My SD card had a FAT32 partition and an EXT partition for Android. I don't need the EXT partition anymore, so I used GParted to delete it and increase the FAT32 to use the extra space, but Windows 7 doesn't see it anymore:
Ubuntu still sees it fine, though, including all the files:
Disks app "Repair filesystem" and GParted's "Check" did not fix it, either.
This is what parted shows:
(parted) print
Model: Generic- Multi-Card (scsi)
Disk /dev/sdb: 31.4GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 4194kB 31.4GB 31.4GB primary fat32 lba
dosfsck says:
fsck.fat 4.1 (2017-01-24)
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
65536 bytes per cluster
184 reserved sectors
First FAT starts at byte 94208 (sector 184)
2 FATs, 32 bit entries
1918976 bytes per FAT (= 3748 sectors)
Root directory start at cluster 6 (arbitrary size)
Data area starts at byte 3932160 (sector 7680)
479620 data clusters (31432376320 bytes)
32 sectors/track, 64 heads
8192 hidden sectors
61399040 sectors total
Reclaiming unconnected clusters.
Checking free cluster summary.
/dev/sdb1: 92610 files, 408037/479620 clusters
Also tried TestDisk, it says:
TestDisk 7.1-WIP, Data Recovery Utility, April 2018
Christophe GRENIER <[email protected]>
https://www.cgsecurity.org
Disk /dev/sde - 31 GB / 29 GiB - CHS 3822 255 63
Current partition structure:
Partition Start End Size in sectors
Invalid FAT boot sector
1 P FAT32 LBA 0 130 3 3822 107 61 61399040
1 P FAT32 LBA 0 130 3 3822 107 61 61399040
No partition is bootable
This drive doesn't need to be bootable. Quick Search finds the Linux partition I had deleted and resized over, but I guess that's not important:
TestDisk 7.1-WIP, Data Recovery Utility, April 2018
Christophe GRENIER <[email protected]>
https://www.cgsecurity.org
Disk /dev/sde - 31 GB / 29 GiB - CHS 3822 255 63
Partition Start End Size in sectors
>* Linux 3692 99 56 3822 107 61 2088960 [Link2SD]
This seems more important:
TestDisk 7.1-WIP, Data Recovery Utility, April 2018
Christophe GRENIER <[email protected]>
https://www.cgsecurity.org
Disk /dev/sde - 31 GB / 29 GiB - CHS 3822 255 63
Partition Start End Size in sectors
1 P FAT32 LBA 0 130 3 3822 107 61 61399040
Boot sector
Bad
Backup boot sector
Bad
Second sectors (cluster information) are not identical.
Third sectors (second part of boot code) are not identical.
A valid FAT Boot sector must be present in order to access
any data; even if the partition is not bootable.
I tried Rebuild Boot Sector in TestDisk but it didn't work:
TestDisk 7.1-WIP, Data Recovery Utility, April 2018
Christophe GRENIER <[email protected]>
https://www.cgsecurity.org
Disk /dev/sde - 31 GB / 29 GiB - CHS 3822 255 63
Partition Start End Size in sectors
1 P FAT32 LBA 0 130 3 3822 107 61 61399040
FAT : 32
cluster_size 128 128
reserved 184 184
total_sect 61399040 61399040
fat32_length 3748 3748
root_cluster 2 6
free_count uninitialised 71583
next_free uninitialised 2
Extrapolated boot sector and current boot sector are different.
Check that your cluster size is the correct for FAT32. See Microsoft documentation for more details. 64k may be too big for FAT32 partition, try using 16k. Otherwise, you can try exFAT which allow larger cluster sizes.