Submit Hint Search The Forums LinksStatsPollsHeadlinesRSS
14,000 hints and counting!


Click here to return to the 'Use Caution' hint
The following comments are owned by whoever posted them. This site is not responsible for what they say.
Use Caution
Authored by: TigerKR on Jan 15, '04 09:19:26PM

I had a conversation about the BootCacheControl situation:

iBuddy wrote:

"You haven't been using the BootCacheControl hack that I propagated? I traced some trouble to it, my cache apparently got out of sync after switching around the boot volume a few time, I've retracted my advice to use this hack."

I wrote:

"Try using a symlink. I've had no problems doing that.

sudo ln -s /System/Library/Extensions/BootCache.kext/Contents/Resources/BootCacheControl /usr/sbin/BootCacheControl

"

iBuddy wrote:

"I _was_ using a symlink. I had no problems for a while, either. The first sign of trouble was returning to my home system after testing an external firewire boot off my emergency/backup drive. Things got progressively worse to the point where I couldn't boot at all. Deleting the symlink solved all my problems, I've had none since.

I'm guessing Apple knew there was trouble, that's why they took it out. They're not stupid; I'm always concerned about the implied arrogance in making any hack like this."

I wrote:

"Hmm.. thanks for the warning. I only reboot like once or twice a week, and since I have 10K SCSI drives (which I keep optimized with Norton Speed Disk), booting up is pretty fast anyway. So I guess I'll also delete that symlink."



[ Reply to This | # ]
Use Caution
Authored by: TigerKR on Jan 15, '04 09:33:09PM

also see these links for other people's experiences:

http://discussions.info.apple.com/webx?128@37.ApkNaCubab1.39794@.599e619e

http://discussions.info.apple.com/WebX?128@37.ApkNaCubab1.0@.599e61e8



[ Reply to This | # ]
Use Caution
Authored by: jkline on Jan 17, '04 08:06:34PM

So how does one go about removing this modification after the fact. I applied the original fix in Terminal as written... everything seemed fine. But now based on what I am reading it seems best to get back to what was there in the first place.

I am a UNIX novice here... so please help with the correct command to remove this patch.



[ Reply to This | # ]
Use Caution
Authored by: encro on Jan 18, '04 12:28:07AM
To reverse it you need to look at what the command you entered is doing:

sudo ln -s /System/Library/Extensions/BootCache.kext/Contents/Resources/BootCacheControl /usr/sbin/BootCacheControl
This means using elevated priviliges (Superuser Do) make a symbolic link to the file to the BootCacheControl file found in /System/Library/Extensions/BootCache.kext/Contents/Resources/ and place the symlink in: /usr/sbin/BootCacheControl

Now you know where that symlink was created you can simply open the folder by using the Finder's GO Menu command 'Go to Folder' and enter /usr/sbin/ in the search field and delete the BootCacheControl file from there. or alternatively:

sudo rm -iv /usr/sbin/BootCacheControl
Which will remove a file (showing the removal and asking for confirmation to remove)

[ Reply to This | # ]
Use Caution
Authored by: webbix on Jan 17, '04 11:13:22PM

That helps explain some things for me (maybe). I wondered why I could not boot from my external FW drives. I BU using psync and usually reboot from the external to make sure it is working. It has not. I have a couple of different FW drives so I thought that may be it. I need to 'undo' the fix; applied via command line on my TiBook but with 'SpeedStart' on my Cube and iBook (could not find the source of the original fix even with Google).

I was beginning to think that Apple had replaced booting from external in 10.3 with the diskutility 'restore' option after booting from Installer. I had not had a chance to check the Apple site to verify. One peculiar thing though, I could not boot my 10.2.8 iBook with the 10.3 BU either so maybe it is affected on the BU volume also. Anyone have any clarification or am I on the right track?



[ Reply to This | # ]