iMac (27-inch, Mid 2010) Symptom Charts — Mass Storage 73
2010-09-09
3. With user’s permission, erase
internal drive(s) containing Mac
OS X, and reinstall it. Verify if
installation process completes.
Yes Go to step 6.
No Go to step 4.
4. Inspect internal drive(s) SATA
power and data cables and
connectors for bent pins, or
other damage to the cable.
Yes Replace damaged cable.
Go to step 6.
H04
No Go to step 5.
5. Reseat SATA cable on internal
drive(s) and logic board. Verify
if computer starts up.
Yes Go to step 6.
No Replace internal drive(s) SATA
data cable. Go to step 6.
H04
6. Reboot computer. Verify if
system boots successfully and
Disk Utility “Verify” function
reports no errors.
Yes Issue resolved.
No Go to step 7.
7. Test with known-good
bootable drive. Verify if system
boots successfully and Disk
Utility “Verify” function reports
no errors.
Yes Reinstall user’s drive, go to
step 8.
No SATA data cables veried or
replaced and known-good
drive installed used without
success. Replace logic board.
M19
8. Reboot computer. Verify if
system boots successfully and
that Disk Utility “Verify” function
reports no errors.
Yes Issue resolved.
No User’s drive appears to be
defective. Go to step 9.
9. Replace user’s drive. Verify if
drive formats correctly with a
GUID partition map and installs
Mac OS without errors.
Yes Issue resolved by replacing
user’s drive.
H03
No SATA data cable veried or
replaced and new drive did
not resolve issue. Replace
logic board.
M19