Hp520(FH592AA), launched in 2008, motherboard chipset: I945M, CPU: Intel Core Dual-Core T5200, main frequency 1.6G, bus specification 533, memory capacity 1GB/DDRII, hard disk 120GB.
Lenovo thinkpadX60 was launched in 2006, with motherboard chipset: I945M, CPU: Intel Core dual-core T5500, main frequency: 1.66G, bus specification: 667, memory capacity: 5 12MB/DDRII, and hard disk: 80GB.
I put thinkpadX60 on it because I have questions about HP official website's answer! X60' s chipset, CPU model and main frequency, original memory capacity and model, and hard disk size are similar to those of hp520, but my X60 memory can be loaded with two 2GB/GGRII, and my hard disk can be upgraded to 500GB. However, the SATA mode of the hard disk was originally AHCI. After I put the 80G hard disk ghost into the 500G hard disk, it was blue when I entered the system. Later, I changed AHCI mode to compatible mode, and it still works normally (Dell changed to ATA, others).
One more thing, the original 80G hard disk GHOST needs an optical drive interface to switch to the hard disk bracket, and the 500G hard disk is installed on the optical drive and switched to the hard disk bracket to be a ghost, so that the 500G hard disk can be started, otherwise there is everything in the hard disk, but it can't be started! If the 80G and 500G hard disks are connected to the desktop GHOST, the 500G hard disk can be started normally on the desktop, but it still cannot be started on the notebook! If there is no CD-ROM drive-to-hard disk bracket, the 500G hard disk behind ghost can also be installed with winXP on drive C, so that winXP of the 500G hard disk can also be started normally.
The above is my experience in upgrading X60 for your reference.