Re: too long to "hand off"(?) from bootloader to kernel/initrd (

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On Tuesday 2016-01-12 21:35, Felix Miata wrote:
> Filesystem type is ex2fs, partition type 0x83
>kernel /boot/vmlinuz <yada...>
>initrd /boot/initrd
>
>Above used to display on screen barely long enough to notice. Since about a
>year ago, maybe 11 months or less, on at least two different HDs and with
>multiple distro, dracut and kernel versions, I have been seeing enormous
>delays, with the above on screen several minutes with some
>distro/kernel/initrd duos, but not with others.[...]
>What's responsible for the delay besides initrd size? BIOS disk access sloth?
>BIOS setting?

The BIOS certainly plays a role in it, in particular, how it
implements the int13 disk access. You see that with the huge
discrepancy of (openSUSE) DVD boot times with real (non-EFI)
hardware, and with a virtual machine (still non-EFI) "hardware".

The bootloader probably also factors in; harddisk booting is commonly
done with GRUB, but if you have some bootstick, it may be with
syslinux/extlinux. Or you use pxelinux over network - even there, the
speed differs vastly between hardware generations, even though
network is (even on old hardware) pretty much the same speed.
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