This guide is made based on an Acer Aspire 5315, but will probably work on other machines with a hidden eisa rescue partition.
This is for everyone who has got problems unhiding and accessing the hidden rescue partition, and have tried all the methods with d2d disabling and changing partition type, perhaps with partedit32 or ptedit32, only to find out that nothing has happened after rebooting.
Download and install "Diskpart" from Microsoft, a small but powerful textbased utility, the link below is a direct download:
Here's the step by step to succeed...
Press "win + r" to bring up the run window
Type: "cmd", to bring up the command window
Type: "diskpart", a new command window pops up with a "Diskpart >" prompt
Type: "rescan", a configuration check runs
Type: "list disk", a list of the availible disks appears
Type: "select disk 0", if your hidden partition resides on that disk of course
Type: "list partition", to find out with partition is your hidden one (probably about 10 gb and without name)
Type: "select partition 1", if that is your hidden partition
Type: "detail partition", here you will see the partition type, take a note of that so that you can reset it to the original if needed.
If your partition type = 27 you should enter id=07 in the step below, if type = 12 enter id=0B in the step below.
Type: "set id=07 override", where 07 is the numb