Some articles on boot, boot drive unit:
... The boot code in the VBR can assume that the BIOS has set up its data structures and interrupts and initialized the hardware ... it should query INT 12h for it, since other pre-boot code (such as f.e ... may be present elsewhere in memory as well (and would typically hide themselves from the boot sector by reducing the reported INT 12h memory accordingly, so that ...
... following registers maintained or specifically set up CSIP = 0000h7C00h (fixed) DL = boot drive unit (see above) MS-DOS 2.0-7.0 / PC DOS 2.0-6.3 MBRs do not pass on the DL ... convention, 80h in most MBR partition tables, it won't change things unless the BIOS attempted to boot off a physical device other than the first fixed disk / removable ... why these operating systems cannot boot off a second hard disk etc ...
Famous quotes containing the words unit, boot and/or drive:
“During the Suffragette revolt of 1913 I ... [urged] that what was needed was not the vote, but a constitutional amendment enacting that all representative bodies shall consist of women and men in equal numbers, whether elected or nominated or coopted or registered or picked up in the street like a coroner’s jury. In the case of elected bodies the only way of effecting this is by the Coupled Vote. The representative unit must not be a man or a woman but a man and a woman.”
—George Bernard Shaw (1856–1950)
“... until the shopkeeper plants his boot in our eyes,
and unties our bone and is finished with the case,
and turns to the next customer, forgetting our face
or how we knelt at the yellow bulb with sighs
like moth wings for a short while in a small place.”
—Anne Sexton (1928–1974)
“Sean Thornton: I don’t get this. Why do we have to have you along. Back in the states I’d drive up, honk the horn, a gal’d come runnin’ out.
Mary Kate Danaher: Come a runnin’. I’m no woman to be honked at and come a runnin’.”
—Frank S. Nugent (1908–1965)