diff options
Diffstat (limited to 'contrib/syslinux/latest/doc/usbkey.txt')
-rw-r--r-- | contrib/syslinux/latest/doc/usbkey.txt | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/contrib/syslinux/latest/doc/usbkey.txt b/contrib/syslinux/latest/doc/usbkey.txt deleted file mode 100644 index 33613d6..0000000 --- a/contrib/syslinux/latest/doc/usbkey.txt +++ /dev/null @@ -1,47 +0,0 @@ -The proper mode to boot a USB key drive in is "USB-HDD". That is the -ONLY mode in which the C/H/S geometry encoded on the disk itself -doesn't have to match what the BIOS thinks it is. Since geometry on -USB drives is completely arbitrary, and can vary from BIOS to BIOS, -this is the only mode which will work in general. - -Some BIOSes have been reported (in particular, certain versions of the -Award BIOS) that cannot boot USB keys in "USB-HDD" mode. This is a -very serious BIOS bug, but it is unfortunately rather typical of the -kind of quality we're seeing out of major BIOS vendors these days. On -these BIOSes, you're generally stuck booting them in USB-ZIP mode. - -THIS MEANS THE FILESYSTEM IMAGE ON THE DISK HAS TO HAVE A CORRECT -ZIPDRIVE-COMPATIBLE GEOMETRY. - -A standard zipdrive (both the 100 MB and the 250 MB varieties) have a -"geometry" of 64 heads, 32 sectors, and are partitioned devices with a -single partition 4 (unlike most other media of this type which uses -partition 1.) The 100 MB variety has 96 cylinders, and the 250 MB -variety has 239 cylinders; but any number of cylinders will do as -appropriate for the size device you have. For example, if your device -reports when inserted into a Linux system: - -usb-storage: device found at 4 - Vendor: 32MB Model: HardDrive Rev: 1.88 - Type: Direct-Access ANSI SCSI revision: 02 -SCSI device sda: 64000 512-byte hdwr sectors (33 MB) - -... you would have 64000/(64*32) = 31.25 cylinders; round down to 31. - -The script "mkdiskimage" which is supplied with the syslinux -distribution can be used to initialize USB keys in a Zip-like fashion. -To do that, calculate the correct number of cylinders (31 in the -example above), and, if your USB key is /dev/sda (CHECK THE KERNEL -MESSAGES CAREFULLY - IF YOU ENTER THE WRONG DISK DRIVE IT CANNOT BE -RECOVERED), run: - - mkdiskimage -4 /dev/sda 0 64 32 - -(The 0 means automatically determine the size of the device, and -4 -means mimic a zipdisk by using partition 4.) - -Then you should be able to run - - syslinux /dev/sda4 - -... and mount /dev/sda4 and put your files on it as needed. |