I'm using an Acer Aspire 5742g. It is under warranty, but by mistake I had deleted the recovery partition on the hard disk, which was around about 13-14 GB in size.
I had created recovery discs before, but they are not running now. I think they are corrupted.
How can I restore the OS? Is there are any ways to download those discs?
If you acquire a copy of whichever retail, as opposed to OEM, Windows version – presumably in this case Windows 7 Home Premium, and probably 64-bit – you can reinstall using that.
Then, install the correct drivers for your model. If you also made the drivers and apps disc, run that; if not download them from the Acer Support site for your model.
Probably most people would think this is advocating piracy, but it is the key that matters, not the media. There is nothing untoward about downloading an unadulterated copy of Windows that requires a key to work properly and using your own key to activate it! If it was the wrong key for the media, it wouldn't be accepted.
The key on the bottom of the laptop will work, though a handy tip is while the original installation is still running, to find the key currently in use (the one Acer use when they install Windows at the factory, and which doesn't need activating Belarc Advisor will do this. If one of the keys – either the factory installation key or the one on the bottom of the laptop – doesn't work, the other one will.
You can find the copy of Windows at torrent sites, the trick being to identify the copy you require at the MSDN download portal, where they give the hashes, then Google the SHA1 hash to find the claimed unaltered torrent and compare it once downloaded.
If it matches, it's just as it came from Microsoft and safe to burn to DVD and install. A freeware called HashTab is an excellent easy-to-use tool for doing the comparison with.
I have an Acer Aspire One D250 netbook, who originaly comes with Windows XP.
I will install Windows 7 on it, but before I like do create the Factory Recover Disk.
The netbook don't have CD drive and, the Acer program used to make the disks, called Acer eRecovery Management, only can create the its using a external CD/DVD Writer. The program message is Unable to detect a writable optical drive.
I dont't have an external CD drive and don't have Acer support in my country to ask for the disks. I think the best solution is make the Acer program write the disk on HD as a CD/DVD image so I can copy it to my desktop and burn it.
Someone has any idea on how I can create these Factory Recover disks?
Foregoing the optical disk route, you might try getting an external hard drive that connects via USB. No need to get fancy - you can use a naked drive with a $20 adapter. Then, get a hard drive cloning program - I personally like Acronis True Image. This will allow you to clone your existing drive to the other drive, or store an image of the existing drive, that you can use the software to restore later.
As an aside: Are you sure the netbook has the required power to run Windows 7?
If you had an external usb drive you could try creating a virtual CD on the usb drive and create the system restore disk that way then use another PC to copy it onto actual media.
Took me a while to find a suitable tool, but I did find one in the end: Virtual CD. It's made by H+H Software GmbH.
Windows sees it as a BluRay-RW drive and you can configure the software to 'insert' a virtual blank disk (you get the choice of basically every type of disk, eg. CD-R/CD-RW/DVD+R/DVD-R/BluRay-R/etc.) the software then pumps out anything sent to it into an ISO.
The personal version comes with a 30-day free demo which seems fully functional and does the trick.
I had the same requirement so I could burn the Acer backup recovery disc's on a netbook that was failing in recognising nay external burners.
The program that worked like a charm was http://www.phantom-drive.com/en/default.htm
I hope this helps other out as I took ages to find it.
Acer eRecovery doesn't work with mapped drives.
Try conecting your desktop/laptop DVD unit as a network DVD in the Acer Netbook (Map the drive). Then run the Acer Recovery Management utility again.
Use a DVD writer emulator.
Using Google, I found one that was free. It emulates a DVD burner and makes an ISO.
Plug in a USB key and copy the .isos (there are 2 ISOs), then make a bootable USB key (8GB) and put these ISOs on it.
Use a manual to integrate. I've found some to make a boot USB pendrive with ISOs booteable to recover.