[syslinux] USB booting
H. Peter Anvin
hpa at zytor.com
Mon Jan 3 15:29:09 PST 2005
Jim Cromie wrote:
> the following is lsusb -v for my 250gb usb hard drive.
> I note the Protocol line mentions zip:
> bInterfaceProtocol 80 Bulk (Zip)
> does that mean its one of those USB-ZIP devices ?
> If so, to the parameters below say anything about the CHS settings needed ?
No, 80 is the value for anything that isn't a standard floppy disk.
Whether or not it's used in USB-ZIP mode or USB-HDD mode is strictly a
matter of BIOS settings.
USB-HDD is the correct mode. USB-ZIP is fundamentally an abomination,
but it can usually be dealt with by specifying 64 heads, 32 sectors.
In USB-HDD mode SYSLINUX (or EXTLINUX) will derive the correct geometry
at runtime, so it matters not one bit what the geometry detected at
install time was set to.
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