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#1
Win 7 Service Pack 1 installation fails - AND messes up drive letters!
I have been getting 'nag' messages from windows asking me to install SP1 almost ever since I got this laptop. The problem is, each time I try and run the installation, everything goes fine until the reboot (ie just after the 'configuring the service pack - do not switch off - 30% configured message' appears).
Then all I get is a black screen - nomatter how long I leave it. Indulging in the 'system repair' menus allows me to look at the command prompt and see what drives there are. Instead of c: (windows), D: (DVD drive), E: (data) and Q: (system) I get D:, F:, E:, C: respectively plus a new letter X: which appears to have an older version of windows and possibly some recovery stuff?
In all previous attempts, the only way out of this is to choose the system 'restore' option - which has always worked promptly - until today!
Looking around the internet, I have found a variety of suggestions and tried them nearly all. These include the following - with the results indicated:
1. Microsoft's own 'pre-update install' tools and hotfixes - no effect
2. Using 'diskpart' to assign the 'correct' drive letters when the first reboot fails - the letters fail to 'stick' and revert to the 'wrong' ones.
3. Using bootrec.exe to repair/replace/examin the MBR - no effect
4. Try 'startup/repair' at least three times - no effect
5. Microsoft support article http://support.microsoft.com/kb/927392 - no obvious change
6. Going via 'safe mode' - I get a 'failure configuring service pack - reverting changes - do not turn off computer message' - which then fails to 'revert the changes'!
After going through all these, today my computer didn't want to restore to its pre-sp1 update and reported errors. I ran chkdsk /r (as advised somewhere) - no dice. No 'safe mode'. :-( Finally I tried the 'last known good' option and things seem to be back to normal - except of course for that pesky 'service pack installation failed' message!
The only suggestions I haven't tried so far are:
a) detach card reader slot (there is a suggestion that this can mess up the disk letters) - interesting one this, but its not easy on a laptop. I used to repair these things and I know how easy it is to damage stuff just by taking the back off!
b) a couple of registry hacks involving the drive letters - reluctant to go this way cos I am not convinced it is necessary
So, dear readers, any more ideas?
I haven't actually found anyone anywhere reporting this same combination of service pack failure and drive letter mix up. Everyone else seems to have these as different problems. Mine however is reproducible - I must have gone round this loop half a dozen or more times over the last three years!
Shall I just abandon any hope of SP1?
TIA, Chris D