Comment 36 for bug 1922342
Revision history for this message
| Thomas Schmitt (scdbackup) wrote Re: HIrsute live session takes ages to boot on BIOS systems | #36 |
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7020100
(Get the code!)
Hi,
José Marinho wrote:
> Marking the first partition as bootable legacy BIOS:
> - Plymouth --> 54 seconds.
> - Desktop environment --> 1 minute 45 seconds
Without converting to GPT ?
That would be really strange and surely no solution for the gerneral public.
(It is not allowed by GPT specs to set the "bootable" flag on the
"protective MBR partition" of type 0xEE, which serves as indication that
GPT is valid and also shall protect the data range of the GPT partitions.
Tests with grub-mkrescue ISOs on EFI systems failed. This led to the
introduction of the second partition of type 0x00 with boot flag.)
> Without marking any partition as bootable but changing the partition table
> from GPT to MBR:
> - Plymouth --> 25 seconds.
> - Desktop environment --> 1 minute 20 seconds.
So the BIOS or GRUB on that BIOS get deceived by a boot flag at the second
(dummy) partition, but the BIOS does not demand the boot flag on MBR
partition table.
> would it be too inconvenient to release 2 isos: a main iso
> for most computers and a legacy iso with an MBR partition table for use if
> somebody has problems with the main iso?
Debian does something similar for its "netinst" ISOs.
The BIOS-only ISO with no GPT and no EFI partition is deceivingly named
"mac", because the machines which need it are old x86 Apple machines.
Those machines are said to take offense from the presence of the EFI
partition or of the invald GPT in mjg's partition layout.
Normal BIOS+EFI ISO:
https:/
The BIOS-only "mac" ISO is at:
https:/
Each has about 330 MB.
The version number may change in a few weeks or days. Look by a web browser at
https:/
for
debian-
debian-
Have a nice day :)
Thomas