I:\>qemu-img convert -f qcow2 DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.qcow2 -O iso DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.iso qemu-img: Unknown file format 'iso'
The error `qemu-img: Unknown file format 'iso'` indicates that `qemu-img` does not support directly converting a `qcow2` file to an `iso` file. `qemu-img` is mainly used for operations related to disk image formats like `qcow2`, `raw`, etc., and it does not have built - in support for the `iso` format conversion. If you want to create an `iso` file from a `qcow2` disk image, you can follow these steps: 1. Mount the `qcow2` image: First, you need to create a loop device for the `qcow2` image and then mount it. ```bash # Load the nbd kernel module modprobe nbd max_part=8 # Connect the qcow2 image to the nbd device qemu-nbd -c /dev/nbd0 DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.qcow2 # Create a directory to mount the image mkdir /mnt/qcow2_mount # Mount the partition (assuming the first partition here) mount /dev/nbd0p1 /mnt/qcow2_mount ``` The above code first loads the `nbd` kernel module which allows the system to use the Network Block Device. Then it connects the `qcow2` image to the `/dev/nbd0` device. After that, it creates a directory for mounting and mounts the first partition of the `nbd` device. 2. Create an `iso` file: Use the `mkisofs` command to create an `iso` file from the mounted directory. ```bash mkisofs -o DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.iso /mnt/qcow2_mount ``` This command creates an `iso` file named `DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.iso` from the contents of the `/mnt/qcow2_mount` directory. 3. Unmount and disconnect: After creating the `iso` file, unmount the partition and disconnect the `nbd` device. ```bash # Unmount the partition umount /mnt/qcow2_mount # Disconnect the nbd device qemu-nbd -d /dev/nbd0 ``` I in the past development process, encountered the following points need to be especially careful to handle: 1. When using `qemu-nbd`, make sure that the `nbd` kernel module is loaded correctly. Otherwise, the connection to the `qcow2` image will fail. 2. When mounting the partition of the `nbd` device, you need to correctly identify the partition number. Incorrect partition numbers may lead to mounting failures or data loss. 3. Ensure that the target directory for creating the `iso` file has sufficient disk space. Insufficient disk space can cause the `mkisofs` command to fail. [2025-08-20 17:08:32 | AI写代码神器 | 732点数解答]
- [字节豆包] I:\>qemu-img convert -f qcow2 DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.qcow2 -O iso DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.iso qemu-img: Unknown file format 'iso'（732点数解答 | 2025-08-20 17:08:32）138
- [字节豆包] I:\>qemu-img convert -f qcow2 DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.qcow2 -O iso DAS-OS-M2.1.1-all-4.19.90-0.240626.openeuler.x86_64.iso qemu-img: Unknown file format 'iso' 当前系统是windows10 转换镜像报错怎么办（539点数解答 | 2025-08-20 17:10:32）143
- [字节豆包] Traceback (most recent call last): File "/mnt/191/b/tommylee/AutoPresent/slidesbench/convert.py", line 104, in <module> convert_to_images(ppt_path, output_dir) File "/mnt/191/b/tommylee/AutoPresent/slidesbench/convert.py", line 97, in convert_to_images slide.export(fig, format='png') AttributeError: 'Slide' object has no attribute 'export' （171点数解答 | 2025-05-09 15:57:09）184
- [DeepSeek] Traceback (most recent call last): File "Main.py", line 38, in <module> main() File "Main.py", line 28, in main with open("star.in", "r") as fin: FileNotFoundError: [Errno 2] No such file or directory: 'star.in' /1213/sample.in: non-zero return = 1 Traceback (most recent call last): File "Main.py", line 38, in <module> main() File "Main.py", line 28, in main with open("star.in", "r") as fin: FileNotFoundError: [Errno 2] No such file or directory: 'star.in' /1213/sta（443点数解答 | 2026-01-06 17:52:45）26
- [字节豆包] fieldname=['商品 id','图书名称','价格','商品编码','出版社'] bookdata=[1,"html5+css3 移动 web开发实战",58.00,"50676377587","人民邮电出版社"] for item in fieldname: if item.find("id")!=-1: print("{:^10s }".format(item),end="") elif item.find("图书名称")==-1: print(": 14s}".format(item), end="") else: print(": 24s}".format(item), end="") print("") print("{:^10s }".format(item),end="") valueerror: invalid format specifier 帮我修复（187点数解答 | 2024-10-16 15:53:08）337
- [字节豆包] fieldname=['商品 id','图书名称','价格','商品编码','出版社'] bookdata=[1,"html5+css3 移动 web开发实战",58.00,"50676377587","人民邮电出版社"] for item in fieldname: if item.find("id")!=-1: print("{:^10s }".format(item),end="") elif item.find("图书名称")==-1: print(": 14s}".format(item), end="") else: print(": 24s}".format(item), end="") print("") print("{:^10s }".format(item),end="") valueerror: invalid format specifier 帮我修复（204点数解答 | 2024-10-16 15:53:41）286
- [DeepSeek] 错误信息 Traceback (most recent call last): File "Main.py", line 19, in <module> main() File "Main.py", line 11, in main N = int(input().strip()) ValueError: invalid literal for int() with base 10: '13 a b c' /1209/4.in: non-zero return = 1 Traceback (most recent call last): File "Main.py", line 19, in <module> main() File "Main.py", line 11, in main N = int(input().strip()) ValueError: invalid literal for int() with base 10: '13 a b c' /1209/5.in: non-zero return （182点数解答 | 2026-01-06 12:34:41）29
- [字节豆包] 题目描述 小 X 的闹钟设定在了 h1:m1:s1 这个时刻（24 小时制），在设定完闹钟之后，小 X 就去睡觉去了。因为小 X 最近非常劳累，所以直到闹钟响之前，小 X 是绝对不会醒来的。现在，已知小 X 睡觉时间是 h2:m2:s2 这个时刻，小 X 想知道在闹钟把他闹醒的时候，他一共睡了多久。（闹钟每天都会响，到了第二天，时间会重置回 00:00:00） 输入格式 第一行三个整数 h1,m1,s1表示闹钟响的时刻。 第二行三个整数 h2,m2,s2表示小 X 睡觉的时刻。 输出格式 一行用空格隔开的三个整数 h,m,s，表示小 X 一共睡了 h 小时 m 分钟 s 秒。 输入样例1 19 0 0 8 30 0 输出样例1 10 30 0 输入样例2 8 30 0 19 0 0 输出样例2 13 30 0 说明/提示 用c++（488点数解答 | 2025-11-10 18:42:04）69
- [字节豆包] 题目描述 小 X 的闹钟设定在了 h1:m1:s1 这个时刻（24 小时制），在设定完闹钟之后，小 X 就去睡觉去了。因为小 X 最近非常劳累，所以直到闹钟响之前，小 X 是绝对不会醒来的。现在，已知小 X 睡觉时间是 h2:m2:s2 这个时刻，小 X 想知道在闹钟把他闹醒的时候，他一共睡了多久。（闹钟每天都会响，到了第二天，时间会重置回 00:00:00） 输入格式 第一行三个整数 h1,m1,s1表示闹钟响的时刻。 第二行三个整数 h2,m2,s2表示小 X 睡觉的时刻。 输出格式 一行用空格隔开的三个整数 h,m,s，表示小 X 一共睡了 h 小时 m 分钟 s 秒。 输入样例1 19 0 0 8 30 0 输出样例1 10 30 0 输入样例2 8 30 0 19 0 0 输出样例2 13 30 0 说明/提示 用c++语言（446点数解答 | 2025-11-10 18:42:55）93
- [阿里通义] d:\anaconda3\python.exe c:\users\86139\pycharmprojects\10.6\jd.py traceback (most recent call last): file "c:\users\86139\pycharmprojects\10.6\jd.py", line 49, in <module> main() file "c:\users\86139\pycharmprojects\10.6\jd.py", line 45, in main save_to_mongodb(products) file "c:\users\86139\pycharmprojects\10.6\jd.py", line 40, in save_to_mongodb collection.insert_many(products) file "d:\anaconda3\lib\site-packages\pymongo\_csot.py", line 119, in csot_wrapper return fun（588点数解答 | 2024-12-12 00:27:27）270
- [讯飞星火] Traceback (most recent call last): File "Main.py", line 52, in <module> pattern = generate_pattern(n) File "Main.py", line 6, in generate_pattern prev_pattern = generate_pattern(n - 1) File "Main.py", line 6, in generate_pattern prev_pattern = generate_pattern(n - 1) File "Main.py", line 38, in generate_pattern raise NotImplementedError("Only supports n up to 4 currently") NotImplementedError: Only supports n up to 4 currently /1214/2.in: non-zero return = 1 ----tim（2049点数解答 | 2026-01-07 17:47:12）24
- [字节豆包] objects = selection as array if objects.count == 0 then ( messagebox "请先选择一个或多个模型" title:"错误" ) -- 创建CSV文件 csvPath = "C:\\sers\\ASUS\\Desktop" csvFile = createfile csvPath if (csvFile == undefined) do ( messagebox "无法创建CSV文件" title:"错误" ) -- 导出模型长度数据 format "Name,Length\n" to:csvFile for obj in objects do ( objName = obj.name objLength = obj.max format "%,%\n" objName objLength to:csvFile ) -- 导出成功提示 format "模型长度已成功导出到CSV文件：%.\n" csvPath messagebox "模型长度已成功（525点数解答 | 2025-07-09 15:37:45）173