A disciplinary hold at college is just as the name implies. It's a hold that the school puts on a student's accounts or records to prevent them from taking certain steps or doing certain things. Whether it's to register for classes or to request and receive transcripts, or to even say receive a diploma depending at where they are in their say academic progression. The disciplinary hold is intended to encourage or to say force an accused student to participate in the conduct process.
In many instances, if not most, a school will put a disciplinary hold on a person has record. Whether it's appropriate or not to the circumstances will be case-specific, but that fundamentally is what a disciplinary hold is. If you're facing any kind of misconduct allocation at your college or university, it is a serious matter. It can affect you both in the short and longterm. Having an experienced attorney advisor will be your best ally to help you understand and navigate the process. They should be involved as early as possible in the case.