-storage: devicescan complete \ n ");
936
937/* shocould we unbind if no devices weredetected? */
938}
939
940 scsi_host_put (us_to_host (us ));
941 complete_and_exit ( threads_gone, 0 );
942}
Row 3, where does delay_use come from? In the same file, a static variable is defined at the beginning:
110 static unsigned int delay_use = 5;
111 module_param (delay_use, uint, S_IRUGO | S_IWUSR );
112 MOD
unsigned int delay_use = 5;
111 module_param (delay_use, uint, s_irugo | s_iwusr );
112 module_parm_desc (delay_use, "seconds todelay before using a new device ");
Set delay_use to 5, while module_param is a macro provided by Linux kernel 2.6, so that delay_use can be set when the module is loaded. (If this parameter is not set, the value 5 indicates that a new device is waiting for a delay of 5 seconds .) Why latency? When the inserted USB
production is successful. For example.Note: Because the USB flash drive system file is hidden, no files are found after the USB flash drive is opened. Please do not worry that production is not successful at this time
You can al
unsigned int delay_use = 5;
111 module_param (delay_use, uint, S_IRUGO | S_IWUSR );
112 MODULE_PARM_DESC (delay_use, "seconds todelay before using a new device ");
Set delay_use to 5, while module_param is a macro provided by Linux Kernel 2.6, so that delay_use can be set when the module is loaded. (If this parameter is not set, the value 5 indicates that a new device is waiting for a delay of 5 seconds .) Why latency? When the inserted USB
I used the fdisk command in Linux today and accidentally formatted the 512 USB flash drive. As a result, the USB flash drive is unavailable and becomes 0 bytes.
It cannot be used back
Get what we need from the two tables, and then the following code is expanded around the two pointers. (Unusual_dev and id) continue to read get_device_info (). Row 3: record unusual_dev in us. There is also such a member in us. After this is recorded...
Get what we need from the two tables, and then the following code is expanded around the two pointers. (Unusual_dev and id) continue to read get_device_info ().
Row
: 0x00000000
Device boot start end blocks ID system/Dev/sdc1 1 970 124115 B w95 FAT32Partition 1 has different physical/logical beginnings (non-Linux ?) :Phys = (0, 2, 0) logical = (0, 2, 27)
From the last few lines, we can see that the U disk is mounted under/dev/sdc1. Remember this mount point, which varies according to the Linux system.
Step 2: mount the
Get what we need from the two tables, and then the following code is expanded around the two pointers. (Unusual_dev and id) continue to read get_device_info ().
Row 3: Record unusual_dev in us. There is also such a member in us. In this way, it will be easy to use after recording. Because us runs through the whole story, it is very convenient to access its members and can be accessed at any time, however, the us_unusual_dev_list and storage_usb_ids t
Method one, System automatic repair method
Right-click the U disk, select the tool in the properties, and start checking for automatic repair and recovery to see if it can be repaired.
Method Two, tool software method
We can try to use the Usboot tool on the appearance of the U disk Display 0 bytes of the USB disk to repair, after the operation in HDD mode on the U disk forced format. Here, press it to d
Some friends asked why the optical drive will be stuck on the disc. In fact, it is not due to the poor quality of the disc or the aging of the optical drive laser head.
When the optical drive is reading some unclear areas of the optical drive, you need to repeat it to adjust the position and power of the optical
. To this end, the program must be modified. One idea is to open a thread and run the Recv. It doesn't matter if you stop it. The other idea is to change the sock to non-blocking. For details about the changes, see. red lines in the H file!
Int flags = fcntl (hotplug_sock, f_getfl, 0 );Fcntl (hotplug_sock, f_setfl, flags | o_nonblock );
When the kernel has no message, the Buf after Recv () is empty. After cross-compilation, the program runs well in ti
as a swap partition. Therefore, when applying for memory, it may need to exist on the disk, so you have to switch back. Isn't this enough to read and write the disk? Therefore, if we submit urb for reading and writing the hard disk, I/O operations cannot be performed again in this process. The purpose of this operation is to prevent nested endless loops.
So we can call 154 lines to go down, and the rest will be handled by the USB Core and
production failure.
Click "Yes (Y)" to continue, for example:
The following dialog box is displayed, indicating that the Boot Sector is successfully written. For example:
Step 3: continue the operation in the previous step. Click "write" to continue, which means to write the entire iso image package to our USB flash driv
. You must make such a choice. Otherwise, the installed system will be started through the USB flash drive by default. If you unplug the USB flash drive, it will not start. Experience with blood and tears ~~~~ Brother did not sele
Technorati label: Boot Disk
How to Create a USB flash drive and install the system with a USB flash drive (reprinted)
Many of my friends are using laptops without optical drives, but the problem also arises. When we need to reinst
Install ubuntu on a USB flash drive and start Linux from the USB flash drive.
If we install the Linux system directly on our hard disk, the GRUB of Linux will overwrite the boot guide of window. It is not convenient to carry. So
.
Another step that is easy to ignore is to select the disk where the boot program is located. There is a circular button on the left side of the selected disk name. we select it to indicate that the boot guide program is installed on our disk. You must make such a choice. Otherwise, the installed system will be started through the USB flash drive by default. if
asked a lot of people in the group and told me to reinstall the system. But I don't have to worry about it. Can I reload it without moving? No worries. The following is a solution. Please refer to the materials of many people! 1. Insert a USB flash drive to enable the system. (If the USB
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