I've bought a micro SD card and it reads differently every time:
*it was not mounted even the hardware read-only switch was on (SD card adapter).
** don't think /dev/sda is my harddrive.
I've though if there is a damaged sector (or more than one) it won't be able to write correctly. But it will read the same so the checksums will match. I've tried multiple card readers. Or is this fake card which gives random data? It can't even make new partition table and file system.
I've bought 2 x 128MB micro SD cards from aliexpress. Both act the same. I know they can be used, sanded, "recycled" and sold as new. I am fine with that I just want a small SD card to put one mp3 file for my phone.
It looks so strange for me or this is typical for damaged SD card? Can this be related to the so small size (128MB)? Something incompatible?
Bash:
% for i in {1..10}; do sudo sha256sum /dev/sda; done
c066195ad1c5cec4d2b968287a6ec05318f46890f18f31b4a5ed805a1a0db27e /dev/sda
0eb9b1f88f9d91ebe2fcddf4e9ff28669c5fc311c46ba82e41196704f0a93a86 /dev/sda
b64c6bbc61e3e383a91513f0e352c7569d69d92981778519feec5a4d8a537612 /dev/sda
6cc23f610cb4a4b4b6a4559f4371cd1e0fa47cbb4cfe2807884690f49871622a /dev/sda
f9054883a25157bf48a785b445199b100976129718a90f9cb6b9022034fb2df4 /dev/sda
e4696bec314352d9508576606d942b149723e13bd4185cac66287d5fde9deaf1 /dev/sda
749e2d81f019600eedbb2e0dcb0f1680942ec00c42e636ab3cf4f5acfebff3d0 /dev/sda
27a37e636b3279931db3df6bf68ae8d6d6a4f1802b7db68ddfeb39949219e5c7 /dev/sda
4b01d013fa09279aa7096e9d30895fa0f62364f0abe259b276c547cd74bd396d /dev/sda
f7977bc8723cf5d78171f2dc85628ea872becb75b5f5a513c99d169205c0ff21 /dev/sda
** don't think /dev/sda is my harddrive.
I've though if there is a damaged sector (or more than one) it won't be able to write correctly. But it will read the same so the checksums will match. I've tried multiple card readers. Or is this fake card which gives random data? It can't even make new partition table and file system.
I've bought 2 x 128MB micro SD cards from aliexpress. Both act the same. I know they can be used, sanded, "recycled" and sold as new. I am fine with that I just want a small SD card to put one mp3 file for my phone.
It looks so strange for me or this is typical for damaged SD card? Can this be related to the so small size (128MB)? Something incompatible?
Last edited: