fat

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 25 days ago . Improve this question I am working on a raspberry pi and am having a tough time giving permissions to an external hard drive that I have mounted using the following tutorial: http://www.howtogeek.com/139433/how-to-turn-a-raspberry-pi-into-a-low-power-network-storage-device/ I have now

问题 I have been following the Operating System development tutorial on http://www.brokenthorn.com. Right now I'm trying to setup the BIOS parameter block with this code: jmp loader bpbName db "NubOS",0,0,0 bpbBytesPerSector: DW 512 bpbSectorsPerCluster: DB 1 bpbReservedSectors: DW 1 bpbNumberOfFATs: DB 2 bpbRootEntries: DW 224 bpbTotalSectors: DW 2880 bpbMedia: DB 0xF0 bpbSectorsPerFAT: DW 9 bpbSectorsPerTrack: DW 18 bpbHeadsPerCylinder: DW 2 bpbHiddenSectors: DD 0 bpbTotalSectorsBig: DD 0

问题 I have been following the Operating System development tutorial on http://www.brokenthorn.com. Right now I'm trying to setup the BIOS parameter block with this code: jmp loader bpbName db "NubOS",0,0,0 bpbBytesPerSector: DW 512 bpbSectorsPerCluster: DB 1 bpbReservedSectors: DW 1 bpbNumberOfFATs: DB 2 bpbRootEntries: DW 224 bpbTotalSectors: DW 2880 bpbMedia: DB 0xF0 bpbSectorsPerFAT: DW 9 bpbSectorsPerTrack: DW 18 bpbHeadsPerCylinder: DW 2 bpbHiddenSectors: DD 0 bpbTotalSectorsBig: DD 0

问题 How can I read HDD volume serial number using VB 6 but without using any ActiveX controls or third party add-ons? 回答1: Private Declare Function GetVolumeInformation _ Lib "kernel32" Alias "GetVolumeInformationA" _ (ByVal lpRootPathName As String, _ ByVal pVolumeNameBuffer As String, _ ByVal nVolumeNameSize As Long, _ lpVolumeSerialNumber As Long, _ lpMaximumComponentLength As Long, _ lpFileSystemFlags As Long, _ ByVal lpFileSystemNameBuffer As String, _ ByVal nFileSystemNameSize As Long) As

问题 Problem: Using shutil.copy() to copy a file to a FAT16 mounted filesystem in Linux fails (Python 2.7.x). The failure is shutil internal error and failing actually on shutil.chmod, which shutil.copy seems to execute. Shell chmod fails, too, as permissions are not supported in FAT. Questions: Is there any neat way around this? I know I have several options, for example: Use copyfile - not ideal as it requires full path, not just target directory, but doable Execute shell cp to copy files Write

问题 In C-language, what are the most appropriate format specifiers for data type BYTE, WORD and DWORD to be used with printf and scanf functions? I am having a hard time displaying BPB field's values over console. For example, if I am trying to display BPB_BytsPerSec using "%lu", I am getting unusual figures.. printf("Bytes per Sector: %lu", b->BPB_BytsPerSec); I am getting a value of "514", which I believe, is wrong interpretation.. Please suggest the way out. Thanks. (I am using gcc 5.1 via

问题 I am using the de.waldheinz.fs libraries in relation to the Android jobb tool, and I came across something that seems rather bizarre. In the file de.waldheinz.fs.fat.SuperFloppyFormatter.java:304 I find this: public static FatType fatTypeFromSize(long sizeInBytes) { final long sizeInMb = sizeInBytes / (1024 * 1024); if (sizeInMb < 4) return FatType.FAT12; else if (sizeInMb < 512) return FatType.FAT16; else return FatType.FAT32; } FatType here is the enum de.waldheinz.fs.fat.FatType , but the

问题 I'm writing a two stage bootloader for a FAT12 filesystem. The stage1 of the bootloader loads the stage2 from a floppy disk which is in FAT12 filesystem. Now I am having problem converting the cluster number (that I obtain from the FAT table) to a format containing the track, head and sector number. I was following the tutorial http://www.brokenthorn.com/Resources/OSDev6.html for making the bootloader. My confusion here is that in the tutorial the Cluster Number obtained from the FAT is

问题 Instead of storing references to next nodes in a table, why couldn't it be just stored like a conventional linked list, that is, with a next pointer? 回答1: This is due to alignment. FAT (and just about any other file system) stores file data in one or more whole sectors of the underlying storage. Because the underlying storage can only read and write whole sectors such allocation allows efficient access to the contents of a file. Issues with interleaving When a program wants to store something

问题 I know FAT32, as well as FAT16/12 neither support symbolic links nor hard-links . However I came up with this idea: The FAT specification describes that every file is associated with a directory-entry. In my understanding, one could say that a file-entry in a directory somehow or other points to the file's content. So, how can I define two directory-entries which point to the same file-content? Or, what could prevent me from doing so? Use case: I have a USB mass storage device for my car