saving maps of copilot on a 1 GB CF which has 300MB space

gpasfan1002 · Occasional Visitor Joined: Jan 11, 2004 Posts: 13

Hi,
My question is can I save map data of copilot 4 on a 1GB CF card which has around 680 MB of data in it and has 300 MB of empty space? will that corrupt my existing data? whic is non map, its only large textbook.
Thamk you for answering

lbendlin · Posted: Mon Feb 23, 2004 8:37 pm Post subject:

sure you can

- use a card reader
- make sure your card is defragmented before you copy that big file over. This has multiple benefits - reads are faster, and the cells on the flash card don't get stressed that much
_________________
Lutz

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gpasfan1002 · Occasional Visitor Joined: Jan 11, 2004 Posts: 13

Thank you very much for the prompt reply. However, I thought fragmentation will actually delete the existing textbook which I intend to use in addition to the copilot. Is that possible? i.e defragmenting the Cf but retaining the textbook and adding the copilot? and if not is it possible to use both of them on the same CF taking into account that the size of the CF can accomodate both of them?

thank you once again

lbendlin · Posted: Mon Feb 23, 2004 11:37 pm Post subject:

You are confusing defragmentation with formatting.

Defragmentation: rearrange the blocks on your storage medium so files are stored in contiguous blocks and read operations can work faster. No data is lost.

Formatting: completely empty the table of contents (the FAT, File Allocation Table) so all iformation about the files on the storage medium is lost (the files themselves are still there, and can be recovered with special tools until you write to the storage medium again

What I wanted to add: defragmentation is not a very good process for Flash memory - for physical reasons. The number of write cycles is finite.
So instead of defragmenting you could do the following

- copy all data from the storage card to the desktop's hard disk (including your text file)
- reformat the storage card
- copy the map onto the storage card
- copy the data back (including the text file)

Same effect as defragmenting, but less stress for the storage card.
_________________
Lutz

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