Public bug reported: After resizing a FAT partition with any tool that uses libparted (parted, gparted) in Bionic, the file system is no longer recognizable by Microsoft Windows.
This fix has been applied in Cosmic+. The Debian bug report is: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=840710 The patch applied upstream is: http://git.savannah.gnu.org/cgit/parted.git/commit/?id=c0d394abac4d6d2ce35c98585b6ecb33aea48583 [Test case] * Use e.g. gparted to format a USB stick with MBR and a fat32 partition. * Verify that it's readable by Windows. * Check for correct output similar to this: # file -s /dev/sdf1 /dev/sdf1: DOS/MBR boot sector, code offset 0x58+2, OEM-ID "mkfs.fat", sectors/cluster 16, Media descriptor 0xf8, sectors/track 32, heads 64, hidden sectors 2048, sectors 30447616 (volumes > 32 MB), FAT (32 bit), sectors/FAT 14864, serial number 0x7a03dea6, label: "ASDF " * Resize it to e.g. 1 MB less. * Verify that it's no longer readable by Windows. * Check for wrong output similar to this: # file -s /dev/sdf1 /dev/sdf1: DOS/MBR boot sector [Regression Potential] Minimal, the patch is an upstream one and already tested in Debian, in the Gparted live CD, and in newer Ubuntu releases. ** Affects: parted (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1820090 Title: SRU: fix FAT recognition after resizing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/parted/+bug/1820090/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs