by Alex » Thu Feb 11, 2010 7:23 pm
Pressing 'S' on start now shows the available Safe Modes. Previously, you had the memorize the varying key strokes to disable certain features. Now, the new system loader will show each option:
V -> forces VGA, even if VESA (True Color) would be available. This might help in case the VESA bios of the graphics card is defective.
B -> forces VGA via the BIOS. Usually, VGA is initialized by special port accesses to the graphic hardware. If B is pressed, this initializations are done via calls to the BIOS prior to starting Symobi and therefore no driver of Symobi can interfere here.
D -> does not use any help of the BIOS initialization at all. If the VGA bios is defective, letting the BIOS do the initialization might not work, so this key instructs the loader to do nothing at all and the graphics driver to do the complete initialization and not rely on the BIOS.
I -> no IDE. This disables the IDE (ATA) driver for Parallel IDE and Serial ATA in compatibility mode. Usually, this is not intended, but if the system freezes on startup, this might help.
S -> no SCSI. This disables the SCSI drivers, for the same reasons as for IDE.
A -> no AHCI. This disables the AHCI driver, which is used to access most of the Serial ATA drives (only a small percentage is accessed via the IDE driver).
U, O-> no UHCI/OHCI. This disables the USB 1.1 drivers used for USB mice and keyboards on most computers except for the very latest, where no USB 1.1 controllers are to be found anyway. UHCI can be found on Intel and VIA mainboards, whereas OHCI is found on all other boards.
E -> no EHCI. This disables the USB 2.0 driver. All devices connected should work nonetheless, but only at USB 1.1 speed (lest the UHCI and OHCI are disabled as well).
the USB drivers should be disabled if the system freezes at startup. Trying different variants of U, O and E should bring the culprit.
F -> no Firewire. This disables the Firewire driver.
N -> no network access. As of now, HDClone does not use any network, so this option has no effect.
P -> no APM. HDClone disables APM (Power Management) for hard disks, because otherwise they might power down during usage. If disabling APM leads to a system freeze, pressing P will avoid this.
Q -> no IRQ. This turns all active drivers in a interrupt-less mode, which increases compatibility and sometimes speed at the cost of higher CPU usage. Only to be used if during normal operation there appears to be a conflict with different devices sharing one IRQ channel.
C -> use Cardbus: Initially, this enabled the Cardbus-aware PCI subsystem. As of HDClone 3.8.4 this though activates the old PCI subsystem, and the new PCI subsystem is on as default.
1 -> use only one CPU. HDClone at the moment only uses one CPU, so this option has no effect.