Changeset 77117 in vbox for trunk/src/VBox

Timestamp:

Feb 1, 2019 2:23:13 PM (6 years ago)

Author:

vboxsync

Message:

Updated BIOS note.

File:

• trunk/src/VBox/Devices/PC/BIOS/notes.txt (modified) (1 diff)

trunk/src/VBox/Devices/PC/BIOS/notes.txt

@@ -53 +53 @@
   physical ATA disk geometry; for that reason, disks smaller than ~500MB are
   easiest to use. Otherwise a "large" BIOS disk option would be required.
+
+- Older NetWare IDE disk drivers (IDE.DSK from 1993, likely older as well)
+  fall into the same category. If FDPT contains logical geometry, NetWare
+  malfunctions. NetWare 3.x/4.x is unusual in that it boots from a DOS
+  partition using BIOS, and only later switches to its own disk drivers.
+  NetWare reportedly understands FDPT cylinder values over 1024, but requires
+  physical disk geometry in the FDPT (only up to 16 heads).
 
 - Some really old OSes (Xenix circa 1986-7) do not understand the EBDA idea