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Groups > linux.debian.user > #189629
| From | David Christensen <dpchrist@holgerdanske.com> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: BIOS Can Not Find Disk |
| Date | 2017-12-07 07:00 +0100 |
| Message-ID | <uTXnY-253-5@gated-at.bofh.it> (permalink) |
| References | (6 earlier) <uSRuh-G8-3@gated-at.bofh.it> <uT0QW-6xY-9@gated-at.bofh.it> <uTanf-4a6-7@gated-at.bofh.it> <uTeqR-6Ja-5@gated-at.bofh.it> <uTuFk-Fw-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 12/05/17 15:18, Pascal Hambourg wrote:
> Le 05/12/2017 à 06:55, David Christensen a écrit :
>> 4. The firmware finds the first GPT partition and file system, which
>> look "right" for EFI boot images.
>
> No.
>
>> 5. The firmware reads this file system and finds only one file, which
>> it loads and runs (starting GRUB):
>>
>> /EFI/debian/grubx64.efi
>
> No.
>
>> (If there were more than one choice, my guess is that I'd have to
>> pre-select one in the CMOS setup, or perhaps have to select one from a
>> menu at the end of POST?)
>
> No.
>
> First, a compliant UEFI firmware should look up its EFI boot variables
> and try each boot entry Boot* in the order defined in the BootOrder
> variable. The text description associated to theses entries is usually
> displayed in the EFI boot menu. If no entry is defined or works, then
> the firmware should look for a partition with the "EFI system partition"
> type GUID and look for an /EFI/Boot/bootx64.efi file (default path used
> on removable devices).
>
> GRUB can be installed in such a path with
>
> grub-install --removable
>
>> 6. GRUB finds the second GPT partition and file system, which looks
>> "right" for GRUB, reads the file system, locates the appropriate files
>> (notably /boot/grub/grub.cfg), and boots the system.
>
> When /boot/grub is in a plain partition on the same drive as GRUB's core
> image (grubx64.efi here), the partition number is hardcoded in the core
> image.
>
>> Again -- are there any other commands I should run that readers might
>> find interesting?
>
> You can print the EFI boot variables with
>
> efibootmgr -v
root@debian:~# efibootmgr -v
Timeout: 1 seconds
BootOrder: 0001,0000,000B,000D,000E
Boot0000* Windows Boot Manager
HD(1,GPT,b1ed9b97-3b16-4838-8b46-3978e905fdd9,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................
Boot0001* debian
HD(1,GPT,c89f1523-fff6-45d1-abbe-b2eaaa0216e0,0x800,0x100000)/File(\EFI\debian\grubx64.efi)
Boot000B* CD/DVD Drive BBS(CDROM,,0x0)P3: HL-DT-ST BD-RE WH14NS40 .
Boot000D* Network Card BBS(Network,,0x0)IBA GE Slot 00C8 v1395.
Boot000E* Hard Drive BBS(HD,,0x0)P0: INTEL SSDSC2CW060A3.
Boot0000 -- there is no Windows drive in this machine.
Boot0001 -- corresponds to the first GPT partition on the SSD that is in
the machine:
root@debian:~# blkid /dev/sda1
/dev/sda1: UUID="8F67-ADA4" TYPE="vfat"
PARTUUID="c89f1523-fff6-45d1-abbe-b2eaaa0216e0"
root@debian:~# mount /dev/sda1 /mnt
root@debian:~# ls -l /mnt/EFI/debian/grubx64.efi
-rwx------ 1 root root 121856 Dec 4 20:23 /mnt/EFI/debian/grubx64.efi
Boot000B -- corresponds to my optical drive.
Boot000D -- corresponds to my network interface.
Boot000E -- corresponds to an SSD (with Debian Stretch BIOS/MBR) that
was in the machine in the past, but was not installed when I installed
Debian UEFI/GPT and currently is not installed.
STFW I see:
http://www.uefi.org/
http://www.uefi.org/sites/default/files/resources/UEFI%20Spec%202_6.pdf
2,706 pages -- that's going to take a while to read...
David
Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-01 20:00 +0100
Re: BIOS Can Not Find Disk "Thomas Schmitt" <scdbackup@gmx.net> - 2017-12-01 21:00 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-02 19:30 +0100
Re: BIOS Can Not Find Disk "Thomas Schmitt" <scdbackup@gmx.net> - 2017-12-02 20:30 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-02 03:00 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-02 05:10 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-02 20:40 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-03 04:50 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-04 00:40 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-04 06:20 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-04 06:30 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-04 15:40 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-05 01:50 +0100
Re: BIOS Can Not Find Disk David Wright <deblis@lionunicorn.co.uk> - 2017-12-04 16:30 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-05 02:40 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-05 07:00 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-06 00:20 +0100
Re: BIOS Can Not Find Disk David Christensen <dpchrist@holgerdanske.com> - 2017-12-07 07:00 +0100
Re: BIOS Can Not Find Disk David Wright <deblis@lionunicorn.co.uk> - 2017-12-05 23:30 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-05 22:50 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-04 03:40 +0100
Re: BIOS Can Not Find Disk Michael Lange <klappnase@freenet.de> - 2017-12-02 22:40 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-03 00:20 +0100
Re: BIOS Can Not Find Disk Michael Lange <klappnase@freenet.de> - 2017-12-03 00:40 +0100
Re: BIOS Can Not Find Disk deloptes <deloptes@gmail.com> - 2017-12-03 05:50 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-03 11:00 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-03 12:50 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-03 18:40 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-03 19:10 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-03 20:40 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-03 20:20 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2017-12-03 22:00 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-03 23:00 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-03 23:50 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-04 00:50 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-05 00:50 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-05 03:40 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-06 23:20 +0100
Re: BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-07 00:10 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-07 21:50 +0100
Re: (OT) BIOS Can Not Find Disk Felix Miata <mrmazda@earthlink.net> - 2017-12-08 00:10 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-12-03 11:10 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2018-02-21 04:10 +0100
Re: BIOS Can Not Find Disk Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-21 23:20 +0100
Re: BIOS Can Not Find Disk Dan Norton <dnorton@mindspring.com> - 2018-02-22 02:20 +0100
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