Difference between revisions of "SD compatibility list"
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Note: always measure read speed with this command: | Note: always measure read speed with this command: | ||
| + | * in left slot: '''dd if=/dev/mmcblk0 of=/dev/null bs=4MiB count=100''' | ||
| + | * in right slot: '''dd if=/dev/mmcblk1 of=/dev/null bs=4MiB count=100''' | ||
| − | + | If you can afford '''''destroying''''' all your data, you can test write speed. But be careful, you will need to create a new partition table, afterwards! You can use [http://www.gp32x.com/board/index.php?/topic/56915-gparted/ Gparted] for that. | |
| − | + | * in left slot: # '''dd if=/dev/zero of=/dev/mmcblk0 bs=4MiB count=100''' | |
| − | + | * in right slot: # '''dd if=/dev/zero of=/dev/mmcblk1 bs=4MiB count=100''' | |
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| − | in left slot: | ||
| − | * '''dd if=/dev/zero of=/dev/ | ||
Revision as of 16:07, 24 March 2011
Note: always measure read speed with this command:
- in left slot: dd if=/dev/mmcblk0 of=/dev/null bs=4MiB count=100
- in right slot: dd if=/dev/mmcblk1 of=/dev/null bs=4MiB count=100
If you can afford destroying all your data, you can test write speed. But be careful, you will need to create a new partition table, afterwards! You can use Gparted for that.
- in left slot: # dd if=/dev/zero of=/dev/mmcblk0 bs=4MiB count=100
- in right slot: # dd if=/dev/zero of=/dev/mmcblk1 bs=4MiB count=100
| SDHC card brand | Card size | Card class | Full name | URL | fat32 is working? | ext2/3/4 are working? | read speed MB/sec | write speed MB/sec | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Kingston | 32GB | 10 | class 10, kingston 32GB (red) | http://images.google.com/images?q=class+10+kingston+32GB like this, but 32GB: http://www.komputronik.pl/index.php/product/101490/Sprzet_komputerowy/Podzespoly_PC/Secure_Digital_16GB_Kingston_High_Capacity_Class_10.html | yes | no | 15.2 | 12.4 | doesn't have badblocks, seems that "Flash Translation Layer" is not suitable for ext filesystems |
| Pretec | 32GB | 10 | class 10, Pretec 32GB 233x (white/green) | http://images.google.com/images?q=class+10+pretec+32GB+233x | yes | no | 14.1 | ? | doesn't have badblocks, seems that "Flash Translation Layer" is not suitable for ext filesystems |
| Kingston | 1GB | unknown | Kingston 1GB (blue) | looks very similar to this one, except that I have 1GB: http://www.komputronik.pl/index.php/product/26645/Sprzet_komputerowy/Podzespoly_PC/Secure_Digital_2GB_Kingston.html | yes | yes | 12.5 | ? | ok |
| Pretec | 4GB | 10 | Class 10, Pretec 4GB, 233x (white/green) | http://images.google.com/images?q=class+10+pretec+4GB+233x | yes | yes - I had very few fsck problems, and after several tries running fsck, they eventually got corrected. | 14.0 | ? | It looks very similar to that broken 32GB pretec. Except that this one almost works good. |
