Guralp Systems CMG-DM24 - Manual (Page 21)

Operator's guide
Güralp Systems can provide fully-tested, formatted disks with
FireWire and USB connectors. Alternatively, a third-party FireWire
disk may be used (although compatibility is not guaranteed).
To read a disk using gcfxtract:
1. Attach the disk to your computer. You can use FireWire,
USB, or any other interface supported by your computer and
the disk.
2. Run gcfxtract and select the required disk from the drop-
down list, then click Scan.
gcfxtract will scan the disk and display all the streams it
finds in the selection area below. For each stream, the Stream
ID and the number of blocks found are shown.
This operation requires roughly 12 Mb of available memory
for every Gb of space on the disk. If you have a very large
disk, your computer may have to use its hard disk to make
enough space. This will slow down scanning considerably.
3. By default, all streams containing more than 100 blocks are
selected for extraction. You can change which streams to
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