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Old 04-03-2006, 04:17 PM   #1
eXeCuTioN
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wrong report on fat partition size


Hi!
Im having this problem, i have my 80 GB HD partitioned with 57
GB fat 32 lba partition, mandrake control center agrees , but
when i ask 'df' , it says i have 47, even the system says i
ran out of space (in fact i have 10 GB free)
So im wondering if i did something wrong or is there a way 2
solve this?
 
Old 04-03-2006, 05:27 PM   #2
Brian1
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Just to make sure you are reading it right use the command ' df -h '.
Not sure how much lose there is for a fat32 format. In ext3 unless options are changed its about 5% of the drive.

Brian1
 
Old 04-03-2006, 05:52 PM   #3
syg00
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umount and remount ???.
sync would probably do the job also, but affect more than just that partition.
 
Old 04-03-2006, 06:11 PM   #4
eXeCuTioN
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df -h returns:

Filesystem Size Used Avail Use% Mounted on
/dev/hda6 17G 13G 3.5G 79% /
/dev/hda1 47G 41G 6.3G 87% /mnt/win_c

and fdisk -l

Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 7455 59882256 c W95 FAT32 (LBA)
/dev/hda2 7456 9729 18265905 5 Extended
/dev/hda5 7456 7520 522081 82 Linux swap / Solaris
/dev/hda6 7521 9729 17743761 83 Linux


Thats what makes me wonder
 
Old 04-03-2006, 07:18 PM   #5
Brian1
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A lot depends on cluster size used on the fat32 format. I just can't find the right page that has the answer for you. I have seen 32 gig partitions end up with less than 30 gig available space. About 3 gig lost for 30 gig. The 10gig lost on the 57 gig might seem large but may not. As far as the clusters go say you use 4k clusters. A file that is 4k -1byte will fill a 4k cluster. A file that is 5k will take up 8k with a lose of 3k of available space. Next file is 7k. first it can not use the lost space in the previous cluster so it starts a new one. So now agian a 7k uses 8k of drive space. Changing cluster size can gain space but only so mant cluster can exist per cluster size.

I know this may not be clear, wish I could find that page about this.
If I find it I will post back.
Brian1
 
Old 04-03-2006, 07:31 PM   #6
eXeCuTioN
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i know what you are saying, however notice the partition size they report:

# df -B 1024

Filesystem 1K-blocks Used Available Use% Mounted on
/dev/hda6 17465100 12976864 3601048 79% /
/dev/hda1 48598016 42562816 6035200 88% /mnt/win_c

# fdisk -l

Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 7455 59882256 c W95 FAT32 (LBA)
/dev/hda2 7456 9729 18265905 5 Extended
/dev/hda5 7456 7520 522081 82 Linux swap / Solaris
/dev/hda6 7521 9729 17743761 83 Linux

df reports 48598016 k in size, not in space available and fdisk reports 59882256 K for the size
The problem is that the system thinks i only have 5.8 GB free, when it should be like 15 GB
 
  


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