First you will want to reset the BIOS to default settings, to do this, go to: When you’re finished here, press Esc to exit and choose Save/Exit.
After this is all setup, you can go on and insert the Boot-132 CD that you burned earlier, restart your Inspiron and press F12 for the boot menu, then select your DVD drive to boot. Wait until the DVD drive stops spinning to make sure Chameleon has fully loaded, then eject your Boot-132 CD and insert the Snow Leopard DVD.
Most Inspirons come with a hard disk smaller than 500GB, so you could easily pick up a 500GB or greater sized external hard disk, and backup all of your stuff to that.Now I'm trying to update from the command line using ), I could see the program's progress in terms of percentages. After this ran and I restarted, I was able to successfully run Software Update, from the command line or the GUI; it now tells me that there is no new software to install.Before doing this, I did check for I/O errors as @Seth Noble suggested, then run the utilities that @Stephen suggested.If you’ve currently got Windows XP on your Inspiron 1525, you might not have AHCI enabled for your hard disk drive.Boot your Inspiron while pressing the F2 key repeatedly, until you are greeted by the BIOS menu.
I would recommend backing up this file in case anything happens.