine. Never tested with it, the firmware mismatches and so on. You can ignore this, since the server is long since EOL ...
- 18.6k
5
votes
Accepted
When to use X2Apic Mode?
Here's some info on what APIC is.
When enabled, processor x2APIC support helps operating systems run more efficiently on high core count configurations and optimizes interrupt distribution in ...
- 323
5
votes
Accepted
Can upgrading the BIOS bork the filesystem?
A bad BIOS update can in principle break your system in just about any way. But a broken file system is a highly unlikely outcome of that. The most likely outcome of a bad BIOS upgrade is that the ...
- 30.2k
4
votes
Accepted
Esxi hypervisor install: uefi or bios?
The general rule is if you don't have a reason to switch back to BIOS, stick with UEFI.
- 476
4
votes
Accepted
Convert From UEFI to Legacy BIOS in Windows Server 2012
This is, in fact, possible:
Boot the system using a linux live cd with gdisk on it. I used a CentOS 7 Core installation and used recovery mode. I did this by editing the grub boot options and ...
- 193
4
votes
Accepted
How to upgrade BIOS on Dell PowerEdge T20 server?
Indeed, I find it rather non-standard, but you may install this executable file directly from the Boot Manager.
Visit Dell Support.
Enter your Service Tag.
Navigate to Drivers and Download.
Expand ...
- 487
4
votes
GRUB hangs before menu, after a HDD upgrade. How to debug?
I'm going to answer the third part of my question, about a procedure to install GRUB with debugging enabled. I'd still appreciate informed suggestions about where the trouble may lie, or strategies ...
- 1,098
4
votes
What is ME region in BIOS
BIOS ME stands for "BIOS Management Engine". You want to have that option unchecked when upgrading your BIOS.
You haven't specified what board you have, but for my X9SCL-F, I had a problem when ...
- 323
4
votes
What is wrong with that Dell PowerEdge?
What else could be done before replacing the entire motherboard?
You have bad hardware or a bad BIOS flash. If after replacing all of the other components the only thing left is the motherboard, it's ...
- 23k
3
votes
Accepted
How to detect Bios Rootkits on a server mainboard?
Well, the obvious answer would be to compare the BIOS you have with the BIOS released by the manufacturer... of course, that only works if the BIOS released by your manufacturer doesn't contain a ...
- 53.6k
3
votes
HP Proliant Gen8 boot failure after bios upgrade and processor upgrade
There's a special firmware update needed to allow the use of E5-2600V2 CPUs in systems originally equipped with V1 CPUs.
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03911173&...
- 31
3
votes
How to make my HP server boot faster?
My preferred solution to the horribly slow G8 bios boot time is to install the the free VMware vSphere Hypervisor instead of running the OS directly on the server.
http://www.vmware.com/go/get-free-...
- 217
3
votes
Change BIOS settings on Supermicro system via a script
Supermicro uses AMI Aptio BIOS.
AMI provides SCE utility (scelnx for Linux) to change BIOS setting by scripts.
Firstly you need to dump current BIOS settings to know settings UUIDs:
scelnx /b /o /s /...
3
votes
Accepted
How to find mainboards that supports Self Encrypting Device (SED) in BIOS?
SED means self encryption disk, where the "self" part means that the encryption mechanism is entirely embedded in the disk's controller/firmware.
The motherboard can supply an ATA PASSWORD to seed ...
- 45.5k
3
votes
SuperMicro server won't boot after power cycle
Do you get a POST signal/beep code on boot? Modern motherboards often have a small LCD to display the code. Documentation for the motherboard should list the possible codes.
If no -> time to start ...
- 8,769
3
votes
SuperMicro server won't boot after power cycle
Call Supermicro support!
Oh wait... do they provide this type of support? NOPE.
So troubleshoot by breaking things down into pieces. Do you have a KVM in the chain? If so, remove it (here's why).
...
- 196k
Only top scored, non community-wiki answers of a minimum length are eligible