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| author | Michael Brown | 2021-04-13 21:30:20 +0200 |
|---|---|---|
| committer | Michael Brown | 2021-04-13 21:42:55 +0200 |
| commit | 8ca43ccbc1984d60e50711ea326ca59ac03985d2 (patch) | |
| tree | 36eec3856114d9aee452701e009b4b352873c267 /src/interface/linux/linux_sysfs.c | |
| parent | [cloud] Enable "poweroff" command in cloud images (diff) | |
| download | ipxe-8ca43ccbc1984d60e50711ea326ca59ac03985d2.tar.gz ipxe-8ca43ccbc1984d60e50711ea326ca59ac03985d2.tar.xz ipxe-8ca43ccbc1984d60e50711ea326ca59ac03985d2.zip | |
[int13] Do not report INT 13 extension support for emulated floppies
The INT 13 extensions provide a mechanism for accessing disks using
linear (LBA) rather than C/H/S addressing. SAN protocols such as
iSCSI invariably support only linear addresses and so iPXE currently
provides LBA access to all SAN disks (with autodetection and emulation
of an appropriate geometry for C/H/S accesses).
Most BIOSes will not report support for INT 13 extensions for floppy
disk drives, and some operating systems may be confused by a floppy
drive that claims such support.
Minimise surprise by reporting the existence of support for INT 13
extensions only for non-floppy drive numbers. Continue to provide
support for all drive numbers, to avoid breaking operating systems
that may unconditionally use the INT 13 extensions without first
checking for support.
Reported-by: Valdo Toost <vtoost@hot.ee>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/interface/linux/linux_sysfs.c')
0 files changed, 0 insertions, 0 deletions