chain module: bugfixing and cosmetics

[profile/ivi/syslinux.git] / doc / memdisk.txt

diff --git a/doc/memdisk.txt b/doc/memdisk.txt
index c7244ab..fecf2dc 100644 (file)
--- a/doc/memdisk.txt
+++ b/doc/memdisk.txt
@@ -139,6 +139,7 @@ h) Some systems without a floppy drive have been known to have
    doesn't work, you can use the option:
 
    nopass      Hide all real drives of the same type (floppy or hard disk)
+   nopassany    Hide all real drives (floppy and hard disk)
 
 
 Some interesting things to note:
@@ -190,13 +191,14 @@ The MEMDISK info structure currently contains:
        [ES:DI+2]       byte    MEMDISK minor version
        [ES:DI+3]       byte    MEMDISK major version
        [ES:DI+4]       dword   Pointer to MEMDISK data in high memory
-       [ES:DI+8]       dword   Size of MEMDISK data in 512-byte sectors
+       [ES:DI+8]       dword   Size of MEMDISK data in sectors
        [ES:DI+12]      16:16   Far pointer to command line
        [ES:DI+16]      16:16   Old INT 13h pointer
        [ES:DI+20]      16:16   Old INT 15h pointer
        [ES:DI+24]      word    Amount of DOS memory before MEMDISK loaded
        [ES:DI+26]      byte    Boot loader ID
-       [ES:DI+27]      byte    Currently unused
+       [ES:DI+27]      byte    Sector size as a power of 2
+                               (If zero, assume 512-byte sectors)
        [ES:DI+28]      word    If nonzero, offset (vs ES) to installed DPT
                                This pointer+16 contains the original INT 1Eh