Hi,
tested again.
Acer laptop Aspire E15 E5-571G EFI system
64GB USB 3.0 flash medium
Loaded F25 Alpha release Workstation
dnf update kernel -> got Kernel x86_64 4.8.0-0 rc8.git.0.1.fc25
made -according to the production process- a successful F25 build on the 64GB flash
medium
Tried to boot -> again Dracut error with the warnings:
- dev/fedora/root does not exist
- dev/fedora/swap does not exist
- dev/mapper/fedora-root does not exist
When I looked with F24 onto the F25 build, most partitions did not exist, i.e. EFI
partition was empty, also GRUB2 was nearly empty,
the size of the F25 build was was about 1,1GB.
Kind regards
-----Ursprüngliche Mitteilung-----
Von: Chris Murphy <lists(a)colorremedies.com>
An: For testing and quality assurance of Fedora releases
<test(a)lists.fedoraproject.org>
Verschickt: Fr, 30 Sept 2016 8:35 pm
Betreff: Re: Fedora on usb connected media
On Fri, Sep 30, 2016 at 11:07 AM, Richard Ryniker <ryniker(a)alum.mit.edu> wrote:>
Works for me. I used a Samsung 940X laptop and a Sandisk 80GB USB3> external
SSD.>> This is a UEFI machine, and I installed using manual partitioning to>
re-use partitions on the external device, which contained an old Fedora> 23 system. My
purpose here was to preserve an encrypted /home partition.> /boot, /boot/efi, /root and
a swap partition were reformatted by the> installer for the F25 system.>> In
order to boot from the external drive, I must use the EFI boot loader> - press F10
during start to display a list of boot devices, then select> the SanDisk USB drive.Just
a guess, but I think that when the USB stick isn't present, thefirmware is removing
what it considers to be a stale NVRAM boot entry.Or it's reordering the boot priority.
Otherwise the stick would bebooted by default, if present.> The internal drive for this
machine dual boots Fedora 24 and Windows.> Only the external drive was used by Anaconda
for the F25 installation.> It might be possible to update GRUB on the internal drive so
it can boot> F25 from the external drive, but I rather like the present state where
no> change was made to the internal storage medium.The boot manager aspects of GRUB are
weak, it still depends on staticconfiguration rather than dynamic discovery. Discovery is
difficult asos-prober's existence and history shows. There's a proposed standardto
help, but there's no meaningful agreement on it among any of thestake holders.But yes,
it's possible to statically get a boot entry into GRUB butthen it appears as if
it's a valid option even when the stick isn'tpresent. If the stick has to be
recreated/replaced, then that bootentry won't work.-- Chris
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