Kingston DataTraveler G3 (flash) in either the frontmost or rearmost USB port of a MacBookPro5,2 running OS X 10.8.2. No ZFS on this device:
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sh-3.2$ diskutil list disk7
/dev/disk7
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *15.9 GB disk7
1: EFI 209.7 MB disk7s1
2: Apple_HFS Mountain Lion template 14.4 GB disk7s2
3: Apple_Boot Recovery HD 650.0 MB disk7s3
When I unmount slice 2 then attempt to cat disk7:
- too long a pause by the end user, between diskutil unmount … and cat …, causes the cat-based command to silently fail.
If instead I act quickly, all blocks of the device are read without error. So I don't suspect an issue with the device.
Context: imaging a device. (More specifically: a .vdi of Mountain Lion to be used with VirtualBox without EFI.)
Current environment:
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DataTraveler G3:
Capacity: 15.88 GB (15,879,634,944 bytes)
Removable Media: Yes
Detachable Drive: Yes
BSD Name: disk7
Product ID: 0x1643
Vendor ID: 0x0951 (Kingston Technology Company)
Version: 1.00
Serial Number: 001CC0EC3504BBB1670D01C0
Speed: Up to 480 Mb/sec
Manufacturer: Kingston
Location ID: 0x24100000 / 4
Current Available (mA): 500
Current Required (mA): 200
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Not Supported
Why this topic in the ZEVO support forum?
For reference. Or to provoke thought about the ability of OS X (or its cat) to read from a device at certain times.
Meow.
An issue with firmware? I wonder.