On 5/5/25 10:15 PM, Samuel Sieb wrote:
On 5/5/25 8:18 PM, home user via users wrote:
# gpart /dev/sdb
Begin scan...
Possible partition(DOS FAT), size(14782mb), offset(3mb)
End scan.
Checking partitions...
Partition(DOS or Windows 95 with 32 bit FAT, LBA): primary
Ok.
Guessed primary partition table:
Primary partition(1)
type: 012(0x0C)(DOS or Windows 95 with 32 bit FAT, LBA)
size: 14782mb #s(30274944) s(8064-30283007)
chs: (3/60/1)-(1023/63/32)d (3/60/1)-(14786/39/32)r
# lsblk -f /dev/sdb
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
sdb
# fdisk -l /dev/sdb
Disk /dev/sdb: 14.44 GiB, 15504900096 bytes, 30283008 sectors
Disk model:
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5c3b37be
Device Boot Start End Sectors Size Id Type
/dev/sdb1 8064 30283007 30274944 14.4G c W95 FAT32 (LBA)
I'm getting an idea of what might be going on, which does mostly assume
it's a fake drive. Somehow gpart doing its scan triggers the partition
table to be available. fdisk can see it because it directly reads the
disk, but the OS doesn't know about the partition.
Don't remove the drive if it's still in.
Try "fdisk -l /dev/sdb".
If it doesn't show the partition table, then try "gpart /dev/sdb", then
try "fdisk -l /dev/sdb" again.
If it shows the partition table, then run "partprobe". If that's not
available, then install "parted".
Then try the mount.
I shut down for the night about a half an hour before you posted the above.
Note:
For several months, whenever I put something on this stick, I checked it
by running diff to compare what's on the stick with the hard drive
source of the copy. I don't know if that affects the suspicion that the
stick is a "fake drive".
Here's the output so far:
# gpart /dev/sdb
Begin scan...
Possible partition(DOS FAT), size(14782mb), offset(3mb)
End scan.
Checking partitions...
Partition(DOS or Windows 95 with 32 bit FAT, LBA): primary
Ok.
Guessed primary partition table:
Primary partition(1)
type: 012(0x0C)(DOS or Windows 95 with 32 bit FAT, LBA)
size: 14782mb #s(30274944) s(8064-30283007)
chs: (3/60/1)-(1023/63/32)d (3/60/1)-(14786/39/32)r
Primary partition(2)
type: 000(0x00)(unused)
size: 0mb #s(0) s(0-0)
chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r
Primary partition(3)
type: 000(0x00)(unused)
size: 0mb #s(0) s(0-0)
chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r
Primary partition(4)
type: 000(0x00)(unused)
size: 0mb #s(0) s(0-0)
chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r
# fdisk -l /dev/sdb
Disk /dev/sdb: 14.44 GiB, 15504900096 bytes, 30283008 sectors
Disk model:
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5c3b37be
Device Boot Start End Sectors Size Id Type
/dev/sdb1 8064 30283007 30274944 14.4G c W95 FAT32 (LBA)
#
Question:
What counts (or doesn't count) as a "partition table" in the fdisk output?
Questions:
I have "partprobe"; I've read the man page.
1. What options (if any) do you want?
2. What goes in the [devices...] field?
--
_______________________________________________
users mailing list -- users@lists.fedoraproject.org
To unsubscribe send an email to users-le...@lists.fedoraproject.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
Do not reply to spam, report it:
https://pagure.io/fedora-infrastructure/new_issue
