DIGIT-ARC read-only archive · snapshot: July 23, 2026

Increase Your MMC Space

8 posts · originally from https://geek.digit.in/community/threads/increase-your-mmc-space.42503/

M
maina231 Original post #1
Nov 30, 2006 at 11:45 AM
Dudes check this out.

Your files in MMC are stored in multiple (disk) blocks.
So if you format using 16K block, the space used will be 16K eventhough your file is just 1K.

If you buy MMC, it is usually preformatted with 16K block. Therefore alot of space is wasted as most installed program files are usually less than 2K.

You will need a card reader to do this:-

1. Connect card reader and copy all your files in the MMC to computer disk. (Make sure you set the show all/hidden/os files to "on")

2. Do a format of the MMC using command line "format" and use the /A=size option.

Alternative, you can use the Disk Management in Adminstrative Tools to format. Make sure you select FAT. For 256MB MMC, smallest block you can use is 4K, 128MB is 2K, 64Mb is 1K and 32MB is 512B.

(Note: You cannot use the phone "format MMC" to do this as the format just clear the allocation table and does not change the block size)

3. Copy back all files to MMC.

Now you will find that you will have more space.
256mb MMC got back 30+ mbs :cool:
outlaw
outlaw #2
Nov 30, 2006 at 12:38 PM
hm... great info thanks

but i am not gonna try now

pls somebody pls try this and post feedback.....
azzu
azzu #3
Nov 30, 2006 at 12:39 PM
cool what to do with 512 mb??
dissel
dissel #4
Dec 1, 2006 at 4:28 AM
nice info...what the block size about 1GB as well as 512 MB ?

In my one phone i have 512 MicroSD....but it show the Capasity is 484 MB still the first day of purchasing(where is rest of 28 mb ?)...
Is it going to increase in this way and i got back 28 mb?
outlaw
outlaw #5
Dec 1, 2006 at 7:41 AM
^^^

yeah my 1 gb card shows only 979 mb
caleb
caleb #6
Dec 1, 2006 at 7:55 AM
outlaw said:
^^^

yeah my 1 gb card shows only 979 mb
Same here..I have 1GB SD card in my cellphone showing 979mb
hemant_mathur
Dec 1, 2006 at 1:35 PM
Nice info .. i'll try and post the results
R
REY619 #8
Dec 1, 2006 at 5:35 PM
I knew this long ago, and it doesnt work.