Thread: OS9.1 Checksum
12-11-2003, 10:30 PM #1g4n00bGuestOS9.1 Checksum - Installation Tome
I downloaded OS9.1 North American English, four times (4x) and it fails the checksum every time. Then I d/l OS9.1 International and its fine. Same with Italian.
I finally decided to SKIP CHECKSUM process and install regardless. I get the error, could not find "Installation Tome".
12-12-2003, 01:58 AM #2g4n00bGuestFixed
Thanks to Google + Internet, and then MacFixItForums and Appletechs for the answer. In case anyone else has this problem, and happens to find this post through a search. The problem may be corrupt data in your Mac's PRAM. Flash the Mac PRAM by retarting while holding the keys :
COMMAND(Apple Key) + OPTION + P + R
upon restarting your Mac. You will see a flash/flicker of the screen before the Mac logo appears, and then the the Startup Beep/Sound again, at which point you can release the keys. I downloaded the OS9.1 updater again (this may not be necessary) and this time no checksum nor Installation Tome Error. The Update ran perfect.
Although I have not tried this, apparently you can "deep reset" the NVRAM and PRAM by using OPEN FIRMWARE upon restart with the keystroke combo:
COMMAND + OPTION + O + F
and then issuing a:
The site says dont screw around issuing random OPEN FIRMEWARE commands if you don't know what you are doing, or you may F up your hardware. The above two (2) commands are supposed to be safe but other than that exercise caution.
See the following links:
12-12-2003, 10:17 AM #3
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