How to delete CD ROM on Android

You can't delete folders, only the files inside!

First of all, there is a file manager is ES file manager,The three options of root settings are checked,Enter the root directory, which is the phone memory,This time the target is the two folders of data and mnt,Advanced data。 There's a dalvik-cache folder inside.,This is the application cache.,The cache may still be here after the things that have been installed before.,The files inside can be deleted at will.,There is a tutorial to transfer the dalvik-cache to the memory card.,If you're interested, you can take a look.,It should be noted that it's best to restart it after deletion.,Otherwise, some applications that delete the cache by mistake will fc when they are opened.,There's also a local folder in the data with a tmp folder, Some apps that have been deleted will sometimes be here.

Let's talk about the mnt folder, this is the folder of the application installed on the memory card, which has asec and secure asec, sometimes the application that has been deleted will have remnants here, pay attention to the application you need when deleting, this can only be done slowly, so that you can try to free up the memory of the phone!

I don't have a phone with the corresponding model on hand, but try it for reference:

You can replace the ISO file with whatever you want in ISO format.

What is the rate of birds for? I don't understand.

Answering questions is just hoping to help others.

At present, a considerable number of users in China are still using non-genuine CDs, so the fault tolerance of optical drives has received widespread attention. However, one-sided emphasis on the fault tolerance of optical drives is also incomplete. At present, the performance of Japanese optical drives on the market is stable, but the reading ability is average; The stability of Korean products is poor, and the ability to read disks is strong; Taiwan's products have stronger reading ability than Japanese products, but slightly worse than Korean products, and their stable performance is better than that of Korean products; Singaporean products have better reading ability than Japanese products, but lower than Korean and Taiwanese products.

The ability to read the disk was very good when the products of some domestic manufacturers were first used, but the fault tolerance decreased significantly after a few months, so we should consider the fault tolerance comprehensively. A drive is a device used to read data on a disk, which looks the same as a CD ROM drive. The drive is fully compatible with the now popular VCD, CD ROM, CD R, CD AUDIO and other formats, while ordinary CD ROM drives cannot read discs in *** format.

ROM adopts new technologies such as track width and bit high-density recording line, and the capacity of single-sided single-layer is single-sided double-layer, and double-sided double-layer can reach 17G mass storage. Judging from the current situation, *** is still limited to watching video discs, and it is still very rare for computer software to use *** as a carrier. Due to the current 5 6 times the speed of the *** drive (when reading ordinary discs, the speed is equivalent to 24 32 times the speed)** in more than 1000 yuan.

Therefore, unless specifically requested, users do not have to purchase *** ROM.

There's also a new product that's been talked about*** RAM that enables repeatable erases at a platter cost a few cents more than the current CD cost. At the same time, *** Zen Hongyou RAM also achieves low-cost backward compatibility. However, due to the high **, about 3000 yuan or more, it has not yet entered the ordinary family users.

PD is an abbreviated version of PHSAE Change Rewritable Optical Disk, which is a rewritable storage device stored by Panasonic using the phase change optical method (PHSAECHANGE), which is a kind of optical disc media drive with better performance and more stable operation than CD RW. The so-called "phase change light" mainly uses the phase change of the medium to record data.

PD drives run at a lower speed and are compatible with CD ROMs. With a dedicated PD disc, it can be rewritten about 500,000 times. The average addressing time of the PD is 89ms, the data transfer rate is 518 1141kb s, which is equivalent to an eight-speed optical drive, and the data transfer rate when writing and validating is 300 600kb s, which is equivalent to a four-speed optical drive.

In addition to being able to read and write PD discs, it can also be used as a regular eight-speed CD ROM.