Currently Being ModeratedMar 6, 2013 6:45 AM (in response to Jonathan Hercock)
Check the S.M.A.R.T. status of the HD in Disk Utility, if it's not verified then it's failing. Backup IMMEDIATELY and plan to replace the HD. Also run DU from the Restore Partition of Mountain Lion and run Repair Disk, if any errors appear after running it 2 times get the HD replaced. Finally run Apple Hardware Test in EXTENDED MODE at least 2-3 times in succession, if any errors appear immediately take the machine in for repair.
Currently Being ModeratedMar 6, 2013 7:08 AM (in response to rkaufmann87)
thanks for your swift reply.
The SMART status is OK
DU from ML solves the errors
Apple Hardware Test in Ext Mode informs me:
Are you please able to interpret that.........maybe a RAM problem from a quick internet search?
Grateful thanks. J
Currently Being ModeratedMar 6, 2013 8:01 AM (in response to Jonathan Hercock)
If you do find your HD is failing under S.M.A.R.T. status you might consider a SSD instead of a regular platter drive. I have the 2.66.model of the same year and my SSD has given my old platform new legs. It is fast and responsive and all my data/storage is now on an external Firewire drive in a hot swappable cradle. By installing a SSD you will decrease the internal temps of the system and probably extend the life of the system. If it were my system I would put 6GB of RAM into it with a 240GB SSD. You can only get a 1.5 Gbs Link Speed but it is so much of an improvement over the HD you will not be looking for a newer/faster model. Mine rocks!!!!
Currently Being ModeratedMar 6, 2013 9:13 AM (in response to rkaufmann87)
Many thanks, here is an update.....I think we have solved 1 problem and uncovered a second.
I have 2 RAM, original 1GB and an additional 2GB Corsair inserted about 6 months ago.
I switched the RAM around and ran Apple Hardware Test (extended mode), it gave the same error code as before, with the exception of the last group of digits.
I took out the 2GB RAM.
I then left inserted only the 1GB original RAM and ran Apple Hardware Test (extended mode - twice) it passed first time and then gave error: 4MOT/1/40000003: HDD - 1341.
Then I switched the 1GB RAM to the other Dimm and ran Apple Hardware Test (extended mode) wich detected error 4MOT/1/40000003: HDD - 1 407
Next I inserted only the 2GB RAM and ran Apple Hardware Test (extended mode) which gave error:
The above reults indicate to me that:
The 2GB RAM is failing.
There is a problem with the HDD fan. (4MOT/1/400000003: HDD error code - net serch info).
For now I have reseated both RAM (as ML requires 2GB min), and I need to use the iMac.
Requested a replacement 2GB RAM from the vendor.
Would welcome any thoughts you may have on the 4MOT HDD.
I live in Rio, yesterday it was 38C and real feel of 47C - so running hot would not be a surprise.
Once again, many thanks for your kind consideration.
PS - Please post a reply as I should have clicked solved my problem for the RAM suggestion. Tks.
Yep, that would be a joy. Budgetary constraints will dictate otherwise. Living in Brazil parts are at least twice the price of the USA.
I am fairly sure that 4GB RAM is all my early 2008 20" will handle, but will be happily informed otherwise.
Currently Being ModeratedMar 12, 2013 7:51 AM (in response to rkaufmann87)
Update on the RAM. The iMac is running well, using just the original 1GB RAM,(10.8.2) whilst I wait for the replacement.
Many thanks to rkaufmann 87.
I am ignoring the 4MOT HDD error for now, as everything appears to be stable.