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HP 50g & SD Cards: Performance, Format, Notes
08-10-2016, 10:08 PM
Post: #57
RE: HP 50g & SD Cards: Performance, Format, Notes
(08-10-2016 01:46 PM)JDW Wrote:  
(08-09-2016 06:37 PM)Claudio L. Wrote:  Did you check the cluster size on the other card? If you formatted with the same utility, then it should be at 4kbytes. If that's true, your 256 MB card has a FAT 4 times bigger than the other one, yet still starts in the same amount of time? (head scratching...)

My other card was the 256MB SD (1 partition of 256MB). Here's the data on that card as per the Terminal:

File System Personality: MS-DOS FAT16
Type (Bundle): msdos
Name (User Visible): MS-DOS (FAT16)

Partition Type: DOS_FAT_16

Total Size: 255.0 MB (255014400 Bytes) (exactly 498075 512-Byte-Units)
Volume Free Space: 254.8 MB (254754816 Bytes) (exactly 497568 512-Byte-Units)
Device Block Size: 512 Bytes
Allocation Block Size: 16384 Bytes


32 MB divided by 2k/clusters = 16k clusters
256 MB divided by 16k/clusters = 16k clusters

so my assumption that both took similar time because both FAT tables were about the same size was correct, now the universe makes sense again.
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RE: HP 50g & SD Cards: Performance, Format, Notes - Claudio L. - 08-10-2016 10:08 PM

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