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To: freebsd-questions@freebsd.org
From: Petri Ojala <ojala@iki.fi>
Date: Fri, 19 May 2006 01:38:40 +0300
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Subject: 300G PATA disk identified as 131G
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Generic PC running FreeBSD 5.4, the PATA controller is an inexpensive  
2-port controller from Adaptec.  Showing:

atapci0: <HighPoint HPT370 UDMA100 controller> port 0xa000-0xa0ff, 
0x9c00-0x9c03,0x9800-0x9807,0x9400-0x9403,0x9000-0x9007 irq 11 at  
device 1.0 on pci2
ata2: channel #0 on atapci0
ata3: channel #1 on atapci0

ad4: 238475MB <ST3250824A/3.AAE> [484521/16/63] at ata2-master UDMA100
ad6: 238475MB <ST3250824A/3.AAE> [484521/16/63] at ata3-master UDMA100
ad7: 131071MB <ST3300831A/3.06> [266302/16/63] at ata3-slave UDMA100

The machine has four 250G disks working just fine.  I added a new  
ST3300831 300G 7200.8 disk and it's showing like it wouldn't do lba48.

atacontrol is showing that lba48 is supported:

ATA channel 3, Slave, device ad7:

Protocol              ATA/ATAPI revision 7
device model          ST3300831A
serial number         5NF1SVQQ
firmware revision     3.06
cylinders             16383
heads                 16
sectors/track         63
lba supported         268433408 sectors
lba48 supported       268433408 sectors
dma supported
overlap not supported

Feature                      Support  Enable    Value   Vendor
write cache                    yes      yes
read ahead                     yes      yes
dma queued                     no       no      0/0x00
SMART                          yes      yes
microcode download             yes      yes
security                       yes      no
power management               yes      yes
advanced power management      no       no      65278/0xFEFE
automatic acoustic management  no       no      0/0x00  128/0x80

(And the 250G disk in the same channel but as master disk:

ATA channel 3, Master, device ad6:

Protocol              ATA/ATAPI revision 7
device model          ST3250824A
serial number         4ND23HXN
firmware revision     3.AAE
cylinders             16383
heads                 16
sectors/track         63
lba supported         268435455 sectors
lba48 supported       488397168 sectors
dma supported
overlap not supported

Feature                      Support  Enable    Value   Vendor
write cache                    yes      yes
read ahead                     yes      yes
dma queued                     no       no      0/0x00
SMART                          yes      yes
microcode download             yes      yes
security                       yes      no
power management               yes      yes
advanced power management      no       no      65278/0xFEFE
automatic acoustic management  no       no      0/0x00  208/0xD0
)

Any ideas why the 300G disk isn't working?  I couldn't find any  
references to issues with >250G disks.

Petri