I'm wondering if there are known problems when partitioning 32GB (Class 10) microSD cards with multiple partitions?
I'm asking because I have the same problem with two 32GB cards from different vendors. I wanted to replace the 16GB Class 2 card I'm using in my HTC Desire for A2SD (M2SD to be exact) with a 32GB Class 10.
First I bought a Transcend 32GB Class 10 and partitioned it like
1. fat32 (30750MB)
2. ext3 (1000MB)
3. swap (250MB)
I had this setup running a few days when I noticed strange behaviour and sudden application crashes. In the output of dmesg I could see I/O errors when accessing the SD card. The SD card mount points where then mounted read-only (which caused the applications to crash).
I thought the card was broken and bought a new one (also 32GB Class 10) by SanDisk. I partitioned this card the same way as before and while copying backups from the first card onto the new one (on a PC) there were again I/O errors on the new card.
Either I have very bad luck or there are known problems when partitioning 32GB microSDs with multiple partitions? For the record I didn't have any problems with the old 16GB card (it had a fat32 and ext3 partition).
What's strange however is that when the 32GB card has only one fat32 partition (the default so to say) there were no errors when copying some dummy data onto it.
I'm asking because I have the same problem with two 32GB cards from different vendors. I wanted to replace the 16GB Class 2 card I'm using in my HTC Desire for A2SD (M2SD to be exact) with a 32GB Class 10.
First I bought a Transcend 32GB Class 10 and partitioned it like
1. fat32 (30750MB)
2. ext3 (1000MB)
3. swap (250MB)
I had this setup running a few days when I noticed strange behaviour and sudden application crashes. In the output of dmesg I could see I/O errors when accessing the SD card. The SD card mount points where then mounted read-only (which caused the applications to crash).
I thought the card was broken and bought a new one (also 32GB Class 10) by SanDisk. I partitioned this card the same way as before and while copying backups from the first card onto the new one (on a PC) there were again I/O errors on the new card.
Either I have very bad luck or there are known problems when partitioning 32GB microSDs with multiple partitions? For the record I didn't have any problems with the old 16GB card (it had a fat32 and ext3 partition).
What's strange however is that when the 32GB card has only one fat32 partition (the default so to say) there were no errors when copying some dummy data onto it.
