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I was trying to run the built-in system recovery software to get the OS system back to the out-of-box, factory state for my TOSHIBA SATELLITE L510. The power was accidently off when the software try to partition the harddisk. I try the rerun the recovery software and Windows installation disk. Both of them could not find the partition of the harddisk. Anyone knows how can I solve this problem ?

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If you made (full) recovery CDs or DVDs of the recovery partition, then the safest route is to use a utility to zero out the first track of the drive (WD and Seagate have utility CDs), then install the recovery partition and let it rebuild the drive. There may be a better/faster solution, but first you'll have to provide a lot more detail as to what you have tried and what responses you saw. – sawdust Aug 29 '11 at 23:48
    
Another reason to have the battery installed and fully charged when recovering. – Moab Aug 30 '11 at 0:33
    
Even better is to have battery installed and the AC adapter plugged in when recovering. – Windos Aug 30 '11 at 1:24
    
As I don't have recovery CDs or DVDs, I have to find another way. Ming – Ming Aug 30 '11 at 4:32

I tried to install Windows XP but could not find the partition. I then tried to install Windows 7 and could see the partition!

After installing Windows 7, I could run the built-in recovery software to recover the built in OS again.

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Smells like SATA AHCI - Windows XP needs drivers from floppy for that. – Turbo J Sep 2 '11 at 5:50

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