no UEFI Firmware Settings/secure boot option on Asus x550cc
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no UEFI Firmware Settings/secure boot option on Asus x550cc
I want to dual-boot Linux Mint with Windows 8 on a new Asus x550c, but following the usual procedure I couldn't find anyway of disabling secure boot. What should I do? Should just install Linux Mint knowing that it's "boot mode" is set to "legacy" by default?
BTW when i prompt the bot menu, i see 2 options to boot from my USB drive: one line with my USB drive and the other is preceded by the word UEFI: name of my USB drive.
which one should i choose?
BTW when i prompt the bot menu, i see 2 options to boot from my USB drive: one line with my USB drive and the other is preceded by the word UEFI: name of my USB drive.
which one should i choose?
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 3 times in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Re: no UEFI Firmware Settings or secure boot on Asus x550c
BTW My PC boots from Linux MInt USB drive in booth ways. The only difference is that I get a grub menu before startup when I choose the second boot option (UEFI: name of my USB drive)
Re: no UEFI Firmware Settings/secure boot option on Asus x55
help plz before i put a foot through this brick!! thanks
Re: no UEFI Firmware Settings/secure boot option on Asus x55
this is my hardwatre details:
Code: Select all
$ sudo lshw
mint
description: Notebook
product: X550CC (ASUS-NotebookSKU)
vendor: ASUSTeK COMPUTER INC.
version: 1.0
serial: DCN0WU005355493
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: boot=normal chassis=notebook family=X sku=ASUS-NotebookSKU uuid=A4271708-C8FE-42AD-86B5-BCEE7BC82B6E
*-core
description: Motherboard
product: X550CC
vendor: ASUSTeK COMPUTER INC.
physical id: 0
version: 1.0
serial: BSN12345678901234567
slot: MIDDLE
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: X550CC.217
date: 10/16/2013
size: 64KiB
capacity: 6080KiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb smartbattery biosbootspecification uefi
*-cache:0
description: L2 cache
physical id: 8
slot: CPU Internal L2
size: 512KiB
capacity: 512KiB
capabilities: internal write-through unified
*-cache:1
description: L1 cache
physical id: 9
slot: CPU Internal L1
size: 128KiB
capacity: 128KiB
capabilities: internal write-through data
*-cache:2
description: L3 cache
physical id: a
slot: CPU Internal L3
size: 3MiB
capacity: 3MiB
capabilities: internal write-back unified
*-memory
description: System Memory
physical id: b
slot: System board or motherboard
size: 4GiB
*-bank:0
description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns) [empty]
product: [Empty]
vendor: 0000
physical id: 0
serial: 00000000
slot: ChannelA-DIMM0
width: 8 bits
clock: 1600MHz (0.6ns)
*-bank:1
description: DIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 1
serial: [Empty]
slot: ChannelA-DIMM1
*-bank:2
description: SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)
product: ASU16D3LS1KBG/4G
vendor: Kingston
physical id: 2
serial: EB20FC87
slot: ChannelB-DIMM0
size: 4GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-bank:3
description: DIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 3
serial: [Empty]
slot: ChannelB-DIMM1
*-cpu
description: CPU
product: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz
vendor: Intel Corp.
physical id: c
bus info: cpu@0
version: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz
slot: SOCKET 0
size: 1300MHz
capacity: 3800MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx f16c lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq
configuration: cores=2 enabledcores=2 threads=4
*-pci
description: Host bridge
product: 3rd Gen Core processor DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 09
width: 32 bits
clock: 33MHz
*-pci:0
description: PCI bridge
product: Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port
vendor: Intel Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: 09
width: 32 bits
clock: 33MHz
capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:40 ioport:e000(size=4096) memory:f6000000-f70fffff ioport:e0000000(size=301989888)
*-display
description: 3D controller
product: GF117M [GeForce 610M/710M / GT 620M/625M/630M/720M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom
configuration: driver=nouveau latency=0
resources: irq:16 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f7000000-f707ffff
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:45 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64)
*-usb:0
description: USB controller
product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:41 memory:f7a00000-f7a0ffff
*-communication
description: Communication controller
product: 7 Series/C210 Series Chipset Family MEI Controller #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:46 memory:f7a1a000-f7a1a00f
*-usb:1
description: USB controller
product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:16 memory:f7a18000-f7a183ff
*-multimedia
description: Audio device
product: 7 Series/C210 Series Chipset Family High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:47 memory:f7a10000-f7a13fff
*-pci:1
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:16
*-pci:2
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 2
vendor: Intel Corporation
physical id: 1c.1
bus info: pci@0000:00:1c.1
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:17 memory:f7900000-f79fffff
*-network UNCLAIMED
description: Network controller
product: MEDIATEK Corp.
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:03:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:f7900000-f79fffff
*-pci:3
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 4
vendor: Intel Corporation
physical id: 1c.3
bus info: pci@0000:00:1c.3
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:19 ioport:d000(size=4096) memory:f7800000-f78fffff ioport:f2100000(size=1048576)
*-generic
description: Unassigned class
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
configuration: driver=rtsx_pci latency=0
resources: irq:43 memory:f7800000-f780ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.2
bus info: pci@0000:04:00.2
logical name: eth0
version: 0a
serial: bc:ee:7b:c8:2b:6e
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8411-1_0.0.3 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:44 ioport:d000(size=256) memory:f2104000-f2104fff memory:f2100000-f2103fff
*-usb:2
description: USB controller
product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:23 memory:f7a17000-f7a173ff
*-isa
description: ISA bridge
product: HM76 Express Chipset LPC Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: driver=lpc_ich latency=0
resources: irq:0
*-storage
description: SATA controller
product: 7 Series Chipset Family 6-port SATA Controller [AHCI mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 04
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:42 ioport:f0b0(size=8) ioport:f0a0(size=4) ioport:f090(size=8) ioport:f080(size=4) ioport:f060(size=32) memory:f7a16000-f7a167ff
*-serial UNCLAIMED
description: SMBus
product: 7 Series/C210 Series Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 04
width: 64 bits
clock: 33MHz
configuration: latency=0
resources: memory:f7a15000-f7a150ff ioport:f040(size=32)
*-scsi:0
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: HGST HTS545050A7
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: GG2O
serial: TMA55CPY1DAA1M
size: 465GiB (500GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 sectorsize=4096 signature=741d2acd
*-volume:0
description: Windows NTFS volume
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
version: 3.1
serial: b632-e160
size: 348MiB
capacity: 350MiB
capabilities: primary bootable ntfs initialized
configuration: clustersize=4096 created=2014-03-06 15:17:33 filesystem=ntfs label=Réservé au système modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true
*-volume:1
description: Windows NTFS volume
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
version: 3.1
serial: 9e3a2a2d-60a8-294b-9952-4a3f810e4f0e
size: 465GiB
capacity: 465GiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2014-03-06 15:17:35 filesystem=ntfs state=clean
*-scsi:1
physical id: 2
logical name: scsi2
capabilities: emulated
*-cdrom
description: DVD-RAM writer
product: DVD A DA8A5SH
vendor: Slimtype
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/cdrom
logical name: /dev/sr0
version: 1AA3
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=nodisc
*-scsi:2
physical id: 3
bus info: usb@3:1
logical name: scsi6
capabilities: emulated scsi-host
configuration: driver=usb-storage
*-disk
description: SCSI Disk
physical id: 0.0.0
bus info: scsi@6:0.0.0
logical name: /dev/sdb
size: 3824MiB (4009MB)
capabilities: partitioned partitioned:dos
configuration: sectorsize=512 signature=00051712
*-volume
description: Windows FAT volume
vendor: SYSLINUX
physical id: 1
bus info: scsi@6:0.0.0,1
logical name: /dev/sdb1
logical name: /cdrom
version: FAT32
serial: 602a-32d6
size: 3822MiB
capacity: 3823MiB
capabilities: primary bootable fat initialized
configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro state=mounted
mint@mint ~ $
Re: no UEFI Firmware Settings/secure boot option on Asus x55
Here is some good information dealing with UEFI-based computers and Linux installations to them. Highly recommend you read these if UEFI is new for you, especially the first link.Zorba wrote:I want to dual-boot Linux Mint with Windows 8 on a new Asus x550c, but following the usual procedure I couldn't find anyway of disabling secure boot. What should I do? Should just install Linux Mint knowing that it's "boot mode" is set to "legacy" by default?
http://www.rodsbooks.com/linux-uefi/
https://help.ubuntu.com/community/UEFI
There should be some way to turn off secure boot in the UEFI Settings(Startup) Menu. Do a search for your motherboard's user manual to find that out. If there really is no way to turn it off, then I guess you don't have a choice but to try the install with it on. I believe Ubuntu install can work with it on, but not sure about Mint.
Basic steps before you install Mint (Some of these I'm sure you already know and probably have already done):
- * Backup anything important and make rescue/recovery disks for Win 8 if you haven't already done so.
* Turn off "Secure Boot" and "Fast Startup" for Win 8.
* Make sure Win 8 is fully shutdown before attempting Mint install. (See here: http://www.thewindowsclub.com/force-ful ... -windows-8.)
* If Windows partitions cover entire disk, use Windows disk manager to shrink main partition creating space for Mint installation. (Defragment that partition before shrinking.)
* DO NOT create partitions for Linux using Windows disk manager.
* Determine whether you have 32-bit or 64-bit Win 8 and whether it was installed in UEFI-mode or BIOS/Legacy/CSM-mode. (See here for description on determining that: http://www.rodsbooks.com/refind/bootmode.html
* If 32-bit Windows, then must have been installed in BIOS/Legacy/CSM-mode with MBR partitioning on the drive.
* If 64-bit Windows, can be either UEFI-mode with GPT partitions, or BIOS-mode with MBR partitions. You need to know which and install Mint using the same mode.
Good luck!
Re: no UEFI Firmware Settings/secure boot option on Asus x55
you have got some really good and detailed advice above;
I saw this review on Linux Today a few days ago
http://www.zdnet.com/hands-on-my-new-as ... 000027284/
a frequent reviewer had installed several distros on linux on an ASUS computer running windows 8; and whilst the review does not offer the excellent detailed advice given in the posts above, you may find something of interest or relevance to you
I saw this review on Linux Today a few days ago
http://www.zdnet.com/hands-on-my-new-as ... 000027284/
a frequent reviewer had installed several distros on linux on an ASUS computer running windows 8; and whilst the review does not offer the excellent detailed advice given in the posts above, you may find something of interest or relevance to you
Re: no UEFI Firmware Settings/secure boot option on Asus x55
asus didn't have this option. the first thing you need to do is check whether if the gpt runs on hybrid or protected mbr. if it runs on protected mbr you can try to install mint on it. if it run on hybrid mbr then it will be better if you are not install mint on it.I want to dual-boot Linux Mint with Windows 8 on a new Asus x550c, but following the usual procedure I couldn't find anyway of disabling secure boot. What should I do? Should just install Linux Mint knowing that it's "boot mode" is set to "legacy" by default?
you can choose the first option.BTW when i prompt the bot menu, i see 2 options to boot from my USB drive: one line with my USB drive and the other is preceded by the word UEFI: name of my USB drive.
which one should i choose?
Re: no UEFI Firmware Settings/secure boot option on Asus x55
PCs running Windows will not normally use a hybrid MBR. Those are normally used only on Macs that dual-boot OS X and some other OS (usually Windows, but sometimes Linux or something else). As explained on the linked-to page, hybrid MBRs are an ugly and dangerous hack.kurotsugi wrote:asus didn't have this option. the first thing you need to do is check whether if the gpt runs on hybrid or protected mbr. if it runs on protected mbr you can try to install mint on it. if it run on hybrid mbr then it will be better if you are not install mint on it.I want to dual-boot Linux Mint with Windows 8 on a new Asus x550c, but following the usual procedure I couldn't find anyway of disabling secure boot. What should I do? Should just install Linux Mint knowing that it's "boot mode" is set to "legacy" by default?
I strongly disagree with this advice, albeit with the caveat that my disagreement is based on the assumption that the computer is currently booting in EFI/UEFI mode. You do not want to install Linux in BIOS/CSM/legacy mode (which is what the described first boot option will do) if Windows is installed in EFI/UEFI mode. Although it's often possible to get an OS installed in one mode to coexist with another OS installed in the other mode, it's usually both better and easier to ensure that both your OSes are installed in the same mode.you can choose the first option.BTW when i prompt the bot menu, i see 2 options to boot from my USB drive: one line with my USB drive and the other is preceded by the word UEFI: name of my USB drive.
which one should i choose?
Re: no UEFI Firmware Settings/secure boot option on Asus x55
I have an asus, x451ca, and it comes with hybrid gpt out of the box. I know that hybrid gpt could ruin our system if we want a dualboot system. that's why I told him to not install any other OS if his x550 also comes with hybrid gpt.
Re: no UEFI Firmware Settings/secure boot option on Asus x55
This is the first I've heard of any computer that ships from the manufacturer with a hybrid MBR (assuming that's what you meant by "hybrid gpt"; if not, please elaborate, since "hybrid gpt" is not a term with which I'm familiar). Hybrid MBRs actually violate the GPT specification, and they're useful mainly on Macs that dual-boot OS X and Windows. Even Apple doesn't ship its Macs with hybrid MBRs; Apple leaves creation of hybrid MBRs to its Boot Camp software. I don't know why a laptop that ships with Windows (according to the ASUS site on the product) would need a hybrid MBR. If you really got a laptop with such a configuration, my initial guess is that it was an open-box unit and the previous owner attempted a Hackintosh installation on it, then returned it in a modified state.kurotsugi wrote:I have an asus, x451ca, and it comes with hybrid gpt out of the box. I know that hybrid gpt could ruin our system if we want a dualboot system. that's why I told him to not install any other OS if his x550 also comes with hybrid gpt.
Re: no UEFI Firmware Settings/secure boot option on Asus x55
GPT have two mode for the mother boot record. hybrid mode and protected mode. for certain reason some vendor prefer to shipped their product with hybrid ones. my laptop is one of them and I know it's not the only one.
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Re: no UEFI Firmware Settings/secure boot option on Asus x55
Zorba, are you sure that Windows was installed in UEFI mode?
I didn't see the evidence of that in your hardware specs. Maybe I just missed it.
I didn't see the evidence of that in your hardware specs. Maybe I just missed it.
Mint 18.2 Cinnamon, Quad core AMD A8-3870 with Radeon HD Graphics 6550D, 8GB DDR3, Ralink RT2561/RT61 802.11g PCI
Linux Linx 2018
Linux Linx 2018
Re: no UEFI Firmware Settings/secure boot option on Asus x55
I'm the author of GPT fdisk (gdisk) and the maintainer of rEFInd, so I watch GPT and EFI issues pretty closely. For the benefit of clearer communication, here are some brief definitions:kurotsugi wrote:GPT have two mode for the mother boot record. hybrid mode and protected mode. for certain reason some vendor prefer to shipped their product with hybrid ones. my laptop is one of them and I know it's not the only one.
- Master Boot Record (MBR) -- The first sector of a hard disk. On a BIOS-based computer, the MBR typically holds both a BIOS-mode boot loader and a partition table. The MBR boot loader is used only by BIOS, not by EFI.
- GUID Partition Table (GPT) -- A partition table intended to replace the MBR partition table. The GPT includes five sub-components: a protective MBR (see below), a primary/main GPT header, a primary/main partition table, a secondary/backup partition table, and a secondary/backup GPT header.
- Protective MBR -- A GPT component that is an MBR partition table that defines a single partition of type 0xEE that spans the entire disk (or up to 2^32 sectors, on disks larger than that). The purpose of the protective MBR is to keep GPT-unaware tools from messing with the disk. The idea is that such tools will see this partition and think that the disk is already fully in use.
- Hybrid MBR -- An illegal variant on the protective MBR in which the type-0xEE partition is shrunk and between one and three GPT partitions are duplicated in the MBR. Importantly, when confronted with a hybrid MBR disk, Windows treats it as an MBR disk (ignoring the GPT data), whereas OS X and Linux both treat it as a GPT disk (ignoring the MBR entries). This is important for dual-booting Windows on Macs, but it also makes a hybrid MBR worse than useless on a UEFI-based PC running Windows 8, since Windows refuses to boot in UEFI mode from an MBR disk (including a hybrid MBR disk).
- Motherboard -- The main board in a computer, which holds the CPU and firmware and into which other components are plugged.
- Protected mode -- A CPU operating mode in x86 and x86-64 CPUs. Protected mode helps implement features like virtual memory, paging, and multi-tasking. It has nothing to do with partitioning.
If so, the first statement is sort-of correct, in that a hybrid MBR is a variant of the GPT's standard protective MBR that is recognized by many tools; however, a hybrid MBR is a clear violation of the GPT specification. Thus, a disk that uses a hybrid MBR technically does not use GPT. If the computer ships with Windows installed as the sole OS, it's also a completely brain-dead configuration, because Windows will see the disk as an MBR disk, making the GPT data worse than useless. Such a configuration can easily lead to lost data. Any manufacturer that ships a Windows-only PC with a hybrid MBR is incompetent.My interpretation of what you meant wrote:The GPT's master boot record can be either hybrid or protective. for certain reasons some vendors prefer to ship their products with hybrid MBRs. my laptop is one of them and I know it's not the only one.
I have yet to hear of any confirmed cases of manufacturers shipping computers with hybrid MBRs. I have heard of one or two cases of people getting computers with hybrid MBRs, and another two or three cases in which people have gotten computers with MBR disks that have leftover GPT data. (This second case differs from a hybrid MBR in that there is no type-0xEE partition in the MBR. This situation can arise if a GPT disk is repartitioned with a GPT-unaware tool.) These cases have all been "open-box specials" that have had previous owners. It's entirely possible that such a computer was first bought by somebody who created a hybrid MBR setup or who converted the disk from GPT to MBR, probably because they were following Hackintosh installation instructions or because they re-installed Windows in BIOS mode, but who returned the computer to the store without restoring it to its original state. This does not reflect the manufacturer's configuration. If you believe that you've received a factory-fresh computer with a hybrid MBR, please provide more details, such as view of the disk as you received it with gdisk and fdisk and information on what OS(es) came pre-installed on the computer.
Re: no UEFI Firmware Settings/secure boot option on Asus x55
deeply sorry but I can't give the detail what gdisk said. honestly, I already forgot it :3
when I found that my laptop have hybrid mbr I quickly convert it to mbr. it was about 2 month ago. as for the other information. it's an asus a451ca comes with:
- 500gb HD with three partition.
- DOS
since it has no usable OS I deleted all the partition, create new partitions (100MB for window's boot, 30gb for window's, 300gb for shared data, 20gb for linux system and 30gb for /home ). after that I installed win7 on it then a LMDE later. everything seems fine but I notice something is strange. all of the partition is primary partition so that since I have 5 primary partition I assume that I have gpt. on other hand my LMDE strangely could boot out of the box (LMDE didnt support gpt until UP8, it should not boot until I install grub-efi). upon my curiosity I use gdisk to check it and turns out that it's a hybrid mbr. after that I convert it to mbr and reinstall my LMDE.
when I found that my laptop have hybrid mbr I quickly convert it to mbr. it was about 2 month ago. as for the other information. it's an asus a451ca comes with:
- 500gb HD with three partition.
- DOS
since it has no usable OS I deleted all the partition, create new partitions (100MB for window's boot, 30gb for window's, 300gb for shared data, 20gb for linux system and 30gb for /home ). after that I installed win7 on it then a LMDE later. everything seems fine but I notice something is strange. all of the partition is primary partition so that since I have 5 primary partition I assume that I have gpt. on other hand my LMDE strangely could boot out of the box (LMDE didnt support gpt until UP8, it should not boot until I install grub-efi). upon my curiosity I use gdisk to check it and turns out that it's a hybrid mbr. after that I convert it to mbr and reinstall my LMDE.