[bug #36672] GRUB fails to read FAT filesystem label

[qwertial]

Follow-up Comment #8, bug #36672 (project grub):

MS-DOS 6.22 labeling utility lets me use spaces. And it does mark the record
with the "archive" bit set. (And actually, raw DOS API lets one create regular
files with spaces in their names, without VFAT - they just were not very
popular, because of how command line works in there.)

My copy of dosfstools lets me put any character in a label. I guess it should
not, but I like it. MS-DOS and FreeDOS read it without complaining. A more
modern operating system might not, but I doubt it.

$ mkdosfs -n '/;^<>' test.img
mkdosfs 3.0.12 (29 Oct 2011)
$ dosfslabel test.img
/;^<>
$ dosfslabel test.img :?*
$ dosfslabel test.img
:?*
$ dosfsck test.img
dosfsck 3.0.12, 29 Oct 2011, FAT32, LFN
test.img: 1 files, 1/1046526 clusters
$ 

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