On 11/13/19 18:13, Marcel Partap wrote:
Dear grub devs,
as we have just last week released a hundred of our debian-based
https://github.com/fsfw-dresden/usb-live-linux/ sticks .. and at the moment are rolling
out a version for primary schools, I have stumbled over the pure stupidity that is
Windows 10's handling of partitioned usb drives. As seems abundantly documented, windows
changed its behaviour sometime last year and now blatantly ignores the hidden flag,
displaying partitions regardless of type and prominently offering to format non-windows
filesystems. I was somewhat shocked at this ridiculous demeanour.. After an hour of
investigating this I found the very sole workaround was to set the partition type to 0 -
empty/none. This was the only way to windows not show and offer to format partitions
beyond the exchange FAT partition. Rejoicing, on restart I found out that grub would not
proceed booting from a partition of type "empty". Now semantically, that is
totally correct. However, in order to provide us with a coping mechanism for such live
linux use scenarios, I propose to add a flag that overrides this code:
Why wouldn't the following work?
Partition 1: type: FAT32 Linux mount point: /boot
Partition 2: type: 0 Linux mount point: /
The kernel image, initramfs, and all the files GRUB needs to boot are
placed in partition 1, the rest of Linux in partition 2. At that point
you won't be relying on GRUB to mount partition 2 as your initramfs
would be handling it.
Regards,
Nicholas Vinson
static inline int
grub_msdos_partition_is_empty (int type)
{
return (type == GRUB_PC_PARTITION_TYPE_NONE);
}
to allow booting from partitions of type 0 empty/none.
This should cause less confusion to the hundreds of young students atm wondering about
"what the hell is formatting" ..
Best Regards,
#marcel
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