可恨的manjaro不能用软碟通刻录，一气之下使用rufus刻录发现刻完后我7g优盘全部空间没了。。。，但是刻录成功能进入manjaro了，rufus为何如此霸道？把全部空间抢了，
另外说一下manjaro xfce真的爽，我的笔记本4g内存64位（果然4g还是32位的好）用win10开完机60%内存就没了，而manjaro 开机后用20%内存。
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其他软件会分区，会有剩余空间，rufus一点不剩。
啥，楼主沒装过机吧，引导盘是不能自己分区的。你就算用 16 GB 的刻 500 MB 的 FreeBSD 的 img 也是用完 16 GB 的，和用什么软件刻的沒关系，在 Linux 上用 dd 一样是这样。
问題是 manjaro (以及现在大多数 Linux distro)给的严格意义上并不是“标准” ISO ( ISO 9660 and its extensions or UDF )，而是叫 ISOHybird 的一用 isohybrid 程序在 ISO 文件里加额外能读取 ISO 內容的 bootloader 使得 ISO9660 or UDF 可以 dd 到 USB 上还能起动的格式 (如果你用的 distro 说这个 ISO 可以刻 DVD 也可以刻 USB，那就是 ISOHybird)。正常的 ISO 刻在 USB 上是不会起作用的。
Rufus 的 dd mode 和 dd 做的只能是把 ISOHybird 的內容如实复制到 USB (因为分区表也在 ISOHybird 里，沒用到的空间就只好留空了)上。和 dd image 一样这种方式会用完所有的容量。
Rufus 作为 ISO mode 刻的 USB，是把 USB format 成 FAT32 以能在 Windows 上把 ISO 里的文件解压到 USB 上。因为 Rufus 偷懶沒有分区功能，所以还是用完所有的容量。
理论上可以通过自己设置 USB 用的 bootloader，把复制到分区上的 installation iso mount 起來从而不必占用所有的容量， YUMI 是这样做的。
细节可以看。
opened 05:40AM - 24 Oct 16 UTC
closed 09:02AM - 25 Oct 16 UTC
## Checklist
- [x] I looked at https://github.com/pbatard/rufus/wiki/FAQ to see… if my question has already been answered.
- [x] I performed a search in the issue tracker for similar issues, using keywords relevant to my problem.
- [x] I clicked the `Log` button in Rufus and copy/pasted the log into the line that says `<FULL LOG>` below.
- [x] The log I am copying is the FULL log, starting with the line `Rufus version: x.y.z` - I have NOT removed any part of it.
Additionally (if applicable):
- [ ] I ran a bad blocks check, by clicking the "bad blocks" check box in Rufus, and confirmed that my USB is not defective
- [ ] I also tried one or more of the following:
- [ ] Using a different USB drive
- [ ] Plugging the USB into a different port
- [ ] Running Rufus on a different computer
- [ ] If using an ISO image, I clicked on the `#` button (at the bottom of the Rufus interface), to compute the MD5, SHA1 and SHA256 checksums, which are therefore present in the log I copied. I confirmed, by performing an internet search, that these values match the ones from the official image.
## Issue description
For an Arch Linux ISO, could you please explain the overall difference, when creating a USB Flash Drive, between Rufus' ISO Image mode and it's DD Image (disk image) mode? I am trying to understand what steps Rufus goes through, depending on which mode is selected, and how that affects the outcome.
thanks,
## Log
```
<FULL LOG>
```
boot, usb
https://www.syslinux.org/archives/2015-April/023381.html
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