TI中文支持网DM8168 evm板子，使用sata的1,2口，并没有使用扩展口。连接硬盘。报错如下LOG：
scsi0 : ahci_platform
scsi1 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x4a140000-0x4a150fff] port 0x100 irq 16
ata2: SATA max UDMA/133 irq_stat 0x00400040, connection status changed irq 16
PHY: 0:01 – Link is Up – 100/Full
ata1: SATA link down (SStatus 0 SControl 300)
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2: link online but 1 devices misclassified, retrying
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: qc timeout (cmd 0xec)
ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2: link online but 1 devices misclassified, retrying
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2: link online but 1 devices misclassified, retrying
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: qc timeout (cmd 0xec)
ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata2: limiting SATA link speed to 1.5 Gbps
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2.00: qc timeout (cmd 0xec)
ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2: link online but 1 devices misclassified, retrying
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2: link online but 1 devices misclassified, retrying
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
请问有经验的朋友或者管理员，这是什么原因？
Chris Meng：
你好，
请问你的硬盘是Gen2还是Gen3的？
能否尝试一下git上最新的驱动？http://arago-project.org/git/projects/?p=linux-omap3.git;a=summary
yueping Tian：
回复 Chris Meng:
我也遇到了同样的问题， 怎么更新驱动啊, 给的链接东东太多了，请具体点。 谢谢啊。
我的软件是dvrrdk4.0
Eason Wang：
回复 yueping Tian:
遇到硬盘识别方面的问题，有几点需要确认：
1. 是Gen2/3, 还是e-SATA ?
2. 测了几款硬盘，容量和接口分别是什么？
3. 提供完整的启动log
DVRRDK 4.0 应该已经是最新的驱动了
yueping Tian：
回复 Eason Wang:
你好！
是Ｓata。
出错的硬盘重新格式化后可以识别了， 但ntfs格式 无法写入，
mount命令：
/dev/sda2 on /media/sda2 type ntfs (rw,relatime,uid=0,gid=0,fmask=0177,dmask=077,nls=utf8,errors=continue,mft_zone_multiplier=1)
time dd if=/dev/zero of=/media/sda2/test.dbf bs=8k count=30 命令dd: can't open '/media/sda2/test.dbf': Permission denied
Louis：
回复 yueping Tian:
从“dd: can't open '/media/sda2/test.dbf': Permission denied”的错误信息来看，似乎是权限不够。
weifeng liang：
你好，请问你的问题解决了吗？
