See lock Icon when Option button is pressed at system start up

Question

iBook G4 12" 1.33 GHz

Model A1133

128 个问题查看全部

Stanley Smith @swsmith1971

声誉积分: 18

4

5

1

发帖于: 2011年1月4日

更多选项

See lock Icon when Option button is pressed at system start up

Having troubles trying to reload an iBook G4 12" (1.33 GHz 512MB, 40 GB HDD & DVD/CDRW).

When option button is pressed during the startup, a blue screen comes up with a lock icon, a progress bar, and a right arrow button.

Also during normal startup, instead of the normal apple logo, its a flashing square icon with a globe of the earth, then it goes to the regular folder icon and mac logo (the one that indicates there is no operating system) and pressing C at startup doesn't work either.

Anyone ever had this problem? Anyone know how to fix it?

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 0

1条评论

I just want to say, "Thanks for looking out for the rest of us, when we have a question". I was able to fix the problem (firmware password) and it turns out the solution was rj713's comment and the link he provided in regards to the mac mini. (http://www.macworld.com/article/145418/2...) All I did was add memory to the machine, then turned it on, during apple sound I held down command-option-p-r to reset the PRAM and voila, no more problem. Again thanks to everyone.

由 Stanley Smith 完成的 2011年4月4日

添加一条评论

4个答案

已选择的解决方案

mayer @mayer

声誉积分: 685.2千

MacHale Enterprises

3.4千

1.1千

2.6千

发帖于: 2011年1月4日

更多选项

You have locked the firmware (Master) Password. This can be turned off in System preferences but you will need to remember the password. You may also have activated it by turning on File Vault.

Use your original system installation disk and start up holding the "C" key down. If this fails, start it up in Target mode via firewire cable with another Mac and use Disk Utility and wipe the hard drive. Then start over with the system disk and install a new system. Please stay away from the master password.

这个答案有帮助吗？

是否

得分 3

3条评论:

The master password can be a real nasty bug. Before you pull the drive try changing the RAM configuration. You get one shot with each change. Try resetting the PRAM on the first change. Then change it back and try the Target.

由 mayer 完成的 2011年1月5日

mayer is correct--here is a link on the procedure. This one is a Mac Mini but the procedure is the same. +

http://www.macworld.com/article/145418/2...

由 rj713 完成的 2011年1月5日

I was afraid of that. Holding down C key doesn't work, neither does starting it up in target mode via firewire. I may have to pull hdd physically and connect to another mac to wipe drive. By the way, I didn't do this, a customer did this to their machine. I have to fix it.

由 Stanley Smith 完成的 2011年1月5日

添加一条评论

I just want to say, "Thanks for looking out for the rest of us, when we have a question". I was able to fix the problem (firmware password) and it turns out the solution was rj713's comment and the link he provided in regards to the mac mini. (http://www.macworld.com/article/145418/2...) All I did was add memory to the machine, then turned it on, during apple sound I held down command-option-p-r to reset the PRAM and voila, no more problem. Again thanks to everyone. — Stanley Smith
The master password can be a real nasty bug. Before you pull the drive try changing the RAM configuration. You get one shot with each change. Try resetting the PRAM on the first change. Then change it back and try the Target. — mayer
mayer is correct--here is a link on the procedure. This one is a Mac Mini but the procedure is the same. +

http://www.macworld.com/article/145418/2... — rj713
I was afraid of that. Holding down C key doesn't work, neither does starting it up in target mode via firewire. I may have to pull hdd physically and connect to another mac to wipe drive. By the way, I didn't do this, a customer did this to their machine. I have to fix it. — Stanley Smith

Geoff Hollingsworth @geoffholli18530 声誉积分: 1 1 1 · Answer 1 · 2014-02-02T15:40:32-07:00

Geoff Hollingsworth @geoffholli18530

声誉积分: 1

1

发帖于: 2014年2月2日

更多选项

I used this answer from Dan Frakes at Macworld. This worked for me on an Apple G4 iBook 1.07GHz model. I had just changed out the hard drive on this laptop that I bought off of eBay from a school district. Dan's solution: There’s a back door to firmware passwords: You can bypass the password by changing the amount of physical RAM inside the computer and then resetting PRAM during the first boot immediately after the RAM change. In other words, if you change the amount of RAM in a Mac, it will start up normally one time to give you a chance to reset the PRAM; if you don’t reset the PRAM during that boot, firmware-password protection will be restored the next time you boot.

这个答案有帮助吗？

是否

得分 0

添加一条评论

jenny10836 @jenny10836 声誉积分: 1 · Answer 2 · 2016-08-07T00:35:52-07:00

jenny10836 @jenny10836

声誉积分: 1

发帖于: 2016年8月7日

更多选项

so can you do anything if the firmware is re enabled at reboot?

这个答案有帮助吗？

是否

得分 0

1条评论:

What do you mean? If the drive is good and has a working OS on it after clearing the hardware password that should solve things (unless the drive was encrypted).

Heres the trick you'll need to clear the hardware password: The unbootable Mac mini this works across most of the older Mac's.

由 Dan 完成的 2016年8月7日

添加一条评论

Katherine Mauricio @katherinem78960 声誉积分: 1 1 · Answer 3 · 2018-08-20T15:03:21-07:00

Katherine Mauricio @katherinem78960

声誉积分: 1

1

发帖于: 2018年8月20日

更多选项

What did you have to do with this issue. I’m having the same problem

这个答案有帮助吗？

是否

得分 0

1条评论:

I used the solution that Mayer stated in the Chosen Solution above and it worked for my situation, however, rj713 provided the link to a more detailed "how to" that I followed and used to fix my problem.

由 Stanley Smith 完成的 2018年9月4日

添加一条评论

iBook G4 12" 1.33 GHz

See lock Icon when Option button is pressed at system start up

4个答案

添加你的答案