Re-activate disabled Ram Doubler 9

i have installed a ram doubler 9 on my twentieth anniversary macintosh (TAM) to increase the ram from 128mb to 256mb . it works perfectly til yesterday .
i originally want to rebuild desktop (holding the control and option keys while starting up , but accidentally made the ram doubler disabled !
whenever i boot the TAM , the icon underneath shown a big red cross on it , then a dialogue said that the ramdoubler was moved or disabled , asking me to restart the computer . i restart it , no luck . big cross was still there .
based on my memory of switching on / off ram doubler , i tried to switch it off again by holding the ~ key while starting up , hope that i can have it back . but i even lost the ram doubler icon while starting !
how can i reactivate the ram doubler .
anybody please help !
twentieth anniversay macintosh Mac OS 9.2.x ibook G4

hi ,
i cannot found ram doubler in extension manager , only found it in the control panel , what and where i should put into the extension manager ? thanks for your helps .

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Re-activate disabled Ram Doubler 9 for a TAM

i have installed a ram doubler 9 on my twentieth anniversary macintosh (TAM) to increase the ram from 128mb to 256mb . it works perfectly til yesterday .
i originally want to rebuild desktop (holding the control and option keys while starting up , but accidentally made the ram doubler disabled !
whenever i boot the TAM , the icon underneath shown a big red cross on it , then a dialogue said that the ramdoubler was moved or disabled , asking me to restart the computer . i restart it , no luck . big cross was still there .
based on my memory of switching on / off ram doubler , i tried to switch it off again by holding the ~ key while starting up , hope that i can have it back . but i even lost the ram doubler icon while starting !
how can i reactivate the ram doubler .
anybody please help !

I haven't used RamDoubler for some time now, ever since I got my G3 there has been no need for it. I remember tho, it had some peculiarities. When de-activated, it needed to be 're-activated'. I had to do this quite often, so I came up with a solution: I made an image of the installer disk, and placed it on the desktop. When I had to re-activate the thing, I mounted the image, re-installed (it didn't copy anything, but did something useful apparently), and I was asked to restart. Once I did, RamDoubler was active.
Hope this helps, and if not, then there are perhaps other things to try. But start with the easiest solution first.

RAM Doubler broken by OS 9 Startup Disk control panel

After setting up a PowerBook G3 with OS 9.2.2, thought I'd install RAM Doubler since it has only 128MB of RAM (and just for nostalgia's sake). Seems to work fine (of course, had to install the two OS 9 RD updates), but then I started from an external disk to run Disk Warrior on it, and when I returned to the internal disk RAM Doubler was disabled "because it had been moved". I remember RD had a piracy-protection system to prevent copying; apparently this was triggered somehow.
Experimentation determined that the trigger was the Startup Disk control panel: if this control panel is even opened, without changing any settings, RD is immediately disabled. Though the alert suggests "Restart your computer to run more applications," this doesn't work; RD must be reinstalled at this point.
I assume this is a bug that appeared in Mac OS 9 sometime after Connectix went out of business, so was never addressed/fixed. (I haven't tried this with 9.0.x or 9.1.) It can be avoided by not using the Startup Disk control panel, instead using the C key to start up from a CD, or cmd-opt-shift-delete to force startup from an external disk. Either of these expedients does not affect RD, but the Startup Disk control panel kills it.
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Hi, HandyMac -
There have been a few posts over the years indicating that RamDoubler can't quite get to full compatibility with OS 9. This may have to do with some applications in OS 9 having the ability to use dynamic memory allocation, a function probably not expected by RamDoubler.
As Baby Boomer suggests, leaving RamDoubler off and using the OS's native Virtual Memory function should prove to be more stable.
Best is to increase the physical RAM in the machine. I have 896MB RAM in this G4, and am able to leave Virtual Memory off.

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Dear All,
shar
We have an ECC6 server on windows 64 bit oracle which was running on 12 gb of RAM
Now we have upgraded to 24 GB of RAM.
Which all parameters need to be changed at oracle and SAP level for this.
Please update
Regards
Sandeep

Hi,
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Hello, here's the info I have on older startup key combos...
Apple Boot Key Combos:
Bypass startup drive and boot from external (or CD).... CMD-OPT-SHIFT-DELETE
Boot from CD (Most late model Apples) ................. C
Boot from a specific SCSI ID #.(#=SCSI ID number)...... CMD-OPT-SHIFT-DELETE-#
Zap PRAM .............................................. CMD-OPT-P-R
Disable Extensions .................................... SHIFT
Rebuild Desktop ....................................... CMD-OPT
Close finder windows.(hold just before finder starts).. OPT
Boot with Virtual Memory off........................... CMD
Trigger extension manager at boot-up................... SPACE
Force Quadra av machines to use TV as a monitor........ CMD-OPT-T-V
Boot from ROM (Mac Classic only)....................... CMD-OPT-X-O
Force PowerBooks to reset the screen................... R
Force an AV monitor to be recognized as one............ CMD-OPT-A-V
Eject Boot Floppy...................................... Hold Down Mouse Button
Select volume to start from............................ OPT
Start in Firewire drive mode........................... T
Startup in OSX if OS9 and OXS in boot partition........ X or CMD-X
Hold down until the 2nd chime, will boot into 9?....... CMD-OPT
OSX: Watch the status of the system load............... CMD-V
OSX: Enter single-user mode (shell-level mode)......... CMD-S
After startup:
Bring up dialogue for shutdown/sleep/restart........... POWER
Eject a Floppy Disk.................................... CMD-SHIFT-1 or(2) or (0)
Force current app to quit.............................. CMD-OPT-ESC
Unconditionally reboot................................. CTRL-CMD-POWER
Fast Shutdown.......................................... CTRL-CMD-OPT-POWER
Goto the debugger (if MacsBug is installed)............ CMD-POWER
Reset Power Manager on PowerBooks...................... USE THIS LINK
Put late model PowerBooks & Desktops to sleep.......... CMD-OPT-POWER
Application Specific Keys:
Startup key combos to reset the resolution on video boards:
SuperMac (at least some models)press&hold.............. OPT
Imagine 128 Card (reset resolution).................... N
RasterOps (at least some models)press&hold............. CMD-OPT-SHIFT
Radius (Use cable sense pins to set resolution)........ U
Radius (Cycle through available resolutions)........... T
Conflict Catcher:
Pause Boot........................................... P
Launch CC at Startup................................. SPACE or CAPS LOCK
Skip remaining extensions............................ CMD-PERIOD
Reboot cleanly while loading extensions.............. CMD-R
RAM Doubler:
Disable at Startup................................... ~ (Tilde) or ESC
Apple System Installer:
Change custom install to clean install............... CMD-Shift-K
Claris Emailer:
Bypass specified startup connections................. Hold CMD at launch
Bring up rebuild options............................. Hold OPT at launch
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Most Macintosh users know about holding the Shift key down to prevent extensions from loading, but there are numerous startup modifiers that affect the state of the system after the boot process finishes.
* Shift causes the Mac to boot without extensions, which is useful for troubleshooting extension conflicts. If you hold down Shift after all the extensions have loaded but before the Finder launches, it also prevents any startup items from launching.
* Spacebar launches Apple's Extensions Manager early in the startup process so you can enable or disable extensions before they load. Casady & Greene's Conflict Catcher, if you're using it instead of Extensions Manager, also launches if it sees you holding down the spacebar, or, optionally, if Caps Lock is activated. Conflict Catcher also adds the capability to configure additional startup keys as ways of specifying that a particular startup set should be used. Choose Edit Sets from the Sets menu, select a set in the resulting dialog and click Modify. In the sub-dialog that appears, you can specify a startup key and check the checkbox to make it effective.
* Option, if held down as the Finder launches, closes any previously open Finder windows. On stock older Macs, holding down Option does nothing at startup by default, although some extensions may deactivate if Option is held down when they attempt to load; see below for Option's effect on new Macs and Macs with Zip drives.
* Control can cause the Location Manager to prompt you to select a location. Although Control is the default, you can redefine it in the Location Manager's Preferences dialog, and since Control held down at startup also activates Apple's MacsBug debugger (see below), you may wish to pick a different key combination.
* Command turns virtual memory off until the next restart.
* Shift-Option disables extensions other than Connectix's RAM Doubler (and MacsBug - see below). To disable RAM Doubler but no other extensions, hold down the tilde (~) key at startup.
Choosing Startup Disks
Not surprisingly, many of the startup modifiers affect the disk used to boot the Mac. A number of these are specific to certain models of the Macintosh.
* The mouse button causes the Mac to eject floppy disks and most other forms of removable media, though not CD-ROMs.
* The C key forces the Mac to start up from a bootable CD-ROM, if one is present, which is useful if something goes wrong with your startup hard disk. This key doesn't work with some older Macs or clones that didn't use Apple CD-ROM drives; they require Command- Shift-Option-Delete instead (see below).
* Option activates the new Startup Manager on the iBook, Power Mac G4 (AGP Graphics), PowerBook (FireWire), and slot-loading iMacs. The Startup Manager displays a rather cryptic set of icons indicating available startup volumes, including any NetBoot volumes that are available. On some Macs with Iomega Zip drives, holding down Option at startup when there is a Zip startup disk inserted will cause the Mac to boot from the Zip disk.
* Command-Shift-Option-Delete bypasses the disk selected in the Startup Disk control panel in favor of an external device or from CD-ROM (on older Macs). This is also useful if your main hard disk is having problems and you need to start up from another device. (On some PowerBooks, however, this key combination merely ignores the internal drive, which isn't as useful.)
* The D key forces the PowerBook (Bronze Keyboard and FireWire) to boot from the internal hard disk.
* The T key forces the PowerBook (FireWire) (and reportedly the Power Mac G4 (AGP Graphics), though I was unable to verify that on my machine) to start up in FireWire Target Disk Mode, which is essentially the modern equivalent of SCSI Disk Mode and enables a PowerBook (FireWire) to act as a FireWire-accessible hard disk for another Macintosh.
Seriously Tweaky Startup Modifiers
Only programmers and the most geeky of users will find these startup modifiers useful.
* Control activates Apple's MacsBug debugger as soon as it loads. If you rely on this frequently, you may want to redefine the default key for selecting the Location Manager location at startup from Control to something else.
* Shift-Option disables extensions and virtual memory but still loads MacsBug, which would otherwise be disabled by the Shift key.
* Command-Option-O-F puts you into Open Firmware mode on PCI-based Macs and clones. Open Firmware is a cross-platform firmware standard for controlling hardware that all PCI-based Macs use. It's mostly of interest to hardware developers, but it can be a fun way to freak out a new user who's not expecting to see a command line on the Mac. To exit Open Firmware and continue booting, type "mac-boot" or "bye" (depending on Macintosh model) and press Return. For a list of commands you can enter while in Open Firmware mode, see the Tech Info Library article.
Just for Fun
Although Apple has moved away from relatively frivolous "Easter Eggs" connected with startup modifiers, there are a few available for old Macintosh models.
* Command-X-O, when held down at startup on a Macintosh Classic boots the Classic from a built-in ROM disk.
* Command-Option-C-I, when held down at startup on a Macintosh IIci whose date has been set to 20-Sep-89 (the machine's introduction date), produces some sort of graphical display that I can't check for lack of a relevant machine. A different display appears if you hold down Command-Option-F-X at startup on a Macintosh IIfx with the date set to 19-Mar-90.

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Moderator message: not directly related to ABAP development.
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Hi,
i do not think you can deactivate this.
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Regards,
Christoph

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Only one CPU can access the RAM at a time, meaning the memory bandwidth is halved:
(rightclick and choose "View Image" for more detail)
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http://www.planetamd64.com/lofiversion/index.php/t472.html says this is a NUMA mobo..
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I found it
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Welcome to Apple Discussions.
More RAM is always the better way. I have 1.5 in my iBook and it runs very smoothly. Make sure you purchase from a reputable dealer. I purchased mine from MacRam Direct.
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Re-activate disabled Ram Doubler 9

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