First Launch after install fails: IO Exception writing client-intermediary.jar.tmp on Portable/RAMDrive, successful write on 'physicaldisk'; moving completed client-intermediary.jar to Portable/RAMDrive runs fine.

[Shaggygoblin]

I have 128GB RAM.
I have Minecraft (16 GB RD) and other games, like Subnautica+BZ (32GB RD), Transport Fever 2 (32GB RD), Kerbal Space Program (16 GB RD) installed on RAMDrives (RD) using ImDisk.
Minecraft runs great; vanilla, setup as a portable install. Subnautica and Subnautic: Below Zero are amazingly fast. Loading TPF2 is a flash and zipping around the map is hitchless. Kerbal Space Program has no stuttering when loading in new bodies.

Trying to install Fabric, not so much.
I get an IO Exception writing to client-intermediary.jar.tmp.

Moving the install to a folder on the desktop (as a portable install), and then running the first launch (to do the remapping) works and I get straight to the Main Menu afterward.

Then I move the good client-intermediary.jar back to the correct spot on the RAMDrive.
Launch again from the RAMDrive...straight to Main Menu.

There is a failure at the remapping thing, and I suspect it's due to some way it's trying to access the file.
Almost like it's using some way-too-fancy hardware-level storage access to do the read/write instead of sticking to the known-working filesystem/path-level access that the parent, launcher/minecraft, uses (even with the anal-ity of the Microsoft Account / Xbox GamePass bullshit crap).
The RAMDisk is known for not being accessible with hardware-level I/O functions. Everything else, which only uses filesystem/path-level read/write works a peach. (Yes, I'm aware there are offerings that create a iSCSI interface for the RAMDisk, but they're too small, or do not support sync and/or mount at boot. Also, the few which do offer this, want a premium for function that, frankly, should have been added into the OS when M$ had their own driver sample)

Some of these issues appear to be a close match, but not 'duplicate' of my issue.

FWIW:
I built my Portable Minecraft using the steps outlined in these two wiki pages:
Tutorials/Playing and saving Minecraft on a thumb drive
Tutorials/Playing and saving Minecraft on a thumb drive with the old launcher

My launcher batch (Modded_1.19.2.bat):
@echo off set APPDATA="M:\Data_1.19.2" start "" "M:\Launcher\Minecraft.exe" --workDir "M:\Modded_1.19.2"

If you want a log from it running first/second launch from RAMDrive:

First launch fabricloader.log

first launch launcher_log.txt
Line# 1964 - 2013

[Info: 2022-10-15 23:33:59.8658530: GameCallbacks.cpp(228)] Launcher/launcher (main) Info [18:33:40] [INFO] [FabricLoader/GameProvider]: Loading Minecraft 1.19.2 with Fabric Loader 0.14.9

[18:33:40] [INFO] [FabricLoader/GameRemap]: Fabric is preparing JARs on first launch, this may take a few seconds...

[18:33:41] [ERROR] [FabricLoader/]: Uncaught exception in thread "main"

java.lang.RuntimeException: error remapping game jars [\Modded_1.19.2\versions\fabric-loader-0.14.9-1.19.2\fabric-loader-0.14.9-1.19.2.jar]

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate(GameProviderHelper.java:240)

at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.initialize(MinecraftGameProvider.java:313)

at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:142)

at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)

at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

Caused by: java.io.IOException: the jar file \Modded_1.19.2.fabric\remappedJars\minecraft-1.19.2-0.14.9\client-intermediary.jar.tmp can't be written

at net.fabricmc.tinyremapper.OutputConsumerPath.(OutputConsumerPath.java:114)

at net.fabricmc.tinyremapper.OutputConsumerPath.(OutputConsumerPath.java:47)

at net.fabricmc.tinyremapper.OutputConsumerPath$Builder.build(OutputConsumerPath.java:76)

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate0(GameProviderHelper.java:294)

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate(GameProviderHelper.java:238)

... 4 more

[Info: 2022-10-15 23:33:59.8659310: GameCallbacks.cpp(228)] Launcher/monitor (Process Monitor) Fatal Process crashed with exit code 1
[Info: 2022-10-15 23:33:59.8666141: GameController.cpp(536)] Game closed with id 1
[Info: 2022-10-15 23:33:59.8668045: NetQueue.cpp(695)] NetQueue: Starting net action http://hopper.minecraft.net/crashes/submit_report/
[Info: 2022-10-15 23:33:59.8896084: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-10-15 23:33:59.8950931: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-10-15 23:33:59.9965490: NetQueue.cpp(484)] NetQueue: Primary ip: 35.168.97.233, Host: hopper.minecraft.net
[Info: 2022-10-15 23:33:59.9966021: NetQueue.cpp(573)] NetQueue: Action finished: http://hopper.minecraft.net/crashes/submit_report/
[Info: 2022-10-15 23:33:59.9967179: GameCallbacks.cpp(90)] Destroying GameCallbacks!
[Info: 2022-10-15 23:33:59.9967549: Process_Windows.cpp(76)] Exiting process ...\javaw.exe
[Info: 2022-10-15 23:33:59.9967854: Process_Windows.cpp(80)] Joining stdout thread
[Warning: 2022-10-15 23:33:59.9968037: Process_Windows.cpp(82)] The io_service is still running work so signal it to stop..
[Info: 2022-10-15 23:33:59.9970426: Process_Windows.cpp(86)] Joined!
[Info: 2022-10-15 23:33:59.9978114: client_handler.cpp(852)] NotifyBrowserClosing
[Info: 2022-10-15 23:33:59.9979796: browser_window.cpp(61)] OnBrowserClosing
[Info: 2022-10-15 23:34:00.0093021: client_handler.cpp(881)] NotifyBrowserClosed
[Info: 2022-10-15 23:34:00.0093549: browser_window.cpp(68)] OnBrowserClosed (with delegate)
[Info: 2022-10-15 23:34:00.0103570: root_window_manager.cpp(303)] Main window has been closed: 0D147548

Second launch fabricloader.log

Second launch launcher_log.txt
line# 2044 - 2095

[Info: 2022-10-16 00:30:39.3334305: GameCallbacks.cpp(228)] Launcher/launcher (main) Info [19:30:12] [INFO] [FabricLoader/GameProvider]: Loading Minecraft 1.19.2 with Fabric Loader 0.14.9

[19:30:13] [WARN] [FabricLoader/GameRemap]: Incomplete remapped file found! This means that the remapping process failed on the previous launch. If this persists, make sure to let us at Fabric know!

[19:30:13] [INFO] [FabricLoader/GameRemap]: Fabric is preparing JARs on first launch, this may take a few seconds...

[19:30:14] [ERROR] [FabricLoader/]: Uncaught exception in thread "main"

java.lang.RuntimeException: error remapping game jars [\Modded_1.19.2\versions\fabric-loader-0.14.9-1.19.2\fabric-loader-0.14.9-1.19.2.jar]

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate(GameProviderHelper.java:240)

at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.initialize(MinecraftGameProvider.java:313)

at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:142)

at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)

at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

Caused by: java.io.IOException: the jar file \Modded_1.19.2.fabric\remappedJars\minecraft-1.19.2-0.14.9\client-intermediary.jar.tmp can't be written

at net.fabricmc.tinyremapper.OutputConsumerPath.(OutputConsumerPath.java:114)

at net.fabricmc.tinyremapper.OutputConsumerPath.(OutputConsumerPath.java:47)

at net.fabricmc.tinyremapper.OutputConsumerPath$Builder.build(OutputConsumerPath.java:76)

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate0(GameProviderHelper.java:294)

at net.fabricmc.loader.impl.game.GameProviderHelper.deobfuscate(GameProviderHelper.java:238)

... 4 more

[Info: 2022-10-16 00:30:39.3335129: GameCallbacks.cpp(228)] Launcher/monitor (Process Monitor) Fatal Process crashed with exit code 1
[Info: 2022-10-16 00:30:39.3342476: GameController.cpp(536)] Game closed with id 1
[Info: 2022-10-16 00:30:39.3345359: NetQueue.cpp(695)] NetQueue: Starting net action http://hopper.minecraft.net/crashes/submit_report/
[Info: 2022-10-16 00:30:39.3661841: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-10-16 00:30:39.3727486: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-10-16 00:30:39.4475289: NetQueue.cpp(484)] NetQueue: Primary ip: 35.168.97.233, Host: hopper.minecraft.net
[Info: 2022-10-16 00:30:39.4475968: NetQueue.cpp(573)] NetQueue: Action finished: http://hopper.minecraft.net/crashes/submit_report/
[Info: 2022-10-16 00:30:39.4477062: GameCallbacks.cpp(90)] Destroying GameCallbacks!
[Info: 2022-10-16 00:30:39.4477479: Process_Windows.cpp(76)] Exiting process ...\javaw.exe
[Info: 2022-10-16 00:30:39.4477820: Process_Windows.cpp(80)] Joining stdout thread
[Warning: 2022-10-16 00:30:39.4478048: Process_Windows.cpp(82)] The io_service is still running work so signal it to stop..
[Info: 2022-10-16 00:30:39.4480715: Process_Windows.cpp(86)] Joined!
[Info: 2022-10-16 00:30:39.4493631: client_handler.cpp(852)] NotifyBrowserClosing
[Info: 2022-10-16 00:30:39.4495777: browser_window.cpp(61)] OnBrowserClosing
[Info: 2022-10-16 00:30:39.4572421: client_handler.cpp(881)] NotifyBrowserClosed
[Info: 2022-10-16 00:30:39.4573043: browser_window.cpp(68)] OnBrowserClosed (with delegate)
[Info: 2022-10-16 00:30:39.4585616: root_window_manager.cpp(303)] Main window has been closed: 0D4CCB18

Move stuff to 'physical disk':

(Modify the .bat):
@echo off set APPDATA="C:\Users\Daddy\Desktop\Minecraft_Portable\Data_1.19.2" start "" "C:\Users\Daddy\Desktop\Minecraft_Portable\Launcher\Minecraft.exe" --workDir "C:\Users\Daddy\Desktop\Minecraft_Portable\Modded_1.19.2"

Set Game Directory for Fabric in Launcher to: "C:\Users\Daddy\Desktop\Minecraft_Portable\Modded_1.19.2"

Here's what I get when running it from the Desktop:

Physical disk first launch latest.log

launcher_log.txt
Line# 2055 - 2066

[Info: 2022-10-16 01:01:36.1090373: GameCallbacks.cpp(228)] Game/FabricLoader/GameProvider (main) Info Loading Minecraft 1.19.2 with Fabric Loader 0.14.9
[Info: 2022-10-16 01:01:36.1109316: GameCallbacks.cpp(228)] Game/FabricLoader/GameRemap (main) Warn Incomplete remapped file found! This means that the remapping process failed on the previous launch. If this persists, make sure to let us at Fabric know!
[Info: 2022-10-16 01:01:36.1110666: GameCallbacks.cpp(228)] Game/FabricLoader/GameRemap (main) Info Fabric is preparing JARs on first launch, this may take a few seconds...
[Info: 2022-10-16 01:01:36.5147218: GameCallbacks.cpp(228)] Game/FabricLoader (main) Info Loading 3 mods:

• fabricloader 0.14.9
• java 17
• minecraft 1.19.2
  [Info: 2022-10-16 01:01:36.6133667: GameCallbacks.cpp(228)] Game/FabricLoader/Mixin (main) Info SpongePowered MIXIN Subsystem Version=0.8.5 Source=file:/C:/Users/Daddy/Desktop/Minecraft_Portable/Modded_1.19.2/libraries/net/fabricmc/sponge-mixin/0.11.4+mixin.0.8.5/sponge-mixin-0.11.4+mixin.0.8.5.jar Service=Knot/Fabric Env=CLIENT
  [Info: 2022-10-16 01:01:37.5477517: GameCallbacks.cpp(228)] Game/oshi.util.FileUtil (main) Warn Configuration conflict: there is more than one oshi.properties file on the classpath
  [Info: 2022-10-16 01:01:38.1402609: GameCallbacks.cpp(228)] Game/oshi.util.FileUtil (main) Warn Configuration conflict: there is more than one oshi.architecture.properties file on the classpath
  [Info: 2022-10-16 01:01:38.5338245: GameCallbacks.cpp(228)] Game/oshi.util.platform.windows.PerfDataUtil (main) Warn Failed to update counter. Error code: 0x800007D5
  [Info: 2022-10-16 01:01:38.5341314: GameCallbacks.cpp(228)] Game/oshi.util.platform.windows.PerfCounterQuery (main) Warn Disabling further attempts to query Paging File.

Now I have (RAMDRive)"M:\Modded_1.19.2.fabric\remappedJars\minecraft-1.19.2-0.14.9\client-intermediary.jar.tmp"
client-intermediary.jar.tmp.zip

And (Physical disk)"C:\Users\Daddy\Desktop\Minecraft_Portable\Modded_1.19.2.fabric\remappedJars\minecraft-1.19.2-0.14.9\client-intermediary.jar"
client-intermediary.jar.zip

I take the new client-intermediary.jar from the physical disk, and place it in the RAMDisk at client-intermediary.jar.tmp, and delete the .tmp.

Run the .bat from the RAMDrive one final time nets me the following logs:

latest.log

launcher_log.txt
Line# 1392 - 1397

[Info: 2022-10-16 01:41:10.0989737: GameCallbacks.cpp(228)] Launcher/launcher (main) Info Minecraft client fabric-loader-0.14.9-1.19.2 is ready to start.
[Info: 2022-10-16 01:41:10.0990318: GameController.cpp(489)] Starting game with token 1
[Info: 2022-10-16 01:41:10.0990540: GameCallbacks.cpp(228)] Launcher/launcher (main) Info Starting!
[Info: 2022-10-16 01:41:10.0991198: GameCallbacks.cpp(228)] Launcher/launcher (main) Debug Nothing to download!
[Info: 2022-10-16 01:41:10.0991591: GameCallbacks.cpp(228)] Launcher/launcher (main) Debug Downloading Java Runtime java-runtime-gamma:17.0.3
[Info: 2022-10-16 01:41:10.0998580: PistonInstaller.cpp(333)] Inspecting files in ...\java-runtime-gamma

And more importantly, a working Fabric install on the RAMDrive.

I can't find it again, but read somewhere when looking for info on this crash, that when sending the log(s), some info in them is 'sensitive' and should be redacted/obfuscated. If full launcher_log.txt's are needed, please let me know what needs scrubbed in them.

[amolinarius]

Any updates on this? Still not working for me, even when using a symlink in the %appdata%/.minecraft