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How does an operating system deal with different types of storage devices
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In Linux, it seems like the operating system knows what kind of storage device it is connected to. Eg. I see /dev/sda for SSD device and /dev/mmcblk for SD card.
I was wondering how the operating system is able to know what kind of device is plugged in? Also, what is the component is the OS that lets it interact with these devices.. is it the device driver? I read that the OS presents all devices as a file.. is it the device driver that is presenting a common interface to allow for this file abstraction?
filesystems block-device
asked 36 mins ago
N. ParikhN. Parikh
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In Linux, it seems like the operating system knows what kind of storage device it is connected to. Eg. I see /dev/sda for SSD device and /dev/mmcblk for SD card.
I was wondering how the operating system is able to know what kind of device is plugged in? Also, what is the component is the OS that lets it interact with these devices.. is it the device driver? I read that the OS presents all devices as a file.. is it the device driver that is presenting a common interface to allow for this file abstraction?
filesystems block-device
asked 36 mins ago
N. ParikhN. Parikh
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
In Linux, it seems like the operating system knows what kind of storage device it is connected to. Eg. I see /dev/sda for SSD device and /dev/mmcblk for SD card.
I was wondering how the operating system is able to know what kind of device is plugged in? Also, what is the component is the OS that lets it interact with these devices.. is it the device driver? I read that the OS presents all devices as a file.. is it the device driver that is presenting a common interface to allow for this file abstraction?
filesystems block-device
asked 36 mins ago
N. ParikhN. Parikh
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
In Linux, it seems like the operating system knows what kind of storage device it is connected to. Eg. I see /dev/sda for SSD device and /dev/mmcblk for SD card.
I was wondering how the operating system is able to know what kind of device is plugged in? Also, what is the component is the OS that lets it interact with these devices.. is it the device driver? I read that the OS presents all devices as a file.. is it the device driver that is presenting a common interface to allow for this file abstraction?
filesystems block-device
filesystems block-device
asked 36 mins ago
N. ParikhN. Parikh
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 36 mins ago
N. ParikhN. Parikh
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 36 mins ago
N. ParikhN. Parikh
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 36 mins ago
N. ParikhN. Parikh
1
asked 36 mins ago
N. ParikhN. Parikh
1
1
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
N. Parikh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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1 Answer
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You are mainly right. The OS needs to know the kind of storage device, because it has a completely different interface to an SD-Card (probably dedicated MMC pads on the CPU with the MMC protocol) than to the SSD (SATA?) or some external drive (USB mass storage?). You have completely different device drivers talking with a different protocol over a different hardware bus. Actually, there is no need to wonder how to know the kind of device, but to wonder how to make those completely different devices look all the same.
answered 5 mins ago
PhilipposPhilippos
6,42711951
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1 Answer
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1 Answer
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You are mainly right. The OS needs to know the kind of storage device, because it has a completely different interface to an SD-Card (probably dedicated MMC pads on the CPU with the MMC protocol) than to the SSD (SATA?) or some external drive (USB mass storage?). You have completely different device drivers talking with a different protocol over a different hardware bus. Actually, there is no need to wonder how to know the kind of device, but to wonder how to make those completely different devices look all the same.
answered 5 mins ago
PhilipposPhilippos
6,42711951
add a comment |
You are mainly right. The OS needs to know the kind of storage device, because it has a completely different interface to an SD-Card (probably dedicated MMC pads on the CPU with the MMC protocol) than to the SSD (SATA?) or some external drive (USB mass storage?). You have completely different device drivers talking with a different protocol over a different hardware bus. Actually, there is no need to wonder how to know the kind of device, but to wonder how to make those completely different devices look all the same.
answered 5 mins ago
PhilipposPhilippos
6,42711951
add a comment |
You are mainly right. The OS needs to know the kind of storage device, because it has a completely different interface to an SD-Card (probably dedicated MMC pads on the CPU with the MMC protocol) than to the SSD (SATA?) or some external drive (USB mass storage?). You have completely different device drivers talking with a different protocol over a different hardware bus. Actually, there is no need to wonder how to know the kind of device, but to wonder how to make those completely different devices look all the same.
answered 5 mins ago
PhilipposPhilippos
6,42711951
You are mainly right. The OS needs to know the kind of storage device, because it has a completely different interface to an SD-Card (probably dedicated MMC pads on the CPU with the MMC protocol) than to the SSD (SATA?) or some external drive (USB mass storage?). You have completely different device drivers talking with a different protocol over a different hardware bus. Actually, there is no need to wonder how to know the kind of device, but to wonder how to make those completely different devices look all the same.
answered 5 mins ago
PhilipposPhilippos
6,42711951
answered 5 mins ago
PhilipposPhilippos
6,42711951
answered 5 mins ago
PhilipposPhilippos
6,42711951
answered 5 mins ago
PhilipposPhilippos
6,42711951
6,42711951
add a comment |
add a comment |
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