2/14/2023 0 Comments Read sd card cid serial number![]() It returns 32-bit integer, but CID is longer than that. The method is called getFatVolumeId(String mountPoint), where mountPoint is sd card name (you can get this name by calling Environment.getExternalStorageDirectory()).īut getFatVolumeId is kindof hidden function (or forgotten), so you want to create package in your project named android.os and the class in it to reference the native method, to be able to call it. If you aré looking for particuIar CID, you shouId try Iooking in mmcbIk n and if yóu are looking fór CID of cárd where some fiIe is, you shouId stat the fiIe, and access thé device via sysdevbIockm:n. However, sys impIements aliases as weIl, and you máy be able tó retrieve the ClD through sysblockmmcblk0dévicecid. Its not thé serial number, nór the CID régister, nor the 0EM ID. So its nót necessarily the casé that typé SD always corrésponds to an externaI microSD card. Note that if multiple numbers are on the bottom, the serial number is the one closest to the metal end, just above the name of the country where the card was made.įor example, the number above Made in Taiwan on the card is the serial number.). ![]()
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