iMac (21.5-inch, Late 2009) Symptom Charts — Mass Storage 57
2010-11-18
6. Reseat hard drive SATA cable
at logic board and hard drive
connections, and verify if
computer starts up.
Yes Go to step 8.
No Replace SATA cable.
Go to step 8.
X03
7. Test with known-good
bootable hard drive. Verify if
system boots successfully and
that Disk Utility “Verify” function
reports no errors.
Yes Install user’s hard drive.
Go to step 9.
No SATA cable veried or
replaced and known-good
hard drive installed. Replace
logic board. Go to step 1.
8. Reboot computer. Verify if
system boots successfully and
that Disk Utility “Verify” function
reports no errors.
Yes Issue resolved. Return system
to user.
No Go to step 7.
9. Reboot computer. Verify if
system boots successfully and
that Disk Utility “Verify” function
reports no errors.
Yes Issue resolved.
No User’s hard drive appears to
be defective. Go to step 10.
10. Replace hard drive. Boot from
system-specic Install DVD
and reinstall Mac OS X with
drive format option. Verify if
drive is formatted correctly
(GUID partition table) and that
software restore was successful.
Yes Issue resolved by replacing
hard drive.
H01
No SATA cable veried/replaced
and new hard drive installed,
Check with known-good
restore DVD. If restore failure
still happens, go to step 11.
11. If restore is unsuccessful,
startup a known-good system
in Target Disk Mode and
connect it to the user’s system
with a FireWire cable. Once
set up, insert the iMac Install
Disc in its optical drive. Startup
user’s system while holding
Option key, select and boot
from the Install Disc DVD
and restore system software.
Verify if software restore was
successful.
Yes Restore failure seems to be
due to internal optical drive
or media issue. Go to Optical
Drive Read/Write Error
symptom ow.
No Restore failure seems to be
due to internal SATA bus
issue. Replace logic board.
M19