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Hello, I bought 3 used 100Gb Seagate momentus drives. All work fine on internal SATA in my PC.
I had one old USB to SATA external enclosure, but HDD's didn't work. Went on Aria PC and bought
one CIT and one Dynamode enclosure.
HDDs stil don't work - no drive works in in any enclosure.
How should I format an HDD to go into an external case? I tried NTFS and FAT 32 and exFAT and put
MBR on with Testdisk software.
Any help appreciated.
2014-10-12 09:12:30
try to use double-headed USB cable for additional power? There is a limit of how much power a single USB port can provide. 100 mA for USB up to 2.0 and 150 mA for USB 3.0.
2014-10-12 14:42:07
That is not entirely correct. Each USB Host Controller has a limit on power it can supply:5 units each 100 mA for USB up to 2.0 = 500 mA max.6 units each 150 mA for USB 3.0 = 900 mA max.Each USB Host controller is usually handling multiple USB ports on your computer. Therefor the units (or max. power) is shared across multiple USB ports.
2014-10-12 00:22:55
Since the drive appears to be working fine internal I guess it's an issue with it's controllers automatic power or acoustic management.Connect the drives to your computer internal and use a hard drive tool to deactivate/disable AAM/APM. If you don't have a tool you can use e.g. CrystalDiskInfo or HDD Scanhttp://crystalmark.info/software/CrystalDiskInfo/index-e.html* Functions > Advanced Features > AAM/APM controlhttp://hddscan.com/* New Task > Features > IDE featuresOnce the drives are working I would set the APM to 128 (80h).
2014-10-12 18:36:18
Thanks, I'll try that