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Macintosh Snag Keys  

Macintosh users sometimes need to hold snag keys at startup to redirect the boot process into Open Firmware, to boot from CD-ROM, etc. However, fingers held stationary on any key during TouchStream power-up are invisible to the sensors.

Snag Key Circling

Our solution is to circle the desired TouchStream key with a fingertip at startup, rather than hold a finger stationary on the key. For best results:

  1. Before touching the surface, first wait for the Mac power-up chime (which should come about 5 seconds after you hit the power button).
  2. Circle the desired key (see table below) a few times during the power-up chime.
  3. Lift your finger off the surface and wait for the desired Mac boot screen to appear. You don't need to keep circling while waiting for the boot screen to appear.

You can also zig-zag your finger back and forth across the desired surface key rather than circle it, if you find that easier.

NOTE: You'll need to upgrade your TouchStream to Firmware v1.30 or higher for key circling to work. Firmware v1.30 only enables boot snag keys on TouchStream MacNTouch and Touchstream LP/ST models that are less than 1 year old.

Key Circling invokes Symbol Pad Macros

Some of the multi-key Snag sequences are quite tricky to perform on a mechanical keyboard, but with Snag Key circling you don't have to worry about holding down multiple keys. These multi-key sequences are pre-programmed into MyGesture Editor SymbolPad macros for the surface keys shown below. Just circle the surface key indicated in the table below and the entire snag sequence will be sustained automatically.

If you need to modify these or create additional snag sequences, just select a surface key in the MyGesture Editor, select the SymbolPad event filter and edit the key list.

Normal Mac Snag Keys QWERTY Key to Circle DVORAK Key to Circle Open Firmware Boot Action
C
C
J
Boot from CD-ROM
D
D
E
Boot from Internal Hard Disk
N
N
B
Boot from Network Server
R
R
P
Force PowerBook to Reset Screen
T
T
Y
Firewire Target Disk Mode
Z
Z
;
Boot from Zip Partition
Cmd-Option-Shift-Delete
Delete
Delete
Boot from other (CD-ROM or SCSI)
Cmd-Option-O-F
O
R
Boot into Open Firmware
Cmd-Option-P-R
P
L
Reset PRAM (hold till 2nd chime)
Option
Alt/Option
Alt/Option
Bring up Startup Manager
Cmd-S
S
O
Boot into OS X single-user mode
Cmd-V
V
K
Show verbose console messages during OS X boot
Cmd-Option
9
9
Boot into Mac OS 9?
Cmd-X
X
B
Boot into Mac OS X?
Shift
Left Shift
Left Shift
Safe Boot Mode--Disables login items and non-essential kernel extensions.
Ctrl
Ctrl Ctrl Invoke MacBugs (Classic Only)
Cmd
Cmd Cmd Virtual Memory Off (Classic only)
Space
Space Space Trigger Extension Manager
(Classic Only)
Mouse Button Down
E
.
Eject Removable Media
 
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