Check readability of the media inserted in a physical device

Table of Contents Command description Command usage Example Operating system support

Command description

This operation will read the media inserted in the physical device, and measure how fast it can be read sequentially. It's not intended as a benchmark, but as a detector of damaged sectors, sectors that are losing readability, etc. When finished it will check how fast can the device seek, and report speed statistics.

Command usage

DiscImageChef media-scan -b [ibglog] -d [true/false] -i <device> -m [mhddlog] -v [true/false]

-b, --ibg-log=[ibglog] writes a log in the format used by ImgBurn
-d, --debug=[true/false] shows debug output (default false)
-i, --input=<dump> path to the physical device
-m, --mhdd-log=[mhddlog] writes a log in the format used by MHDD
-v, --verbose=[true/false] shows verbose output (default false)

Example

FreeBSD: DiscImageChef media-scan -i /dev/cd0
Linux: DiscImageChef media-scan -i /dev/sdb
Windows: DiscImageChef media-scan -i \\.\PhysicalDrive3

Operating system support

Device type	FreeBSD	macOS	Linux	Windows
SCSI Block device	Yes	No [1]	Yes	Yes
SCSI MultiMedia device	Yes	Not yet [2]	Yes	Yes
SCSI Streaming device	Yes	No [1]	Yes	Yes
Parallel ATA	No [3]	No [1]	Yes	Yes
Serial ATA	Yes	No [1]	Yes	Yes
USB	Partial [4]	Partial [5]	Yes	Yes
FireWire	Partial [6]	Partial [5]	Yes	Partial [6]
PCMCIA	Partial [7]	Partial [5]	Yes	Partial [7]
SecureDigital / MultiMediaCard	Not yet [8]	No [1]	Yes	Untested [9]

1. a b c d e macOS only allows talking with MultiMedia devices
2. ^ Support for MultiMedia devices in macOS will be added if users require it
3. ^ Not supported due to upstream bug
4. ^ USB descriptors are not retrieved
5. a b c Only MultiMedia devices can be supported and descriptors will not be retrieved
6. a b FireWire descriptors are not retrieved
7. a b PCMCIA CIS is not retrieved
8. ^ Support will come with FreeBSD 12-RELEASE
9. ^ Should work, untested due to not available hardware